Celestial Atlas
(IC 3600 - 3649) ←     IC Objects: IC 3650 - 3699 Link for sharing this page on Facebook     → (IC 3700 - 3749)
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3650, 3651, 3652, 3653, 3654, 3655, 3656, 3657, 3658, 3659, 3660, 3661, 3662, 3663, 3664, 3665, 3666,
3667, 3668, 3669, 3670, 3671, 3672, 3673, 3674, 3675, 3676, 3677, 3678, 3679, 3680, 3681, 3682, 3683,
3684, 3685, 3686, 3687, 3688, 3689, 3690, 3691, 3692, 3693, 3694, 3695, 3696, 3697, 3698, 3699

Page last updated Oct 28, 2013
WORKING: Check positions, historical IDs (Corwin+), add remaining basic pix, captions, tags

IC 3650
Recorded (Mar 23, 1903) by
Max Wolf
A pair of 16th magnitude stars in Coma Berenices (RA 12 40 48.6, Dec +26 28 22)
Per Dreyer, IC 3650 (Wolf list IV #268, 1860 RA 12 33 53, NPD 62 45.4) is "extremely faint, very small, brighter middle, spiral". The position precesses to RA 12 40 47.9, Dec +26 28 27, near the northern member of the pair listed above, so the identification is certain. (Per Corwin, the image of the two stars is blended on a print of Wolf's plate, but his position is biased toward the brighter northwestern star.)
SDSS image of region near the pair of stars listed as IC 3650, also showing IC 3640, IC 3641, IC 3644, IC 3645 and IC3646
Above, a 12 arcmin wide SDSS image centered on IC 3650
Also shown are IC 3640, 3641, 3644, 3645 and 3646

IC 3651 (= PGC 42500)
Discovered (Mar 23, 1903) by
Max Wolf (4-269)
A magnitude 13.3 lenticular galaxy (type S0 pec?) in Coma Berenices (RA 12 40 52.8, Dec +26 43 43)
Based on a recessional velocity of 4730 km/sec, IC 3651 is about 220 million light years away. Given that and its apparent size of 1.2 by 1.2 arcmin, it is about 75 thousand light years across.
SDSS image of lenticular galaxy IC 3651
Above, a 2.4 arcmin wide SDSS image of IC 3651
Below, a 12 arcmin wide SDSS image centered on the galaxy, also showing IC 3642
SDSS image of region near lenticular galaxy IC 3651, also showing IC 3642

IC 3652 (= PGC 42521)
Discovered (May 10, 1904) by
Royal Frost (1011)
A magnitude 13.7 elliptical galaxy (type dE1?) in Virgo (RA 12 40 58.7, Dec +11 11 03)
Apparent size 1.4 by 1.2 arcmin. Listed as a member (VCC 1861) of the Virgo Cluster.
SDSS image of elliptical galaxy IC 3652
Above, a 2.4 arcmin wide SDSS image of IC 3652
Below, a 12 arcmin wide SDSS image centered on the galaxy
SDSS image of region near elliptical galaxy IC 3652

IC 3653 (= PGC 42550)
Discovered (May 10, 1904) by
Royal Frost (1012)
A magnitude 13.8 elliptical galaxy (type E1?) in Virgo (RA 12 41 15.7, Dec +11 23 16)
Apparent size 0.95 by 0.85 arcmin. Listed as a member (VCC 1871) of the Virgo Cluster.
SDSS image of elliptical galaxy IC 3653
Above, a 1.2 arcmin wide SDSS image of IC 3653
Below, a 12 arcmin wide SDSS image centered on the galaxy
SDSS image of region near elliptical galaxy IC 3653

IC 3654 (= PGC 86326)
Discovered (Jan 27, 1904) by
Max Wolf
A magnitude 15.3 lenticular galaxy (type E/S0? pec) in Coma Berenices (RA 12 41 12.4, Dec +22 35 24)
Per Dreyer, IC 3654 (Wolf list VI #3, 1860 RA 12 34 15, NPD 66 38.5) is "faint, small, irregular figure, nucleus". The position precesses to RA 12 41 12.3, Dec +22 35 21, right on the galaxy, so the identification is certain. Apparently interacting with IC 3656. Apparent size 0.5 by 0.35 arcmin.
SDSS image of lenticular galaxy IC 3654 and spiral galaxy IC 3656
Above, a 1.2 arcmin wide SDSS image of IC 3654 and 3656
Below, a 12 arcmin wide SDSS image centered on the pair
SDSS image of region near lenticular galaxy IC 3654 and spiral galaxy IC 3656

