Celestial Atlas
(IC 1900 - 1949) ←IC Objects: IC 1950 - 1999 Link for sharing this page on Facebook→ (IC 2000 - 2049)
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1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966,
1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983,
1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999

Page last updated Aug 5, 2021
Checking galaxy type catalogs
Checked updated Corwin positions (need to review 1987)
Note: Steinicke's #s for DS differ from Dreyer's; need to check Southern Nebulae
WORKING 1977: Update formatting for main entry, add/check Dreyer entries
NEXT: update rest of formatting, all designations as needed

IC 1950 (= PGC 13053)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 14.5 spiral galaxy (type Sbc?) in Horologium (RA 03 31 04.5, Dec -50 26 00)
Historical Identification: Per Dreyer, IC 1950 (DeLisle Stewart #209, 1860 RA 03 26 55, NPD 140 54) is "extended north-preceding south-following (northwest-southeast)."
Physical Information: Based on a recessional velocity of 11420 km/sec, a straightfoward calculation indicates that IC 1950 is about 530 million light-years away. However, for objects at such distances we should take into account the Universal expansion during the time it took their light to reach us. Doing that shows that the galaxy was about 510 million light-years away at the time the light by which we see it was emitted, about 520 million years ago (the difference between the two numbers being due to the expansion of the intervening space during the light-travel time). Given that and its apparent size of 1.6 by 0.4 arcmin, it is about 240 thousand light-years across.
DSS image of spiral galaxy IC 1950
Above, a 2.4 arcmin wide DSS image of IC 1950
Below, a 12 arcmin wide DSS image centered on the galaxy
DSS image of region near spiral galaxy IC 1950

IC 1951 (= PGC 13048)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 16.3 spiral galaxy (type Sbc??) in Horologium (RA 03 30 56.3, Dec -53 07 34)
Historical Identification: Per Dreyer, IC 1951 (DeLisle Stewart #210, 1860 RA 03 27 12, NPD 143 37) is "extended south-preceding north-following (southwest-northeast)."
Physical Information: Apparent size 0.5 by 0.2 arcmin?

IC 1952 (= PGC 13171)
Discovered (1899) by
DeLisle Stewart
A magnitude 12.7 spiral galaxy (type (R')SB(s)cd sp) in Eridanus (RA 03 33 26.7, Dec -23 42 46)
Historical Identification: Per Dreyer, IC 1952 (DeLisle Stewart #212, 1860 RA 03 27 22, NPD 114 11) is "considerably faint, small, very much extended 140°, star 1 arcmin south-following (to the southeast)."
Physical Information: Apparent size 2.6 by 0.6 arcmin?
Note About Classification: The type is taken from the Spitzer Survey of Stellar Structure in Galaxies.

IC 1953 (= PGC 13184)
Discovered (1899) by
DeLisle Stewart
A magnitude 11.7 spiral galaxy (type SB(rs)c) in Eridanus (RA 03 33 41.8, Dec -21 28 43)
Historical Identification: Per Dreyer, IC 1953 (DeLisle Stewart #213, 1860 RA 03 27 32, NPD 111 57) is "very faint, considerably large, spiral or annular."
Physical Information: Apparent size 2.9 by 2.1 arcmin?
Note About Classification: The type is taken from the Spitzer Survey of Stellar Structure in Galaxies.

Corwin lists a possible companion (PGC 13194) at RA 03 33 51.3, Dec -21 27 20
Historical Identification:
Physical Information:

IC 1954
(= PGC 13090 = ESO 200-036)

