Celestial Atlas
(NGC 3850 - 3899) ←     NGC Objects: NGC 3900 - 3949 Link for sharing this page on Facebook     → (NGC 3950 - 3999)
Click here for Introductory Material
QuickLinks:
3900, 3901, 3902, 3903, 3904, 3905, 3906, 3907, 3908, 3909, 3910, 3911, 3912, 3913, 3914, 3915, 3916,
3917, 3918, 3919, 3920, 3921, 3922, 3923, 3924, 3925, 3926, 3927, 3928, 3929, 3930, 3931, 3932, 3933,
3934, 3935, 3936, 3937, 3938, 3939, 3940, 3941, 3942, 3943, 3944, 3945, 3946, 3947, 3948, 3949

Page last updated Jun 23, 2013
WORKING: Add positions/physical data (per Steinicke)

NGC 3900 (= PGC 36914)
Discovered (Apr 6, 1785) by
William Herschel
An 11th-magnitude lenticular galaxy (type S0/a?) in Leo (RA 11 49 09.3, Dec +27 01 18)
SDSS image of NGC 3900
Above, a 4 arcmin wide closeup of NGC 3900
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near NGC 3900

NGC 3901
Discovered (Apr 2, 1801) by
William Herschel

NGC 3902
Discovered (Apr 6, 1785) by
William Herschel

NGC 3903
Discovered (Apr 21, 1835) by
John Herschel

NGC 3904
Discovered (Mar 7, 1791) by
William Herschel

NGC 3905
Discovered (1880) by
Andrew Common (24)

NGC 3906
Discovered (Mar 9, 1788) by
William Herschel

NGC 3907
Discovered (Apr 15, 1828) by
John Herschel

NGC 3908
Discovered (Apr 10, 1885) by
Lewis Swift (1-17)

NGC 3909
Discovered (Mar 1, 1835) by
John Herschel

NGC 3910
Discovered (Mar 3, 1869) by
Otto Struve

NGC 3911
Discovered (Apr 10, 1785) by
William Herschel

NGC 3912 (=
NGC 3899)
Discovered (Apr 6, 1785) by William Herschel (and later listed as NGC 3912)
Discovered (Mar 26, 1827) by John Herschel (and later listed as NGC 3899)

NGC 3913 (= PGC 37024 =
IC 740)
Discovered (Apr 14, 1789) by William Herschel (and later listed as NGC 3913)
Discovered (May 8, 1890) by Lewis Swift (and later listed as IC 740)
A 13th-magnitude spiral galaxy (type (R')SA(rs)d?) in Ursa Major (RA 11 50 39.0, Dec +55 21 13)
Apparent size 2.9 by 2.9 arcmin. See IC 740 for a discussion of the duplicate listing (more to follow in the next iteration of this page).
SDSS image of spiral galaxy NGC 3913
Above, a 3 arcmin wide closeup of NGC 3913
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near spiral galaxy NGC 3913

NGC 3914
Discovered (Apr 13, 1784) by
William Herschel

NGC 3915 (probably =
IC 2963, but definitely not = IC 738)
Discovered (Apr 24, 1784) by William Herschel (and later listed as NGC 3915)
Discovered (Mar 30, 1892) by Guillaume Bigourdan (and later listed as IC 2963)

NGC 3916
Discovered (Apr 14, 1789) by
William Herschel

NGC 3917
Discovered (Mar 17, 1790) by
William Herschel

NGC 3918, the Blue Planetary
Discovered (Apr 3, 1834) by
John Herschel

NGC 3919
Discovered (Apr 6, 1864) by
Heinrich d'Arrest

NGC 3920
Discovered (Mar 28, 1832) by
John Herschel

NGC 3921
Discovered (Apr 14, 1789) by
William Herschel

NGC 3922 (=
NGC 3924)
Discovered (Mar 9, 1788) by William Herschel (and later listed as NGC 3922)
Discovered (Mar 17, 1790) by William Herschel (and later listed as NGC 3924)

NGC 3923
Discovered (Mar 7, 1791) by
William Herschel

NGC 3924 (=
NGC 3922)
Discovered (Mar 9, 1788) by William Herschel (and later listed as NGC 3922)
Discovered (Mar 17, 1790) by William Herschel (and later listed as NGC 3924)

NGC 3925
Discovered (Feb 19, 1863) by
Heinrich d'Arrest

NGC 3926
Discovered (Apr 26, 1785) by
William Herschel

NGC 3927
Discovered (Apr 27, 1864) by
Heinrich d'Arrest

NGC 3928, the Miniature Spiral
Discovered (Feb 9, 1788) by
William Herschel

NGC 3929
Discovered (Dec 4, 1861) by
Heinrich d'Arrest

NGC 3930
Discovered (Mar 17, 1787) by
William Herschel
The first IC notes "The star is Groombridge 1830, the large proper motion of which is illustrated by the change of relative position of nebula and star".