IC 3655 (= PGC 1633163)
Discovered (Jan 27, 1904) by
Max Wolf (6-4)
A magnitude 16.1 spiral galaxy (type Sc? pec) in Coma Berenices (RA 12 41 14.4, Dec +20 40 00)
Apparent size 0.6 by 0.5 arcmin. Probably a starburst or Seyfert galaxy, but almost nothing is actually known about it.
SDSS image of spiral galaxy IC 3655
Above, a 1.2 arcmin wide SDSS image of IC 3655
Below, a 12 arcmin wide SDSS image centered on the galaxy
SDSS image of region near spiral galaxy IC 3655

IC 3656 (= PGC 86327)
Discovered (Jan 27, 1904) by
Max Wolf (6-5)
A magnitude 15.1 spiral galaxy (type Sbc? pec) in Coma Berenices (RA 12 41 13.8, Dec +22 35 41)
Apparent size 0.45 by 0.2 arcmin. Apparently interacting with IC 3654, which see for images.

IC 3657
Recorded (Jan 27, 1904) by
Max Wolf
A magnitude 16(?) lenticular galaxy (type SB0?) in Coma Berenices (RA 12 41 19.0, Dec +21 40 31)
Per Dreyer, IC 3657 (Wolf list VI #6, 1860 RA 12 34 21, NPD 67 33.3) is "very faint, very small, with a nucleus; perhaps a nebulous star". The position precesses to RA 12 41 18.8, Dec +21 40 34, almost exactly on the object listed above, and given the description the identification would appear to be certain. Corwin states that there is a defect on Wolf's plate, and at first glance it appears that is all that Wolf actually recorded; but the object listed above is faintly visible on a print of the plate, and probably makes a greater contribution to Wolf's "nebulous star" on the original plate. So although IC 3657 could be listed as nonexistent, it is equally reasonable to treat the object that is there as being Wolf's VI-6. Note: The extremely small apparent size of the galaxy gives it a nearly stellar appearance, and in all previous studies it was listed as a star, but as shown in the closeup below it must actually be a very distant galaxy. Apparent size 0.2 by 0.15 arcmin, but its recessional velocity is unknown, so other than stating that it must be hundreds of millions of light years away, its actual distance and size are unknown.
SDSS image of lenticular galaxy IC 3657
Above, a 0.6 arcmin wide SDSS image of IC 3657
Below, a 2.4 arcmin wide SDSS image compares IC 3657 to two 17th magnitude stars
SDSS image comparing lenticular galaxy IC 3657 to two stars
Below, a 12 arcmin wide SDSS image centered on the galaxy
SDSS image of region near lenticular galaxy IC 3657

IC 3658 (= PGC 42558)
Discovered (May 7, 1904) by
Royal Frost (1013)
A magnitude 14.0 elliptical galaxy (type E??) in Coma Berenices (RA 12 41 20.6, Dec +14 42 04)
Apparent size 1.3 by 0.7 arcmin? Listed as a member (VCC 1876) of the Virgo Cluster.

IC 3659 (= PGC 86328)
Discovered (Jan 27, 1904) by
Max Wolf (6-7)
A magnitude 15.4 spiral galaxy (type S??) in Coma Berenices (RA 12 41 27.6, Dec +22 55 51)
Apparent size 0.4 by 0.2 arcmin?

IC 3660
Recorded (Jan 27, 1904) by
Max Wolf (6-8)
A star in Coma Berenices (RA 12 41 36.8, Dec +21 05 35)

IC 3661 (= PGC 1670992)
Discovered (Jan 27, 1904) by
Max Wolf (6-9)
A magnitude 15.8 spiral galaxy (type S??) in Coma Berenices (RA 12 41 35.6, Dec +22 29 42)
Apparent size 0.6 by 0.1 arcmin?