Discovered (1898) by
Robert Innes
Discovered (Oct 14, 1898) by DeLisle Stewart
A magnitude 11.6 spiral galaxy (type SAB?(rs)bc) in Horologium (RA 03 31 31.4, Dec -51 54 18)
Historical Identification: Per Dreyer, IC 1954 (Innes (#1), DeLisle Stewart (#210"a"), 1860 RA 03 27 44, NPD 142 23) is "faint, pretty large, round, spiral." The position precesses to RA 03 31 43.4, Dec -51 54 29, less than 2 arcmin due east of the galaxy listed above, the description fits and there is nothing else nearby, so the identification is certain.
Physical Information: : Based on a recessional velocity relative to the Cosmic Microwave Background radiation of 1000 km/sec (and H0 = 70 km/sec/Mpc), IC 1954 is about 45 to 50 million light-years away, in good agreement with redshift-independent distance estimates of about 40 to 60 million light-years. Given that and its apparent size of about 3.8 by 2.05 arcmin (from the images below), the galaxy is about 50 thousand light-years across.
Note About Classification: The Spitzer Survey of Stellar Structure in Galaxies classification is SB(rs)cd. Visual classifications run from SBb to SB(s)bc. The type shown in the description line is based on those three classifications and the images below, which show a bar-like structure in the nucleus, but one that looks more like a linear structure than a normal bar in the Carnegie-Irvine image, and a pretty weak bar in the HST images, which is why I placed a question mark after the "B" and added the "A".
DSS image of region near spiral galaxy IC 1954
Above, a 12 arcmin wide DSS image centered on IC 1954
Below, a 4.2 by 3.4 arcmin wide image of the galaxy (Image Credit & © Carnegie-Irvine Galaxy Survey; used by permission)
Carnegie-Irvine Galaxy Survey image of spiral galaxy IC 1954
Below, a 2.6 by 2.0 arcmin wide image of the galaxy
HST image of spiral galaxy IC 1954
Below, the image above rotated (with North on the right) to allow for more detail (Image Credit as above)
HST image of spiral galaxy IC 1954

IC 1955 (= PGC 13086)
Discovered (Dec 8, 1899) by
DeLisle Stewart
A magnitude 15.0 spiral galaxy (type Sbc??) in Reticulum (RA 03 31 24.6, Dec -57 14 31)
Historical Identification: Per Dreyer, IC 1955 (DeLisle Stewart #211, 1860 RA 03 28 04, NPD 147 42) is "extremely faint, very small, round."
Physical Information: Apparent size 0.7 by 0.6 arcmin?

IC 1956 (= PGC 13279)
Discovered (Dec 22, 1897) by
Stephane Javelle
A magnitude 14.6 spiral galaxy (type SBbc??) in Taurus (RA 03 35 33.2, Dec +05 04 01)
Historical Identification: Per Dreyer, IC 1956 (Javelle #979, 1860 RA 03 28 09, NPD 85 24.1) is "faint, small, extended 200°, 2 very faint nuclei."
Physical Information: Apparent size 1.6 by 0.3 arcmin?

IC 1957 (= PGC 13120)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 15.7 spiral galaxy (type Sbc??) in Horologium (RA 03 32 13.5, Dec -52 27 24)
Historical Identification: Per Dreyer, IC 1957 (DeLisle Stewart #214, 1860 RA 03 28 17, NPD 142 55) is "extended south-preceding north-following (southwest-northeast)."
Physical Information: Apparent size 0.9 by 0.2 arcmin?

IC 1958 (= PGC 13144)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 15.2 spiral galaxy (type S??) in Horologium (RA 03 32 46.4, Dec -51 26 30)
Historical Identification: Per Dreyer, IC 1958 (DeLisle Stewart #215, 1860 RA 03 28 45, NPD 141 55) is "stellar."
Physical Information: Apparent size 0.4 by 0.3 arcmin?

IC 1959 (= PGC 13163)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 12.8 spiral galaxy (type Sdm: sp) in Horologium (RA 03 33 12.5, Dec -50 24 52)
Historical Identification: Per Dreyer, IC 1959 (DeLisle Stewart #216, 1860 RA 03 29 01, NPD 140 53) is "extended north-preceding south-following (northwest-southeast)."
Physical Information: Apparent size 2.9 by 0.7 arcmin?
Note About Classification: The type is taken from the Spitzer Survey of Stellar Structure in Galaxies.

IC 1960 (= PGC 13135)
Discovered (Dec 8, 1899) by
DeLisle Stewart
A magnitude 14.4 spiral galaxy (type Sab??) in Reticulum (RA 03 32 33.0, Dec -57 12 24)
Historical Identification: Per Dreyer, IC 1960 (DeLisle Stewart #217, 1860 RA 03 29 16, NPD 147 40) is "extremely faint, very small, round."
Physical Information: Apparent size 1.1 by 0.3 arcmin?

