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// Workers AI · dad joke modeWhat did NGC 888 say to NGC 889? Let's galaxy apart.

From Wikipedia, the free encyclopedia
NGC 888
NGC 888 imaged by Legacy Surveys
Observation data (J2000 epoch)
ConstellationHorologium
Right ascension02h 17m 27.1s[1]
Declination−59° 51′ 40″[1]
Redshift0.029190±0.000133[1]
Heliocentric radial velocity8,751±40 km/s[1]
Galactocentric velocity8662±40 km/s[1]
Distance416.7 ± 29.2 Mly (127.76 ± 8.96 Mpc)[1]
Apparent magnitude (V)13.0[2]
Apparent magnitude (B)14.0[2]
Surface brightness12.52[2]
Characteristics
TypeE1? pec[1] · [2] E/S0?[3] E[4]
Apparent size (V)0.8′ × 0.8′[2]
Notable featuresFlat-spectrum radio source[1]
Other designations
PGC 8743
ESO 115-2
AM 0215-600[2]

NGC 888 is a large and relatively distant elliptical galaxy in the constellation Horologium. Its velocity relative to the cosmic microwave background is 8662±40 km/s, corresponding to a Hubble distance of 127.8±9.0 Mpc.[1] It was discovered by British astronomer John Herschel in 1834.[3]

Characteristics

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A redshift-independent distance measurement gives 136.0 Mpc,[5] which is consistent within uncertainties with the Hubble distance.

NGC 888 is classified as a flat-spectrum radio galaxy.[1]

Galaxy pair

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NGC 888 and ESO 115-003 form a galaxy pair.[6] The Hubble distance of ESO 115-003 is 134.65±9.45 Mpc.[7] Considering the uncertainties in the distances, it is possible that the two galaxies form a physical pair.

Supernova

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One supernova has been observed in NGC 888:

References

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  1. 1 2 3 4 5 6 7 8 9 10 "Results for object NGC 888". NASA/IPAC Extragalactic Database. Retrieved 20 June 2022.
  2. 1 2 3 4 5 6 "Revised NGC and IC Catalog by Wolfgang Steinicke, NGC 800–899". astrovalleyfield.com. Retrieved 6 January 2024.
  3. 1 2 Courtney Seligman. "Celestial Atlas – NGC 888". Retrieved 20 June 2022.
  4. ↑ "NGC 888 on HyperLeda". Retrieved 10 December 2018.
  5. ↑ "Your NED Search Results. Distance Results for NGC 888". NASA/IPAC Extragalactic Database. Retrieved 21 June 2022.
  6. ↑ Soares, D. S. L.; de Souza, R. E.; de Carvalho, R. R.; Couto da Silva, T. C. (1995). "Southern binary galaxies. I. A sample of isolated pairs". Astronomy and Astrophysics Supplement. 110: 371. arXiv:astro-ph/9410092. Bibcode:1995A&AS..110..371S.
  7. ↑ "Results for object ESO 115-G 003". NASA/IPAC Extragalactic Database. Retrieved 20 November 2023.
  8. ↑ Shumkov, V.; Lipunov, V.; Buckley, D.; Podesta, R.; Levato, H.; Gorbovskoy, E.; Tyurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Kuvshinov, D.; Vladimirov, V.; Potter, S.; Kniazev, A.; Budnev, N.; Gress, O.; Ivanov, K.; Lopez, C.; Mallamaci, C.; Lopez, C.; Podesta, F.; Pogrosheva, T. (2016). "MASTER: Bright PSN in NGC 0888". The Astronomer's Telegram. 9396: 1. Bibcode:2016ATel.9396....1S.
  9. ↑ "SN 2016frs". Transient Name Server. IAU. Retrieved 2 March 2026.
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