IC 3662 (= PGC 42583)
Discovered (Jun 25, 1903) by
Max Wolf (1226)
A magnitude 14.3 spiral galaxy (type S??) in Coma Berenices (RA 12 41 36.2, Dec +23 25 31)
Apparent size 0.7 by 0.7 arcmin?

IC 3663 (= PGC 42586)
Discovered (May 10, 1904) by
Royal Frost (1014)
A magnitude 14.3 elliptical galaxy (type E??) in Virgo (RA 12 41 39.3, Dec +12 14 51)
Apparent size 0.8 by 0.5 arcmin? Listed as a member (VCC 1886) of the Virgo Cluster.

IC 3664
Recorded (Jan 27, 1904) by
Max Wolf (6-11)
A star in Coma Berenices (RA 12 41 41.4, Dec +19 56 40)

IC 3665 (= PGC 42598)
Discovered (May 10, 1904) by
Royal Frost (1015)
A magnitude 14.5 irregular galaxy (type Im?) in Virgo (RA 12 41 46.6, Dec +11 29 17)
Apparent size 1.4 by 0.75 arcmin. Listed as a member (VCC 1890) of the Virgo Cluster.
SDSS image of irregular galaxy IC 3665
Above, a 1.8 arcmin wide SDSS image of IC 3665
Below, a 12 arcmin wide SDSS image centered on the galaxy
SDSS image of region near irregular galaxy IC 3665

IC 3666
Recorded (Jan 26, 1900) by
Arnold Schwassmann (72)
A magnitude 14(?) star in Virgo (RA 12 41 53.4, Dec +07 50 42)

IC 3667 (=
NGC 4618 = PGC 42575 = Arp 23)
Discovered (Apr 9, 1787) by William Herschel (and later listed as NGC 4618)
Discovered (Mar 21, 1903) by Max Wolf (5-1) (and later listed as IC 3667)
A magnitude 10.8 spiral galaxy (type SB(rs)m) in Canes Venatici (RA 12 41 33.0, Dec +41 09 04)
This entry will primarily contain historical information; for anything else see NGC 4618.

IC 3668
Discovered (Mar 21, 1903) by
Max Wolf (5-2)
An emission region in Canes Venatici (RA 12 41 32.7, Dec +41 07 33)
A star-forming region in NGC 4618.

IC 3669
Discovered (Mar 21, 1903) by
Max Wolf (5-3)
An emission region in Canes Venatici (RA 12 41 37.4, Dec +41 08 25)
A star-forming region in NGC 4618.

IC 3670 (= PGC 1398556)
Discovered (May 10, 1904) by
Royal Frost (1016)
A magnitude 15.0 elliptical galaxy (type E2??) in Virgo (RA 12 41 55.0, Dec +11 46 24)
Apparent size 0.5 by 0.4 arcmin?

IC 3671 (= PGC 42599)
Discovered (Jun 25, 1903) by
Stephane Javelle (1227)
A magnitude 14.7 spiral galaxy (type SBbc R??) in Coma Berenices (RA 12 41 51.3, Dec +23 30 37)
Apparent size 0.5 by 0.5 arcmin?

IC 3672 (=
IC 809 = PGC 42638)
Discovered (May 6, 1888) by Lewis Swift (and later listed as IC 809)
Discovered (Sep 8, 1900) by Arnold Schwassmann (213) (and later listed as IC 3672)
A magnitude 13.2 elliptical galaxy (type E0??) in Virgo (RA 12 42 08.7, Dec +11 45 15)
This entry will primarily contain historical information; for anything else see IC 809.

IC 3673
Recorded (Jan 27, 1904) by
Max Wolf (6-13)
A star in Coma Berenices (RA 12 42 04.3, Dec +21 08 18)

IC 3674
Recorded (Jan 27, 1904) by
Max Wolf (6-14)
A pair of stars in Coma Berenices (RA 12 42 05.4, Dec +22 30 39)

IC 3675 (=
NGC 4625 = PGC 42607)
Discovered (Apr 9, 1787) by William Herschel (and later listed as NGC 4625)
Discovered (Mar 21, 1903) by Max Wolf (5-4) (and later listed as IC 3675)
A magnitude 12.4 spiral galaxy (type SBm pec??) in Canes Venatici (RA 12 41 52.5, Dec +41 16 25)
This entry will primarily contain historical information; for anything else see NGC 4625.