IC 1961 (= PGC 13175)
Discovered (Dec 6, 1899) by
DeLisle Stewart
A magnitude 14.8 spiral galaxy (type Sc??) in Horologium (RA 03 33 33.3, Dec -48 57 03)
Historical Identification: Per Dreyer, IC 1961 (DeLisle Stewart #218, 1860 RA 03 29 17, NPD 139 25) is "extremely faint, very small, considerably extended 20°."
Physical Information: Apparent size 0.6 by 0.4 arcmin?

IC 1962 (= PGC 13283)
Discovered (1899) by
DeLisle Stewart
A magnitude 14.1 spiral galaxy (type SB(s)m sp) in Eridanus (RA 03 35 37.4, Dec -21 17 32)
Historical Identification: Per Dreyer, IC 1962 (DeLisle Stewart #221, 1860 RA 03 29 26, NPD 111 46) is "extremely faint, small, much extended 175°, gradually brighter middle."
Physical Information: Apparent size 2.7 by 0.5 arcmin?
Note About Classification: The type is taken from the Spitzer Survey of Stellar Structure in Galaxies.

IC 1963 (=
IC 335 = PGC 13277)
Discovered (Oct 15, 1887) by Lewis Swift (and later listed as IC 335)
Discovered (Sep 7, 1897) by Lewis Swift (and later listed as IC 1963)
A magnitude 12.1 lenticular galaxy (type S0??) in Fornax (RA 03 35 31.1, Dec -34 26 49)
Historical Identification: Per Dreyer, Swift list XI (#56), 1860 RA 03 29 27, NPD 124 55.0) is "pretty bright, small, extremely extended 90°."
 Per Corwin, the (relatively poor) position and (excellent) description for IC 1963 are essentially identical to the ones Swift made ten years earlier for IC 335, so the equality of the two listings should have been obvious to Swift and Dreyer; but they missed the identity, hence the duplication.
Physical Information: Given the duplicate entry, see IC 335 for anything else.

IC 1964 (= PGC 13173)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 15.8 spiral galaxy (type S??) in Reticulum (RA 03 33 30.1, Dec -53 10 23)
Historical Identification: Per Dreyer, IC 1964 (DeLisle Stewart #220, 1860 RA 03 29 49, NPD 143 38) is "extended preceding-following (west-east)."
Physical Information: Apparent size 0.5 by 0.3 arcmin?

IC 1965 (= PGC 13162)
Discovered (Dec 8, 1899) by
DeLisle Stewart
A magnitude 15.1 spiral galaxy (type SBc??) in Reticulum (RA 03 33 11.1, Dec -56 33 14)
Historical Identification: Per Dreyer, IC 1965 (DeLisle Stewart #219, 1860 RA 03 29 51, NPD 147 01) is "extremely faint, very small, round, considerably brighter middle."
Physical Information: Apparent size 1.0 by 0.8 arcmin?

IC 1966 (= PGC 13206)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 14.8 spiral galaxy (type S??) in Horologium (RA 03 34 03.4, Dec -51 19 20)
Historical Identification: Per Dreyer, IC 1966 (DeLisle Stewart #222, 1860 RA 03 30 03, NPD 141 47) is "stellar."
Physical Information: Apparent size 0.6 by 0.3 arcmin?

IC 1967 (= PGC 13382)
Discovered (Jan 29, 1894) by
Stephane Javelle
A magnitude 15.0 spiral galaxy (type S??) in Taurus (RA 03 37 47.7, Dec +03 16 16)
Historical Identification: Per Dreyer, IC 1967 (Javelle #980, 1860 RA 03 30 29, NPD 87 11.6) is "very faint, small, round, 13th magnitude star near."
Physical Information: Apparent size 0.9 by 0.4 arcmin?

IC 1968 (= PGC 13236)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 15.4 spiral galaxy (type S??) in Horologium (RA 03 34 37.8, Dec -50 39 05)
Historical Identification: Per Dreyer, IC 1968 (DeLisle Stewart #223, 1860 RA 03 30 38, NPD 141 06) is "stellar."
Physical Information: Apparent size 0.5 by 0.3 arcmin?

