HD 268835 information

HD 268835
Observation data; Epoch J2000 Equinox J2000
Constellation	Mensa
Right ascension	04h 56m 47.0791s
Declination	−69° 50′ 24.792″
Apparent magnitude (V)	10.6
Characteristics
Spectral type	B8Iae
U−B color index	-0.66
B−V color index	0.14
Variable type	LBV?
Astrometry
Radial velocity (Rv)	278 km/s
Proper motion (μ)	RA: 1.63 mas/yr ; Dec.: -2.38 mas/yr
Absolute magnitude (MV)	-8.5
Details
Mass	<30 M☉
Radius	131 R☉
Luminosity	320,000 L☉
Temperature	12,000 K
Other designations
	HD 268835, HIP 22989, CD-70°273
Database references
SIMBAD	data

HD 268835 (or R66) (30 SM) is one of two stars that were identified by NASA's Spitzer Space Telescope in the Milky Way's nearest neighbor galaxy, the Large Magellanic Cloud (the other being R 126 or HD 37974), as being circled by monstrous dust disks that are theorised to be the origin of planets.

^ ^a ^b ^c ^d ^e Stahl, O.; Wolf, B.; Zickgraf, F.-J.; Leitherer, C.; Bastian, U.; de Groot, M. J. H. (April 1983). "R 66(Aeq) - an LMC B supergiant with a massive cool and dusty wind". Astronomy and Astrophysics. 120 (2): 287–296. Bibcode:1983A&A...120..287S.
^ Kastner, J. H.; Thorndike, S. L.; Romanczyk, P. A.; Buchanan, C. L.; Hrivnak, B. J.; Sahai, R.; Egan, M. (2008). "The Large Magellanic Cloud's Top 250: Classification of the Most Luminous Compact 8 μm Sources in the Large Magellanic Cloud". The Astronomical Journal. 136 (3): 1221–1241. arXiv:astro-ph/0703584. Bibcode:2008AJ....136.1221K. doi:10.1088/0004-6256/136/3/1221. S2CID 117820349.
^ ^a ^b ^c ^d Kastner, J. H.; Buchanan, C. L.; Sargent, B.; Forrest, W. J. (2006). "SpitzerSpectroscopy of Dusty Disks around B[e] Hypergiants in the Large Magellanic Cloud". The Astrophysical Journal. 638 (1): L29–L32. Bibcode:2006ApJ...638L..29K. doi:10.1086/500804.

[stahl-1] Stahl, O.; Wolf, B.; Zickgraf, F.-J.; Leitherer, C.; Bastian, U.; de Groot, M. J. H. (April 1983). "R 66(Aeq) - an LMC B supergiant with a massive cool and dusty wind". Astronomy and Astrophysics. 120 (2): 287–296. Bibcode:1983A&A...120..287S.

[kastner-2] Kastner, J. H.; Thorndike, S. L.; Romanczyk, P. A.; Buchanan, C. L.; Hrivnak, B. J.; Sahai, R.; Egan, M. (2008). "The Large Magellanic Cloud's Top 250: Classification of the Most Luminous Compact 8 μm Sources in the Large Magellanic Cloud". The Astronomical Journal. 136 (3): 1221–1241. arXiv:astro-ph/0703584. Bibcode:2008AJ....136.1221K. doi:10.1088/0004-6256/136/3/1221. S2CID 117820349.

[kastneretal-3] Kastner, J. H.; Buchanan, C. L.; Sargent, B.; Forrest, W. J. (2006). "SpitzerSpectroscopy of Dusty Disks around B[e] Hypergiants in the Large Magellanic Cloud". The Astrophysical Journal. 638 (1): L29–L32. Bibcode:2006ApJ...638L..29K. doi:10.1086/500804.

Observation data Epoch J2000 Equinox J2000
Constellation	Mensa
Right ascension	04^h 56^m 47.0791^s
Declination	−69° 50′ 24.792″
Apparent magnitude (V)	10.6^[1]
Characteristics
Spectral type	B8Iae^[2]
U−B color index	-0.66^[1]
B−V color index	0.14^[1]
Variable type	LBV?^[1]
Astrometry

Radial velocity (R_v)	278 km/s
Proper motion (μ)	RA: 1.63 mas/yr Dec.: -2.38 mas/yr
Absolute magnitude (M_V)	-8.5^[1]

Details

Mass	<30^[3] `M`_☉
Radius	131^[3] `R`_☉
Luminosity	320,000^[3] `L`_☉
Temperature	12,000^[3] K

Other designations
HD 268835, HIP 22989, CD-70°273
Database references
SIMBAD	data

HD 268835 information

and 16 Related for: HD 268835 information

HD 268835

Hypergiant

List of exoplanet extremes

HD 37974

R66

Alpha Cygni variable

List of stars in Mensa

Xi Mensae

Gamma Mensae

Eta Mensae

Zeta Mensae

Delta Mensae

Mu Mensae

Beta Mensae

Lambda Mensae

AO Mensae