Astronomy:NGC 3888

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NGC 3888
NGC 3888 imaged by SDSS
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension 11h 47m 34.3762s[1]
Declination+55° 58′ 01.664″[1]
Redshift0.007986±0.0000100[1]
Helio radial velocity2,394±3 km/s[1]
Distance129.97 ± 2.51 Mly (39.850 ± 0.770 Mpc)[2]
Group or clusterNGC 3780 group (LGG 247)
Apparent magnitude (V)12.7g[1]
Characteristics
TypeSAB(rs)c[1]
Size~74,200 ly (22.74 kpc) (estimated)[1]
Apparent size (V)1.31′ × 1.15′[1]
Other designations
IRAS 11449+5614, UGC 6765, MCG+09-19-189, PGC 36789[1]

NGC 3888 is an intermediate spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is 2,560±12 km/s, which corresponds to a Hubble distance of 123.2 ± 8.6 Mly (37.76 ± 2.65 Mpc).[1] Additionally, six non-redshift measurements give a farther mean distance of 129.97 ± 2.51 Mly (39.850 ± 0.770 Mpc).[2] It was discovered by German-British astronomer William Herschel on 14 April 1789.[3][4]

NGC 3888 is a starburst galaxy.[1] It also has a nucleus which shines in the ultraviolet range, and is thus listed in Markarian's catalogue as Mrk 188.[5]

NGC 3780 group

NGC 3888 is a member of the NGC 3780 group (also known as LGG 247). This group contains 4 galaxies, including NGC 3780, UGC 6596 (d), and UGC 6774 (d).[6][7]

Supernova

One supernova has been observed in NGC 3888:

  • SN 2015Q (Type Ib, mag. 16) was discovered by American amateur astronomer Patrick Higgins on 17 June 2015.[8][9]

See also

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "Results for object NGC 3888". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+3888. 
  2. ↑ 2.0 2.1 "Distance Results for NGC 3888". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+3888. 
  3. ↑ Herschel, William (1802). "Catalogue of 500 New Nebulae, Nebulous Stars, Planetary Nebulae, and Clusters of Stars; with Remarks on the Construction of the Heavens". Philosophical Transactions of the Royal Society of London 92: 477–528. doi:10.1098/rstl.1802.0021. Bibcode: 1802RSPT...92..477H. 
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 3888". https://cseligman.com/text/atlas/ngc38a.htm#3888. 
  5. ↑ Markaryan, B. E. (1969). "Galaxies with an ultraviolet continuum. II". Astrophysics 5 (3): 206. doi:10.1007/BF01004709. Bibcode: 1969Ap......5..206M. 
  6. ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series 100: 47. Bibcode: 1993A&AS..100...47G. 
  7. ↑ "LGG 247". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LGG+247. 
  8. ↑ Wiggins, P. et al. (2015). "Supernova 2015Q in NGC 3888 = PSN J11473508+5558147". Central Bureau Electronic Telegrams (4128): 1. Bibcode: 2015CBET.4128....1W. 
  9. ↑ "SN 2015Q". IAU. https://www.wis-tns.org/object/2015Q. 

Coordinates: Sky map 11h 47m 34.3762s, +55° 58′ 01.664″



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