J Centauri

J Centauri
	Location of J Centauri (circled in red)
Observation data; Epoch J2000.0 Equinox ICRS
Constellation	Centaurus
Right ascension	13h 22m 37.9331s
Declination	−60° 59′ 18.170″
Apparent magnitude (V)	+4.505
Characteristics
Evolutionary stage	main sequence
Spectral type	B3V
U−B color index	−0.62
B−V color index	−0.13
Astrometry
Radial velocity (Rv)	+6.0 km/s
Proper motion (μ)	RA: −29.518 mas/yr ; Dec.: −21.698 mas/yr
Parallax (π)	8.8824±0.1293 mas
Distance	367 ± 5 ly ; (113 ± 2 pc)
Absolute magnitude (MV)	−0.66
Details
Mass	4.1 M☉
Radius	3.6 R☉
Luminosity	265 L☉
Surface gravity (log g)	3.97 cgs
Temperature	24,757 K
Rotational velocity (v sin i)	223 km/s
Age	15.4 Myr
Other designations
	HR 5035, HD 116087, CD−60°4640, FK5 1347, HIP 65271, SAO 252284, GC 18087, CCDM J13226-6059
Database references
SIMBAD	data

J Centauri (J Cen) is a star in the constellation Centaurus. Its mean apparent magnitude is 4.5, making it easily visible to the naked eye. It is approximately 350 light years from Earth.

J Centauri is a spectral class B3V main sequence star with a luminosity 265 times that of the Sun. The temperature of the star's photosphere is nearly 25,000 K. The rotation velocity at the equator is at least 223 km/s. It is believed to be a binary star system.

This star may be a member of the Scorpio-Centaurus OB association (Sco OB2). This is one of the nearest regions of recent star formation.

References

1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
1 2 3 4 5 6 7 8 9 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
1 2 "CCDM J13226-6059AB -- Double or multiple star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-09-08.
↑ Hiltner, W. A.; Garrison, R. F.; Schild, R. E. (July 1969). "MK Spectral Types for Bright Southern OB Stars". The Astrophysical Journal. 157: 313. Bibcode:1969ApJ...157..313H. doi:10.1086/150069.
1 2 Landolt, Arlo U. (August 1969). "UBV Observations of Selected Double Systems, II". Publications of the Astronomical Society of the Pacific. 81 (481): 443–446. Bibcode:1969PASP...81..443L. doi:10.1086/128801.
↑ Jilinski, E.; Daflon, S.; Cunha, K.; de La Reza, R. (March 2006). "Radial velocity measurements of B stars in the Scorpius–Centaurus association". Astronomy and Astrophysics. 448 (3): 1001–1006. arXiv:astro-ph/0601643. Bibcode:2006A&A...448.1001J. doi:10.1051/0004-6361:20041614. S2CID 17818058.
1 2 3 Quintana, Alexis L.; Wright, Nicholas J.; Martínez García, Juan (2025). "A census of OB stars within 1 KPC and the star formation and core collapse supernova rates of the Milky Way". Monthly Notices of the Royal Astronomical Society. 538 (3): 1367. arXiv:2503.08286. Bibcode:2025MNRAS.538.1367Q. doi:10.1093/mnras/staf083.
1 2 Wolff, S. C.; et al. (2007). "Rotational Velocities for B0-B3 Stars in Seven Young Clusters: Further Study of the Relationship between Rotation Speed and Density in Star-Forming Regions". The Astronomical Journal. 133 (3): 1092–1103. arXiv:astro-ph/0702133. Bibcode:2007AJ....133.1092W. doi:10.1086/511002. S2CID 119074863.
↑ Gratton, R.; Squicciarini, V.; Nascimbeni, V.; Janson, M.; Reffert, S.; Meyer, M.; Delorme, P.; Mamajek, E. E.; Bonavita, M.; Desidera, S.; Mesa, D.; Rigliaco, E.; d'Orazi, V.; Vigan, A.; Lazzoni, C.; Chauvin, G.; Langlois, M. (2023). "Multiples among B stars in the Scorpius-Centaurus association". Astronomy and Astrophysics. 678: A93. arXiv:2308.09962. Bibcode:2023A&A...678A..93G. doi:10.1051/0004-6361/202346806.
↑ Shatsky, N.; Tokovinin, A. (2002). "The mass ratio distribution of B-type visual binaries in the Sco OB2 association". Astronomy and Astrophysics. 382: 92–103. arXiv:astro-ph/0109456. Bibcode:2002A&A...382...92S. doi:10.1051/0004-6361:20011542. S2CID 16697655.
↑ Lub, J.; de Geus, E. J.; van de Grift, E. (October 1990). "Walraven photometry of nearby southern OB associations". Astronomy and Astrophysics Supplement Series. 85 (2): 915–970. Bibcode:1990A&AS...85..915D.