IC 1969 (= PGC 13303)
Discovered (Dec 6, 1899) by
DeLisle Stewart
A magnitude 14.8 spiral galaxy (type Sab??) in Horologium (RA 03 36 13.9, Dec -45 10 46)
Historical Identification: Per Dreyer, IC 1969 (DeLisle Stewart #224, 1860 RA 03 31 35, NPD 135 39) is "extremely faint, very small, considerably extended 50°, considerably brighter middle."
Physical Information: Apparent size 1.3 by 0.2 arcmin?

IC 1970 (= PGC 13322)
Discovered (Nov 17, 1897) by
Lewis Swift
Discovered (date?) by DeLisle Stewart
A magnitude 12.0 spiral galaxy (type Scd sp / E(d)6) in Horologium (RA 03 36 31.4, Dec -43 57 24)
Historical Identification: Per Dreyer, IC 1970 (Swift list XI (#57), DeLisle Stewart (#??), 1860 RA 03 31 45, NPD 134 25) is "extremely faint, very small, extremely extended 75°."
Physical Information: Apparent size 3.1 by 0.6 arcmin?
Note About Classification: The type is taken from the Spitzer Survey of Stellar Structure in Galaxies.

IC 1971 (= PGC 13295)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 15.1 spiral galaxy (type S??) in Horologium (RA 03 35 57.4, Dec -52 39 04)
Historical Identification: Per Dreyer, IC 1971 (DeLisle Stewart #225, 1860 RA 03 32 06, NPD 143 06) is "extended preceding-following (west-east)."
Physical Information: Apparent size 0.7 by 0.3 arcmin?

IC 1972 (= PGC 13310)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 15 spiral galaxy (type Sc?) in Horologium (RA 03 36 21.4, Dec -51 58 04)
Historical Identification: Per Dreyer, IC 1972 (DeLisle Stewart #226, 1860 RA 03 32 29, NPD 142 26) is "extended."
Physical Information: Apparent size 0.7 by 0.2 arcmin.
DSS image of spiral galaxy IC 1972
Above, a 1.2 arcmin wide DSS image of IC 1972
Below, a 12 arcmin wide DSS image centered on the galaxy, also showing IC 1973
DSS image of region near spiral galaxy IC 1972, also showing IC 1973

IC 1973 (= PGC 13309)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 15.9 spiral galaxy (type Sc?) in Horologium (RA 03 36 21.0, Dec -51 59 39)
Historical Identification: Per Dreyer, IC 1973 (DeLisle Stewart #227, 1860 RA 03 32 29, NPD 142 27) is "extended."
Physical Information: Apparent size 0.4 by 0.2 arcmin. Incorrectly listed as a pair of galaxies in NED and LEDA; if anything, the correct "pair" is IC 1972 & IC 1973.
DSS image of spiral galaxy IC 1973
Above, a 1.2 arcmin wide DSS image of IC 1973; for a wider view see IC 1972

IC 1974 (= PGC 13325)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 15.1 spiral galaxy (type S??) in Horologium (RA 03 36 42.3, Dec -49 33 01)
Historical Identification: Per Dreyer, IC 1974 (DeLisle Stewart #228, 1860 RA 03 32 30, NPD 140 02) is "extended north-preceding south-following (northwest-southeast)."
Physical Information: Apparent size 0.8 by 0.3 arcmin?

IC 1975 (= PGC 3080474)
Discovered (Jan 19, 1900) by
Herbert Howe
A magnitude 14.8 spiral galaxy (type Sab? pec?) in Eridanus (RA 03 39 03.6, Dec -15 30 00)
Historical Identification: Per Dreyer, IC 1975 (Howe list III (#13), 1860 RA 03 32 37, NPD 105 57.6) is "extremely faint, very small, very difficult, near (NGC) 1405."
Physical Information: Apparent size 0.45 by 0.35 arcmin.
DSS image of spiral galaxy IC 1975
Above, a 1.2 arcmin wide DSS image of IC 1975
Below, a 12 arcmin wide DSS image centered on the galaxy
DSS image of region near spiral galaxy IC 1975

IC 1976 (= PGC 13355)
Discovered (Dec 6, 1899) by
DeLisle Stewart
A magnitude 15.0 spiral galaxy (type S??) in Horologium (RA 03 37 08.8, Dec -47 26 14)
Historical Identification: Per Dreyer, IC 1976 (DeLisle Stewart #229, 1860 RA 03 32 45, NPD 137 54) is "extremely faint, extremely small, round."
Physical Information: Apparent size 0.8 by 0.5 arcmin?