IC 3676
Recorded (Nov 19, 1900) by
Arnold Schwassmann (294)
A magnitude 14(?) star in Coma Berenices (RA 12 42 12.3, Dec +13 33 35)

IC 3677 (= PGC 1638014)
Discovered (Jan 27, 1904) by
Max Wolf (6-16)
A magnitude 16.0 elliptical galaxy (type E0??) in Coma Berenices (RA 12 42 11.8, Dec +20 53 08)
Apparent size 0.2 by 0.2 arcmin?

IC 3678 (= PGC 1638720)
Discovered (Jan 27, 1904) by
Max Wolf (6-17)
A magnitude 15.9 spiral galaxy (type S??) in Coma Berenices (RA 12 42 12.6, Dec +20 52 49)
Apparent size 0.2 by 0.2 arcmin?

IC 3679
Recorded (Jan 27, 1904) by
Max Wolf (6-18)
A pair of stars in Coma Berenices (RA 12 42 11.4, Dec +22 49 06)

IC 3680
Recorded (Mar 21, 1903) by
Max Wolf (5-5)
A star in Canes Venatici (RA 12 42 00.9, Dec +39 06 15)
SDSS image of region near the star listed as IC 3680, also showing the star listed as IC 3681
Above, a 12 arcmin wide SDSS image centered on IC 3680, also showing IC 3681

IC 3681
Recorded (Mar 21, 1903) by
Max Wolf (5-6)
A magnitude 14(?) star in Canes Venatici (RA 12 42 01.7, Dec +39 05 01)
(See IC 3680 for an image.)

IC 3682
Recorded (Jan 27, 1904) by
Max Wolf (6-19)
A magnitude 14(?) star in Coma Berenices (RA 12 42 19.5, Dec +20 51 52)
(See IC 3683 for an image.)

IC 3683 (= PGC 1637726)
Discovered (Jan 27, 1904) by
Max Wolf (6-20)
A magnitude 16.3 spiral galaxy (type SB(rs)bc?) in Coma Berenices (RA 12 42 20.6, Dec +20 52 19)
Apparent size 0.35 by 0.35 arcmin.
SDSS image of spiral galaxy IC 3683
Above, a 0.6 arcmin wide SDSS image of IC 3683
Below, a 12 arcmin wide SDSS image centered on the galaxy, also showing IC 3682
SDSS image of region near spiral galaxy IC 3683, also showing the star listed as IC 3682

IC 3684 (= PGC 42679)
Discovered (May 10, 1904) by
Royal Frost (1017)
A magnitude 15.1 lenticular galaxy (type S0/a??) in Virgo (RA 12 42 26.5, Dec +11 44 22)
Apparent size 1.1 by 0.4 arcmin? Listed as a member (VCC 1921) of the Virgo Cluster.

IC 3685
Recorded (Nov 27, 1900) by
Arnold Schwassmann (32)
A magnitude 14(?) star in Virgo (RA 12 42 19.5, Dec +20 51 52)

IC 3686 (= PGC 42698)
Discovered (May 10, 1904) by
Royal Frost (1018)
A magnitude 14.3 spiral galaxy (type Sc??) in Virgo (RA 12 42 36.0, Dec +10 33 54)
Apparent size 1.0 by 0.4 arcmin? Listed as a member (VCC 1927) of the Virgo Cluster.

IC 3687 (= PGC 42656)
Discovered (Mar 21, 1903) by
Max Wolf (5-7)
A magnitude 13.5 irregular galaxy (type IAB(s)m) in Canes Venatici (RA 12 42 15.1, Dec +38 30 13)
Based on a recessional velocity of 355 km/sec, IC 3687 is about 16 million light years away, in good agreement with redshift-independent distance estimates of 10 to 15 million light years, particularly considering the fact that for such distances peculiar (non-Hubble expansion) velocities can substantially affect the results. Presuming an actual distance of about 15 million light years, the 2.8 by 2.0 apparent size of the main body of the galaxy corresponds to about 12 thousand light years, and the 3.3 by 2.6 arcmin wide outer extensions correspond to about 14 thousand light years.
SDSS image of irregular galaxy IC 3687
Above, a 3.6 arcmin wide (considerably enhanced) SDSS image of IC 3687
Below, a 12 arcmin wide SDSS image centered on the galaxy
SDSS image of region near irregular galaxy IC 3687

IC 3688 (=
NGC 4633 = PGC 42699)
Discovered (Apr 27, 1887) by Edward Swift (and later listed as NGC 4633)
Discovered (Nov 23, 1900) by Arnold Schwassmann (295) (and later listed as IC 3688)
A magnitude 13.1 spiral galaxy (type SBd??) in Coma Berenices (RA 12 42 37.1, Dec +14 21 25)
This entry will primarily contain historical information; for anything else, see NGC 4633.

