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NGC 5516

Coordinates: Sky map 14h 15m 54.7000s, −48° 06′ 53.257″
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NGC 5516
NGC 5516 imaged by SDSS
Observation data (J2000 epoch)
ConstellationCentaurus
Right ascension14h 15m 54.7000s[1]
Declination−48° 06′ 53.257″[1]
Redshift0.013753±0.0000670[1]
Heliocentric radial velocity4,123±20 km/s[1]
Distance226.68 ± 13.74 Mly (69.500 ± 4.212 Mpc)[1]
Group or clusterLDC 1050[2]
Apparent magnitude (V)13.00[1]
Characteristics
TypeSA0-(s)[1]
Size~232,300 ly (71.21 kpc) (estimated)[1]
Apparent size (V)1.8′ × 1.2′[1]
Other designations
ESO 221- G 034, 2MASX J14155467-4806535, PGC 50960[1]

NGC 5516 is a lenticular galaxy in the constellation of Centaurus. Its velocity with respect to the cosmic microwave background is 4,328±25 km/s, which corresponds to a Hubble distance of 208.2 ± 14.6 Mly (63.83 ± 4.49 Mpc).[1] However, three non-redshift measurements give a farther mean distance of 226.68 ± 13.74 Mly (69.500 ± 4.212 Mpc).[3] It was discovered by British astronomer John Herschel on 1 July 1834.[4]

NGC 5516 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[2][5]

LDC 1050 Group

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NGC 5516 is a member of a group of galaxies known as LDC 1050. This group contains six galaxies, including ESO 221-33 [d], ESO 271-26 [d], ESO 221-37 [d], 6dFGS gJ141604.6-480738 [d], and 2MASX J14143086-4826542 [d].[6][7]

Supernovae

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Two supernovae have been observed in NGC 5516:

  • AT 2017kdz (also known as MASTER OT J141551.21-480802.6) (Type Ia, mag. 16.4) was discovered by MASTER robotic Net on 9 April 2017.[8][9][10]
  • SN 2026dez (Type Ia, mag. 18.642) was discovered by ATLAS on 14 February 2026.[11] This supernova has a significant projected separation of 110 kly (34 kpc) from NGC 5516.[12]

See also

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References

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  1. ^ a b c d e f g h i j k "Results for object NGC 5516". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 17 February 2026.
  2. ^ a b "NGC 5516". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 17 February 2026.
  3. ^ "Distance Results for NGC 5516". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 17 February 2026.
  4. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 5516". Celestial Atlas. Retrieved 17 February 2026.
  5. ^ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D.; Davies, R. I.; Hönig, S. F.; Ricci, C.; Rosario, D. J.; Salvato, M.; Shankar, F.; Stern, D. (2020). "Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 MPC". Monthly Notices of the Royal Astronomical Society. 494 (2): 1784. arXiv:2003.05959. Bibcode:2020MNRAS.494.1784A. doi:10.1093/mnras/staa766.
  6. ^ Crook, Aidan C.; Huchra, John P.; Martimbeau, Nathalie; Masters, Karen L.; Jarrett, Tom; Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. 655 (2): 790–813. arXiv:astro-ph/0610732. Bibcode:2007ApJ...655..790C. doi:10.1086/510201.
  7. ^ "[CHM2007] LDC 1050". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 17 February 2026.
  8. ^ Pogrosheva, T.; Lipunov, V.; Podesta, R.; Levato, H.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A.; Kornilov, V.; Chazov, V.; Vlasenko, D.; Vladimirov, V.; Gress, O.; Shumkov, V.; Gorbunov, I.; Krylov, A.; Lopez, C.; Podesta, F.; Saffe, C.; Gabovich, A. (2017). "Master-Oafa PSN in NGC5516". The Astronomer's Telegram. 10287: 1. Bibcode:2017ATel10287....1P.
  9. ^ Prieto, J. L.; Dong, S. (2017). "Spectroscopic Classification of MASTER OT J141551.21-480802.6 as a SN Ia". The Astronomer's Telegram. 10347: 1. Bibcode:2017ATel10347....1P.
  10. ^ "AT 2017kdz". Transient Name Server. IAU. Retrieved 17 February 2026.
  11. ^ "SN 2026dez". Transient Name Server. IAU. Retrieved 17 February 2026.
  12. ^ Smith, K. W.; Young, D. R.; Nicholl, M. (2026). "ATLAS26bty (AT2026dez): discovery of a rising transient 34 kpc offset from NGC 5516 (60 Mpc)". Transient Name Server Astronote. 35: 1. Bibcode:2026TNSAN..35....1S.
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