IC 1977 (= PGC 13536)
Discovered (Dec 27, 1897) by
Stephane Javelle
A magnitude 13.5 spiral galaxy (type SBb??) in Taurus (RA 03 40 45.1, Dec +17 44 28)
Historical Identification: Per Dreyer, IC 1977 (Javelle #981, 1860 RA 03 32 46, NPD 72 42.2) is "faint, small, round, diffuse, 13.5 magnitude star near."
Physical Information: Apparent size 1.4 by 0.8 arcmin?

IC 1978 (= PGC 13350)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 14.9 spiral galaxy (type Sab??) in Horologium (RA 03 37 05.6, Dec -50 09 03)
Historical Identification: Per Dreyer, IC 1978 (DeLisle Stewart #230, 1860 RA 03 32 56, NPD 140 37) is "extended north-south."
Physical Information: Apparent size 1.1 by 0.2 arcmin?

IC 1979
Recorded (Dec 8, 1899) by
DeLisle Stewart
A pair of stars in Reticulum (RA 03 36 46.2, Dec -57 56 42)
Corwin lists n* RA 03 36 46.4, Dec -57 56 34
and s* RA 03 36 46.0, Dec -57 56 49
Historical Identification: Per Dreyer, IC 1979 (DeLisle Stewart #231, 1860 RA 03 33 37, NPD 148 24) is "most extremely faint, extremely small, very much extended 20°."
Physical Information:

IC 1980 (= PGC 13345)
Discovered (Dec 8, 1899) by
DeLisle Stewart
A magnitude 14.2 spiral galaxy (type Sb??) in Reticulum (RA 03 36 59.0, Dec -57 58 26)
Historical Identification: Per Dreyer, IC 1980 (DeLisle Stewart #232, 1860 RA 03 33 49, NPD 148 26) is "extremely faint, considerably small, very much extended 25°."
Physical Information: Apparent size 1.1 by 0.5 arcmin?

IC 1981 (=
NGC 1412 = PGC 13520)
Discovered (Nov 20, 1835) by John Herschel (and later listed as NGC 1412)
Discovered (Dec 26, 1897) by Lewis Swift (and later listed as IC 1981)
A magnitude 12.5 lenticular galaxy (type SB0??) in Fornax (RA 03 40 29.4, Dec -26 51 44)
Historical Identification: Per Dreyer, IC 1981 (Swift list XI (#58), 1860 RA 03 33 59, NPD 117 19.1) is "extremely faint, extremely small, a little extended, star close north-following (to the northeast)."
Physical Information: Given the duplicate entry, see NGC 1412 for anything else.

IC 1982 (= PGC 13378)
Discovered (Dec 8, 1899) by
DeLisle Stewart
A magnitude 14.8 spiral galaxy (type Sab??) in Reticulum (RA 03 37 42.4, Dec -57 46 34)
Historical Identification: Per Dreyer, IC 1982 (DeLisle Stewart #233, 1860 RA 03 34 31, NPD 148 14) is "considerably faint, extremely small, round."
Physical Information: Apparent size 0.5 by 0.5 arcmin?

IC 1983 (=
NGC 1415 = PGC 13544)
Discovered (Dec 9, 1784) by William Herschel (and later listed as NGC 1415)
Discovered (Oct 8, 1896) by Lewis Swift (and later listed as IC 1983)
A magnitude 11.9 lenticular galaxy (type S0/a??) in Eridanus (RA 03 40 56.9, Dec -22 33 52)
Historical Identification: Per Dreyer, IC 1983 (Swift list XI (#59), 1860 RA 03 35 01, NPD 113 03.5) is "very faint, pretty small, round."
Physical Information: Given the duplicate entry, see NGC 1415 for anything else.

IC 1984 (= PGC 13487)
Discovered (Dec 6, 1899) by
DeLisle Stewart
A magnitude 15.2 spiral galaxy (type Sbc??) in Horologium (RA 03 39 50.3, Dec -47 04 34)
Historical Identification: Per Dreyer, IC 1984 (DeLisle Stewart #234, 1860 RA 03 35 26, NPD 137 32) is "most extremely faint, extremely small, much extended 150°."
Physical Information: Apparent size 0.7 by 0.2 arcmin?

