Jump to content

NGC 5102

Coordinates: Sky map 13h 21m 57.6070s, −36° 37′ 48.878″
From Wikipedia, the free encyclopedia
NGC 5102
Image
NGC 5102 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationCentaurus
Right ascension13h 21m 57.6070s[1]
Declination−36° 37′ 48.878″[1]
Redshift468 ± 2 km/s[1]
Distance12.1 ± 0.7 Mly (3.70 ± 0.23 Mpc)[2][3][4][5]
Apparent magnitude (V)10.4[1]
Characteristics
TypeSA0−[1]
Apparent size (V)8.7′ × 2.8′[1]
Other designations
ESO 382- G 050, IRAS 13191-3622, 2MASX J13215765-3637487, MCG -06-29-031, PGC 46674[1]

NGC 5102, also known as Iota's Ghost since it appears near Iota Centauri in the sky,[6] is a lenticular galaxy in the Centaurus A/M83 Group of galaxies. It was discovered by British astronomer John Herschel on 21 April 1835.[7]

Distance measurements

[edit]

At least two techniques have been used to measure the distance to NGC 5102. The surface brightness fluctuations distance measurement technique estimates distances to spiral galaxies based on the graininess of the appearance of their bulges. The distance measured to NGC 5102 using this technique is 13.0 ± 0.8 Mly (4.0 ± 0.2 Mpc).[2] However, NGC 5102 is close enough that the tip of the red giant branch (TRGB) method may be used to estimate its distance. The estimated distance to NGC 5102 using this technique is 11.1 ± 1.3 Mly (3.40 ± 0.39 Mpc).[3] Averaged together, these distance measurements give a distance estimate of 12.1 ± 0.7 Mly (3.70 ± 0.23 Mpc).[5]

Nova

[edit]

Although no supernovae have yet been observed in NGC 5102, the galaxy is close enough for classical novae to be detected. The first confirmed nova in this galaxy was discovered by ATLAS at magnitude 18.464 on 5 June 2026, and designated AT 2026ofr.[8]

References

[edit]
  1. 1 2 3 4 5 6 7 "Results for object NGC 5102". NASA/IPAC Extragalactic Database. Retrieved 2006-12-15.
  2. 1 2 J. L. Tonry; A. Dressler; J. P. Blakeslee; E. A. Ajhar; et al. (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". Astrophysical Journal. 546 (2): 681–693. arXiv:astro-ph/0011223. Bibcode:2001ApJ...546..681T. doi:10.1086/318301. S2CID 17628238.
  3. 1 2 I. D. Karachentsev; V. E. Karachentseva; W. K. Hutchmeier; D. I. Makarov (2004). "A Catalog of Neighboring Galaxies". Astronomical Journal. 127 (4): 2031–2068. Bibcode:2004AJ....127.2031K. doi:10.1086/382905.
  4. ↑ Karachentsev, I. D.; Kashibadze, O. G. (2006). "Masses of the local group and of the M81 group estimated from distortions in the local velocity field". Astrophysics. 49 (1): 3–18. Bibcode:2006Ap.....49....3K. doi:10.1007/s10511-006-0002-6. S2CID 120973010.
  5. 1 2 average(4.0 ± 0.2, 3.40 ± 0.39) = ((870 + 760) / 2) ± ((602 + 802)0.5 / 2) = 820 ± 50
  6. ↑ Stoyan, Ronald; Schurig, Stephan (2014). interstellarum Deep Sky Atlas. Erlangen: Cambridge University Press; Oculum-Verlag GmbH. ISBN 978-1-107-50338-0. OCLC 920437579.
  7. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 5102". Celestial Atlas. Retrieved 11 June 2026.
  8. ↑ "SN 2026ofr". Transient Name Server. IAU. Retrieved 11 June 2026.
[edit]
  • Wikimedia Commons logo Media related to NGC 5102 at Wikimedia Commons
  • NGC 5102 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Retrieved from "https://en.wikipedia.org/w/index.php?title=NGC_5102&oldid=1358889609"