IC 3689 (= PGC 3794528)
Discovered (Jan 27, 1904) by
Max Wolf (6-21)
A magnitude 15.0 elliptical galaxy (type E0??) in Coma Berenices (RA 12 42 37.0, Dec +20 51 02)
Apparent size 0.2 by 0.2 arcmin?

IC 3690 (= PGC 42732)
Discovered (May 10, 1904) by
Royal Frost (1019)
A magnitude 14.3 spiral galaxy (type Sb??) in Virgo (RA 12 42 49.2, Dec +10 21 28)
Apparent size 1.1 by 0.3 arcmin? Listed as a member (VCC 1940) of the Virgo Cluster.

IC 3691 (= PGC 1675869)
Discovered (Jan 27, 1904) by
Max Wolf (6-23)
A magnitude 16.4 irregular galaxy (type Irr??) in Coma Berenices (RA 12 42 49.3, Dec +22 46 22)
Apparent size 0.6 by 0.6 arcmin?

IC 3692 (= PGC 42743)
Discovered (Jan 27, 1904) by
Max Wolf (6-24)
A magnitude 13.8 spiral galaxy (type SBa??) in Coma Berenices (RA 12 42 53.9, Dec +20 59 22)
Apparent size 0.9 by 0.7 arcmin?

IC 3693 (= PGC 42754)
Discovered (May 10, 1904) by
Royal Frost (1020)
A magnitude 14.2 elliptical galaxy (type E3??) in Virgo (RA 12 42 58.0, Dec +10 40 53)
Apparent size 0.6 by 0.4 arcmin? Listed as a member (VCC 1948) of the Virgo Cluster.

IC 3694 (= PGC 42766)
Discovered (May 10, 1904) by
Royal Frost (1021)
A magnitude 14.1 spiral galaxy (type Sbc??) in Virgo (RA 12 43 07.3, Dec +11 12 41)
Apparent size 0.6 by 0.4 arcmin? Listed as a member (VCC 1954) of the Virgo Cluster.

IC 3695
Recorded (Jan 27, 1904) by
Max Wolf (6-25)
A magnitude 14(?) star in Coma Berenices (RA 12 42 32.2, Dec +06 52 15)

IC 3696 (= PGC 4338751)
Discovered (Jan 27, 1904) by
Max Wolf (6-26)
A magnitude 16.0 elliptical galaxy (type E0??) in Coma Berenices (RA 12 43 09.6, Dec +19 55 41)
Apparent size 0.2 by 0.2 arcmin?

IC 3697 (= PGC 42756)
Discovered (Mar 21, 1903) by
Max Wolf (5-8)
A magnitude 15.3 spiral galaxy (type S??) in Canes Venatici (RA 12 42 58.8, Dec +39 50 46)
Apparent size 0.8 by 0.7 arcmin?

IC 3698 (= PGC 42790)
Discovered (May 10, 1904) by
Royal Frost (1022)
A magnitiude 14.5 spiral galaxy (type Sc?) in Virgo (RA 12 43 17.3, Dec +11 12 40)
Apparent size 0.55 by 0.45 arcmin. Listed as a member (VCC 1961) of the Virgo Cluster.
SDSS image of spiral galaxy IC 3698
Above, a 0.8 arcmin wide SDSS image of IC 3698
Below, a 12 arcmin wide SDSS image centered on the galaxy, also showing IC 3694
SDSS image of region near spiral galaxy IC 3698, also showing IC 3694

IC 3699
Recorded (Jan 27, 1904) by
Max Wolf (6-27)
A pair of stars in Coma Berenices (RA 12 43 17.3, Dec +19 00 04)
Celestial Atlas
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