IC 1985 (= OCL 409 =
IC 348)
Discovered (Dec 1, 1866) by Truman Safford (and later listed as IC 348)
Discovered (Dec 6, 1893) by Edward Barnard (and later listed as IC 1985)
A magnitude 7.3 open cluster (type IV2pn) and nebula in Perseus (RA 03 44 34.2, Dec +32 09 46)
Historical Identification: Per Dreyer, IC 1985 (Barnard, 1860 RA 03 35 48, NPD 58 17.0) is "an 8th magnitude star in faint, extremely large nebulosity."
Physical Information: Given the duplicate entry, see IC 348 for anything else.

IC 1986 (= PGC 13521)
Discovered (Dec 6, 1899) by
DeLisle Stewart
A magnitude 14.3 irregular galaxy (dIm) in Horologium (RA 03 40 35.3, Dec -45 21 22)
Historical Identification: Per Dreyer, IC 1986 (DeLisle Stewart #235, 1860 RA 03 36 00, NPD 135 49) is "extremely faint, extremely small, considerably extended 135°."
Physical Information: Based on a recessional velocity of 1550 km/sec, IC 1986 is about 70 million light-years away, in "reasonable" agreement with a redshift-independent distance estimate of 58 million light-years. Given that and its apparent size of 1.5 by 1.05 arcmin, it is about 30 thousand light-years across. Its appearance suggests that instead of a single irregular object, it may be the result of a collision between two galaxies; but far better images would be needed to tell.
Note About Classification: The type is taken from the Spitzer Survey of Stellar Structure in Galaxies.
DSS image of irregular galaxy IC 1986
Above, a 2.4 arcmin wide DSS image of IC 1986
Below, a 12 arcmin wide DSS image centered on the galaxy
DSS image of region near irregular galaxy IC 1986

IC 1987
(= PGC 13502 = ESO 156-004)
(plus some of its apparent companions?)

Discovered (Dec 8, 1899) by
DeLisle Stewart
A magnitude 14.9 spiral galaxy (type Sa? pec?) in Reticulum (RA 03 40 11.5, Dec -55 03 33)
and?? (to w) A compact galaxy (type C??) at RA 03 40 09.6, Dec -55 03 18
(to e) J0340122-550322 = A star at RA 03 40 12.0, Dec -55 03 22
(to ne) J0340120-550312 = A compact galaxy (type C??) at RA 03 40 11.9, Dec -55 03 11
Historical Identification: Per Dreyer, IC 1987 (DeLisle Stewart #236, 1860 RA 03 36 48, NPD 145 31) is "extremely faint, very small, round." The postiion precesses to RA 03 40 18.0, Dec -55 03 56, about 1 arcmin east-southeast of the galaxy listed above, the description is reasonable and there is nothing else nearby, so the identification is certain. The only question is which, if any, of the stars and other galaxies near PGC 13502 should be considered to be part of IC 1987.
Analysis Of The "Companions": The two fainter objects to the north and northwest of PGC 13502 are galaxies, but the brightest "companion" (the one "attached" to the northern rim of PGC 13502) is a star. Data for three objects are either absent or contradictory, depending on the reference consulted. The two galaxies are probably too faint to have affected Stewart's description, and are almost certainly not part of IC 1987. The star attached to the galaxy might have been visible, but if Stewart had noticed it he would probably have described his #236 as "extended north-south", or "faint star attached on north", and since he did neither, IC 1987 is probably only PGC 13502. Physical Information: Apparent size about 1.6 by 0.8 arcmin. Given the lack of information about the three "companions", whether they have anything to do with IC 1987 would be useless speculation without further study of the "system", and any attempt to add anything about them either here or in another entry would be pointless.
DSS image of spiral galaxy IC 1987 and its apparent companions
Above, a 2.4 arcmin wide DSS image of IC 1987
Below, a 12 arcmin wide DSS image centered on the galaxy
DSS image of region near spiral galaxy IC 1987

