NGC 3902 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Leo |
Right ascension | 11h 49m 18.746s [1] |
Declination | +26° 07′ 17.50″ [1] |
Redshift | 0.01199 [2] |
Heliocentric radial velocity | 3573 km/s [2] |
Distance | 188.6 Mly (57.81 Mpc) [3] |
Apparent magnitude (B) | 13.99 [4] |
Characteristics | |
Type | SAB(s)bc: [5] |
Other designations | |
UGC 6790, MCG +04-28-055, PGC 36923 [2] |
NGC 3902 is an intermediate spiral galaxy in the constellation Leo. It was discovered on April 6, 1785, by William Herschel and observed on February 19, 1827, by John Herschel. [6] It is estimated to be 180 to 185 million light-years away, and its redshift-independent distance estimates to about 185 to 240 million light-years. It is around 75,000 light-years in diameter. [7] [6]
NGC 3902 is one galaxy within the NGC 3902 group (or LGG 254), a group of galaxies in Leo; the other galaxies of which are NGC 3920, NGC 3944, UGC 6806 and UGC 6807.
NGC 3632 and NGC 3626 is an unbarred lenticular galaxy and Caldwell object in the constellation Leo. It was discovered by William Herschel, on 14 March 1784. It shines at magnitude +10.6/+10.9. Its celestial coordinates are RA 11h 20.1m, dec +18° 21′. It is located near the naked-eye-class A4 star Zosma, as well as galaxies NGC 3608, NGC 3607, NGC 3659, NGC 3686, NGC 3684, NGC 3691, NGC 3681, and NGC 3655. Its dimensions are 2′.7 × 1′.9. The galaxy belongs to the NGC 3607 group some 70 million light-years distant, itself one of the many Leo II groups.
NGC 5201 is a spiral galaxy located in the constellation Ursa Major. It was discovered on April 14, 1789 by German-born British astronomer William Herschel. It is about 384 million light years away.
NGC 972 is a dusty spiral galaxy in the northern constellation of Aries, located at an approximate distance of 49.8 Mly from the Milky Way. It was discovered in 1784 by William Herschel. The galactic features suggest it may have undergone a merger with a gas-rich companion, giving it asymmetrical arms, plus starburst activity in the nucleus and an off-planar nuclear ring. The inner 3.6 kpc of the galaxy is undergoing star formation at the rate of 2.1–2.7 M☉·yr−1, but it lacks a nuclear bulge.
NGC 834 is a spiral galaxy located in the Andromeda constellation. It is estimated to be 160 million light-years away from the Milky Way galaxy and has a diameter of about 65,000 light-years. The object was discovered on September 21, 1786 by the astronomer William Herschel.
NGC 701 is a spiral galaxy with a high star formation rate in the constellation Cetus. It is estimated to be 86 million light years from the Milky Way and has a diameter of approximately 65,000 light years. The object was discovered on January 10, 1785 by the German-British astronomer William Herschel.
NGC 990 is an elliptical galaxy located in the constellation Aries about 153 million light-years from the Milky Way. It was discovered by the German - British astronomer William Herschel in 1786.
NGC 850 is a lenticular galaxy in the constellation Cetus. It is estimated to be 300 million light-years from the Milky Way and has a diameter of approximately 130,000 ly.
NGC 910 is an elliptical galaxy in the constellation of Andromeda. NGC 910 was discovered on October 17, 1786 by the German-British astronomer William Herschel. It is the brightest galaxy in the cluster Abell 347.
NGC 812 is a spiral galaxy located in the Andromeda constellation, an estimated 175 million light-years from the Milky Way. NGC 812 was discovered on December 11, 1876 by astronomer Édouard Stephan.
NGC 911 is an elliptical galaxy located in the constellation Andromeda about 258 million light years from the Milky Way. It was discovered by French astronomer Édouard Stephan on 30 October 1878. It is a member of the galaxy cluster Abell 347.
NGC 941 is an intermediate spiral galaxy in the constellation Cetus. It is an estimated 16.83 MPc from the Milky Way and has a diameter of approximately 55,000 light years. The galaxies NGC 926, NGC 934, NGC 936, NGC 955 are located in the same sky area. NGC 941 was discovered by the astronomer William Herschel on 6 January 1785.
NGC 706 is a spiral galaxy located in the Pisces constellation about 230 million light years from the Milky Way. It was discovered by the German–British astronomer William Herschel in 1786.
NGC 821 is an elliptical galaxy in the constellation Aries. It is estimated to be about 80 million light-years from the Milky Way and has a diameter of approximately 55,000 light years. NGC 821 was discovered on September 4, 1786, by astronomer Wilhelm Herschel.
NGC 768 is a barred spiral galaxy located in the constellation Cetus about 314 million light years from the Milky Way. It was discovered by the American astronomer Lewis Swift in 1885.
NGC 769 is a spiral galaxy located in the constellation Triangulum about 197 million light years from the Milky Way. It was discovered by the American astronomer Truman Safford in 1866.
NGC 644 is a barred spiral galaxy in the constellation Phoenix in the southern sky. It is estimated to be 270 million light-years from the Milky Way and has a diameter of approximately 130,000 light-years. Together with NGC 641, it probably forms a gravitationally bound pair of galaxies. The object was discovered on September 5, 1834 by John Herschel.
NGC 645 is a barred spiral galaxy in the constellation Pisces. It is estimated to be 112 million light-years from the Milky Way and has a diameter of approximately 115,000 light years. The object was discovered on October 27, 1864 by astronomer Albert Marth.
NGC 532 is a spiral galaxy in the constellation Pisces. The galaxy is approximately 100 million light-years away from the Earth, and was discovered on September 21, 1786, by the German-British astronomer William Herschel.
NGC 624 is a barred spiral galaxy in the constellation of Cetus, which is about 264 million light years from the Milky Way. It was discovered on November 28, 1785, by the German-British astronomer William Herschel.
NGC 636 is an elliptical galaxy in the Cetus constellation. It is located about 96 million light-years from the Milky Way. It was discovered by the German–British astronomer William Herschel in 1785.