NGC 3931 (= PGC 37073)
Discovered (Apr 12, 1789) by
William Herschel
A 13th-magnitude lenticular galaxy (type E/S0) in Ursa Major (RA 11 51 13.4, Dec +52 00 05)
Apparent size 1.1 by 0.9 arcmin. Used by the de Vaucouleurs Atlas of Galaxy Types as an example of galaxy type SA0.
SDSS image of lenticular galaxy NGC 3931
Above, a 2.4 arcmin wide closeup of NGC 3931
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near lenticular galaxy NGC 3931

NGC 3932
Recorded (Dec 4, 1861) by
Heinrich d'Arrest (125)
A 14th-magnitude star in Ursa Major (RA 11 51 53.0, Dec +48 40 03)

NGC 3933
Discovered (1871) by
Alphonse Borrelly (5)

NGC 3934
Discovered (1871) by
Alphonse Borrelly (6)

NGC 3935
Discovered (Apr 29, 1827) by
John Herschel

NGC 3936
Discovered (Mar 24, 1835) by
John Herschel

NGC 3937
Discovered (Apr 27, 1785) by
William Herschel

NGC 3938
Discovered (Feb 6, 1788) by
William Herschel

NGC 3939 (=
NGC 3890)
Discovered (Dec 12, 1797) by William Herschel (and later listed as NGC 3890)
Discovered (Apr 2, 1801) by William Herschel (and later listed as NGC 3939)

NGC 3940
Discovered (Apr 26, 1785) by
William Herschel

NGC 3941 (= PGC 37235)
Discovered (Mar 19, 1787) by
William Herschel
A 10th-magnitude lenticular galaxy (type SB0) in Ursa Major (RA 11 52 55.3, Dec +36 59 13)
Apparent size 3.5 by 2.5 arcmin.
SDSS image of lenticular galaxy NGC 3941
Above, a 3.6 arcmin wide closeup of NGC 3941
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near lenticular galaxy NGC 3941

NGC 3942
Discovered (1886) by
Francis Leavenworth (II-451)

NGC 3943
Discovered (Apr 27, 1865) by
Heinrich d'Arrest

NGC 3944
Discovered (Apr 6, 1785) by
William Herschel

NGC 3945 (= PGC 37258)
Discovered (Mar 19, 1790) by
William Herschel
An 11th-magnitude lenticular galaxy (type SB0) in Ursa Major (RA 11 53 13.4, Dec +60 40 31)
Apparent size 5.2 by 3.5 arcmin. Used by the de Vaucouleurs Atlas of Galaxy Types as an example of galaxy type (R)SB(rl)0+.
SDSS image of lenticular galaxy NGC 3945
Above, a 6 arcmin wide closeup of NGC 3945
Below, a 12 arcmin wide region centered on the galaxy
SDSS image of region near lenticular galaxy NGC 3945

NGC 3946
Discovered (Apr 23, 1886) by
Guillaume Bigourdan (I-49)

NGC 3947
Discovered (Apr 26, 1785) by
William Herschel

NGC 3948
Recorded (Apr 23, 1886) by
Guillaume Bigourdan (I-50)
A 15th-magnitude star in Leo (RA 11 53 36.6, Dec +20 57 04)

NGC 3949 (= PGC 37290)
Discovered (Feb 5, 1788) by
William Herschel
An 11th-magnitude spiral galaxy (type SA(s)bc) in Ursa Major (RA 11 53 41.4, Dec +47 51 36)
NGC 3949's recessional velocity of 800 km/sec is too small in comparison to peculiar (non-Hubble-expansion) velocities to provide a reliable distance estimate. Taken at face value, it implies a distance of only 37 million light years, in poor agreement with redshift-independent distance estimates of 50 to 70 million light years. Presuming a distance of around 60 million light years, the galaxy's apparent size of 2.9 by 1.25 arcmins corresponds to about 50 thousand light years.
SDSS image of NGC 3949
Above, a 3 arcmin wide closeup of NGC 3949
Below, a 12 arcmin wide view of a region centered on the galaxy, also showing NGC 3950 just to its north
SDSS image of region near NGC 3949
Celestial Atlas
(NGC 3850 - 3899) ←     NGC Objects: NGC 3900 - 3949     → (NGC 3950 - 3999)