IC 1988
Recorded (Oct 14, 1897) by
Lewis Swift
A lost or nonexistent object in Eridanus (RA 03 42 45.0, Dec -39 53 13)
Corwin lists a possible duplication of NGC 1425 at RA 03 42 11.5, Dec -29 53 36
Historical Identification: Per Dreyer, IC 1988 (Swift list XI (#61), 1860 RA 03 37 44, NPD 130 20.0) is "extremely faint, pretty large, round, 2 stars near following (to the east), 2 stars north-preceding (to the northwest)."
Physical Information:

IC 1989 (= PGC 13581)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 13.5 lenticular galaxy (type E/S0??) in Horologium (RA 03 41 54.7, Dec -50 57 28)
Historical Identification: Per Dreyer, IC 1989 (DeLisle Stewart #237, 1860 RA 03 37 58, NPD 141 25) is "stellar."
Physical Information: Apparent size 1.1 by 0.7 arcmin?

IC 1990
Discovered (May, 1896) by
Vsevolod Stratonov
An emission nebula in Taurus (RA 03 47 13.8, Dec +24 20 02)
Corwin's position is RA 03 47 30, Dec +24 20.0
Historical Identification: Per Dreyer, IC 1990 (Stratonoff ([A.N.] 3366), 1860 RA 03 39 12, NPD 65 49) is "very large, much extended preceding-following (west-east), 15 arcmin large (apparent size)."
Physical Information:

IC 1991 (= PGC 13734)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 15.4 spiral galaxy (type S??) in Horologium (RA 03 44 46.8, Dec -51 31 24)
Historical Identification: Per Dreyer, IC 1991 (DeLisle Stewart #238, 1860 RA 03 40 47, NPD 141 59) is "stellar, extended south-preceding north-following (southwest-northeast)."
Physical Information: Apparent size 0.7 by 0.3 arcmin?

Corwin lists a possible companion (PGC 129471) at RA 03 44 48.5, Dec -51 33 09
Historical Identification:
Physical Information:

IC 1992
Recorded (Oct 14, 1898) by
DeLisle Stewart
A lost or nonexistent object in Horologium (RA 03 45 08.0, Dec -51 00 18)
Corwin lists a possible candidate at RA 03 45 09.7, Dec -50 59 56
Historical Identification: Per Dreyer, IC 1992 (DeLisle Stewart #239, 1860 RA 03 41 10, NPD 141 27) is "stellar."
Physical Information:

IC 1993 (= PGC 13840)
Discovered (Nov 19, 1897) by
Lewis Swift
A magnitude 11.7 spiral galaxy (type (R')SA(s)ab) in Fornax (RA 03 47 04.8, Dec -33 42 36)
Historical Identification: Per Dreyer, IC 1993 (Swift list XI (#62), 1860 RA 03 41 27, NPD 124 09.5) is "extremely faint, large, considerably extended, 7.5 magnitude star attached, very difficult."
Physical Information: Apparent size 2.5 by 2.2 arcmin? Listed as a member (FCC 315) of the Fornax Cluster in Ferguson's Catalog.
Usage By The deVaucouleurs Atlas: IC 1993 is used by The deVaucouleurs Atlas of Galaxies as an example of type (R')SA(s)b. However, in the Spitzer Survey of Stellar Structure in Galaxies (a 2015 extension of the de Vaucouleurs classification system) it is listed as type (R')SA(s)ab, whence the type shown in the description line.

IC 1994 (= PGC 13795)
Discovered (Oct 14, 1898) by
DeLisle Stewart
A magnitude 15.2 spiral galaxy (type S??) in Horologium (RA 03 45 55.0, Dec -51 38 37)
Historical Identification: Per Dreyer, IC 1994 (DeLisle Stewart #242, 1860 RA 03 41 54, NPD 142 06) is "extended north-south."
Physical Information: Apparent size 0.7 by 0.2 arcmin?