[xhip-1] 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.

[dr3-2] 1 2 3 4 5 6 7 8 9 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[SIMBAD-3] 1 2 "CCDM J13226-6059AB -- Double or multiple star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-09-08.

[4] Hiltner, W. A.; Garrison, R. F.; Schild, R. E. (July 1969). "MK Spectral Types for Bright Southern OB Stars". The Astrophysical Journal. 157: 313. Bibcode:1969ApJ...157..313H. doi:10.1086/150069.

[pasp81-5] 1 2 Landolt, Arlo U. (August 1969). "UBV Observations of Selected Double Systems, II". Publications of the Astronomical Society of the Pacific. 81 (481): 443–446. Bibcode:1969PASP...81..443L. doi:10.1086/128801.

[6] Jilinski, E.; Daflon, S.; Cunha, K.; de La Reza, R. (March 2006). "Radial velocity measurements of B stars in the Scorpius–Centaurus association". Astronomy and Astrophysics. 448 (3): 1001–1006. arXiv:astro-ph/0601643. Bibcode:2006A&A...448.1001J. doi:10.1051/0004-6361:20041614. S2CID 17818058.

[quintana2025-7] 1 2 3 Quintana, Alexis L.; Wright, Nicholas J.; Martínez García, Juan (2025). "A census of OB stars within 1 KPC and the star formation and core collapse supernova rates of the Milky Way". Monthly Notices of the Royal Astronomical Society. 538 (3): 1367. arXiv:2503.08286. Bibcode:2025MNRAS.538.1367Q. doi:10.1093/mnras/staf083.

[apj133-8] 1 2 Wolff, S. C.; et al. (2007). "Rotational Velocities for B0-B3 Stars in Seven Young Clusters: Further Study of the Relationship between Rotation Speed and Density in Star-Forming Regions". The Astronomical Journal. 133 (3): 1092–1103. arXiv:astro-ph/0702133. Bibcode:2007AJ....133.1092W. doi:10.1086/511002. S2CID 119074863.

[9] Gratton, R.; Squicciarini, V.; Nascimbeni, V.; Janson, M.; Reffert, S.; Meyer, M.; Delorme, P.; Mamajek, E. E.; Bonavita, M.; Desidera, S.; Mesa, D.; Rigliaco, E.; d'Orazi, V.; Vigan, A.; Lazzoni, C.; Chauvin, G.; Langlois, M. (2023). "Multiples among B stars in the Scorpius-Centaurus association". Astronomy and Astrophysics. 678: A93. arXiv:2308.09962. Bibcode:2023A&A...678A..93G. doi:10.1051/0004-6361/202346806.

[10] Shatsky, N.; Tokovinin, A. (2002). "The mass ratio distribution of B-type visual binaries in the Sco OB2 association". Astronomy and Astrophysics. 382: 92–103. arXiv:astro-ph/0109456. Bibcode:2002A&A...382...92S. doi:10.1051/0004-6361:20011542. S2CID 16697655.

[11] Lub, J.; de Geus, E. J.; van de Grift, E. (October 1990). "Walraven photometry of nearby southern OB associations". Astronomy and Astrophysics Supplement Series. 85 (2): 915–970. Bibcode:1990A&AS...85..915D.