IC 1995
Photographed (1896) by
Solon Bailey
Discovered (November, 1899) by Edward Barnard
A reflection nebula in Taurus (RA 03 50 18.9, Dec +25 34 46)
Historical Identification: Per Dreyer, IC 1995 (Barnard, (Bailey), 1860 RA 03 41 54, NPD 64 50.7) is "a 6th magnitude star in extremely faint, most extremely large nebula (M.N., lx. p. 260)."
Discovery Notes: Although Steinicke lists Bailey as the original observer, neither Barnard nor Dreyer were aware of that, because Bailey's catalog wasn't published until 1908 (either just before or after the IC2 was published); but since Bailey had photographed this region before Barnard, his observation is given credit above, and inserted in the IC entry in parentheses. However, Bailey's tabular entry is for the Pleiades, described as "a remarkable cluster, well known cluster of bright stars, not given in the NGC." In a note at the end of the table he discusses the fact that although there are thousands of stars in the region, there are no more there than in any similar neighboring area, so the Pleiades itself "consists of a few comparatively bright stars." The star noted in the entry for IC 1995 is magnitude 5.2 HD 23985, located a little over a degree and a half to the northeast of the Pleiades, and the 14 by 17 inch plates used by Bailey showed a region nearly 6 by 7 degrees wide, so IC 1995 was certainly on the plate taken by Bailey, and as a 5th magnitude star, Bailey must have noted its existence. However, his notes make no mention of any nebulosity in the region, so although Bailey deserves credit for having "observed" the region, credit for the discovery of IC 1995 must go to Barnard. That is why I only wrote "photographed" instead of "discovered" in the credit line for Bailey.
Physical Information: Apparent size 135 arcmin (centered on HD 23985).

IC 1996 (= PGC 13755)
Discovered (Dec 8, 1899) by
DeLisle Stewart
A magnitude 15.6 spiral galaxy (type S??) in Reticulum (RA 03 45 07.7, Dec -57 19 30)
Historical Identification: Per Dreyer, IC 1996 (DeLisle Stewart #240, 1860 RA 03 41 55, NPD 147 46) is "most extremely faint, extremely small, extremely extended 95°."
Physical Information: Apparent size 0.8 by 0.2 arcmin?
Note About A Possible "Companion": Corwin lists a possible companion (WISEA J034505.45-571912.8) at RA 03 45 05.4, Dec -57 19 13 (just north of the northwestern 'end' of IC 1996), but other than its position, apparent size (about ? arcmin, based on the images below) and infrared magnitude, nothing appears to be known about it, so whether it is a companion of IC 1996 or an even more distant galaxy is mere speculation.

IC 1997 (= PGC 13740)
Discovered (Dec 8, 1899) by
DeLisle Stewart
A magnitude 13.4 spiral galaxy (type Sa??) in Reticulum (RA 03 44 51.8, Dec -59 08 17)
Historical Identification: Per Dreyer, IC 1997 (DeLisle Stewart #241, 1860 RA 03 42 00, NPD 149 34) is "extremely faint, very small, round, considerably brighter middle, stellar nucleus."
Physical Information: Apparent size 1.2 by 0.6 arcmin?

IC 1998 (= PGC 13978)
Discovered (Dec 8, 1903) by
Stephane Javelle A magnitude 14.4 elliptical galaxy (type E2??) in Taurus (RA 03 51 31.3, Dec +01 11 23)
Historical Identification: Per Dreyer, IC 1998 (Javelle #982, 1860 RA 03 44 17, NPD 89 13.3) is "fast, small, round, brighter middle and nucleus."
Physical Information: Apparent size 0.9 by 0.7 arcmin?

IC 1999 (= PGC 13861)
Discovered (Dec 8, 1899) by
DeLisle Stewart
A magnitude 14.7 spiral galaxy (type S(r)a? pec) in Reticulum (RA 03 47 42.8, Dec -56 57 07)
Historical Identification: Per Dreyer, IC 1999 (DeLisle Stewart #243, 1860 RA 03 44 31, NPD 147 23) is "most extremely faint, very small, considerably extended 140°."
Physical Information: Apparent size 0.7 by 0.5 arcmin.
DSS image of spiral galaxy IC 1999
Above, a 2.4 arcmin wide DSS image of IC 1999
Below, a 12 arcmin wide DSS image centered on the galaxy
DSS image of region near spiral galaxy IC 1999

Corwin lists a possible companion () at RA 03 47 42.3, Dec -56 57 00
But per GAIA it is only a magnitude 19.0 star
Celestial Atlas
(IC 1900 - 1949) ←IC Objects: IC 1950 - 1999→ (IC 2000 - 2049)