SP77 46-44

SP77 46-44
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Dorado
Right ascension	05h 29m 42.2038s
Declination	−68° 57′ 17.351″
Apparent magnitude (V)	11.54 (var.)
Characteristics
Evolutionary stage	Red supergiant
Spectral type	M2.5 Ia-Iab
Apparent magnitude (B)	14.04
Apparent magnitude (V)	12.15
Apparent magnitude (R)	10.99
Apparent magnitude (J)	7.922±0.024
Apparent magnitude (H)	7.192±0.047
Apparent magnitude (K)	6.886±0.029
B−V color index	1.89
V−R color index	1.16
J−H color index	0.730
J−K color index	1.036
Variable type	yes
Astrometry
Radial velocity (Rv)	273.0±0.3 km/s
Proper motion (μ)	RA: 1.445 mas/yr ; Dec.: 0.463 mas/yr
Details
Radius	1,278 R☉
Luminosity	221,000 – 251,000 L☉
Surface gravity (log g)	0.5 cgs
Temperature	3,500 K
Other designations
	SP77 46-44, WOH S341, W60 A27, 2MASS J05294221-6857173
Database references
SIMBAD	data

SP77 46-44 (WOH S341) is a red supergiant star found in the Large Magellanic Cloud in the constellation of Dorado. It is one of the largest stars discovered, with a radius over 1,200 solar radii. If placed in our solar system, its photosphere would engulf the orbit of Jupiter.

The apparent magnitude of SP77 46-44 varies by about 0.8 magnitudes around 11.5.^[3] No variable star classification has been assigned.^[10]

Notes[edit]

^ Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:
${\sqrt {(5772/3500)^{4}*220,830}}=1,278.04\ R\odot$

References[edit]

^ Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 16 July 2020.
^ ^a ^b ^c ^d Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ ^a ^b ^c Szczygieł, D. M.; Stanek, K. Z.; Bonanos, A. Z.; Pojmański, G.; Pilecki, B.; Prieto, J. L. (2010). "Variability of Luminous Stars in the Large Magellanic Cloud Using 10 Years of ASAS Data". The Astronomical Journal. 140 (1): 14. arXiv:1001.3410. Bibcode:2010AJ....140...14S. doi:10.1088/0004-6256/140/1/14. S2CID 119108199.
^ González-Fernández, Carlos; Dorda, Ricardo; Negueruela, Ignacio; Marco, Amparo (2015). "A new survey of cool supergiants in the Magellanic Clouds". Astronomy & Astrophysics. 578: A3. arXiv:1504.00003. Bibcode:2015A&A...578A...3G. doi:10.1051/0004-6361/201425362. S2CID 55959019.
^ ^a ^b ^c ^d Massey, Philip; Olsen, K. A. G. (2003). "The Evolution of Massive Stars. I. Red Supergiants in the Magellanic Clouds". The Astronomical Journal. 126 (6): 2867–2886. arXiv:astro-ph/0309272. Bibcode:2003AJ....126.2867M. doi:10.1086/379558. S2CID 119476272.
^ ^a ^b ^c Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.
^ ^a ^b ^c Groenewegen, Martin A. T.; Sloan, Greg C. (2018). "Luminosities and mass-loss rates of Local Group AGB stars and Red Supergiants". Astronomy & Astrophysics. 609: A114. arXiv:1711.07803. Bibcode:2018A&A...609A.114G. doi:10.1051/0004-6361/201731089. ISSN 0004-6361. S2CID 59327105.
^ Davies, Ben; Crowther, Paul A.; Beasor, Emma R. (2018). "The luminosities of cool supergiants in the Magellanic Clouds, and the Humphreys–Davidson limit revisited". Monthly Notices of the Royal Astronomical Society. 478 (3): 3138–3148. arXiv:1804.06417. Bibcode:2018MNRAS.478.3138D. doi:10.1093/mnras/sty1302. S2CID 59459492.
^ "[W60] A27 -- Red supergiant star". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 1 August 2020.
^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1: B/gcvs. Bibcode:2009yCat....102025S.

This supergiant-related article is a stub. You can help Wikipedia by expanding it.

[RadiusCalculationFromTemperatureLuminosity-7] Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:
${\sqrt {(5772/3500)^{4}*220,830}}=1,278.04\ R\odot$

[DJM-2008-1] Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 16 July 2020.

[dr2-2] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[szczygiel2010-3] Szczygieł, D. M.; Stanek, K. Z.; Bonanos, A. Z.; Pojmański, G.; Pilecki, B.; Prieto, J. L. (2010). "Variability of Luminous Stars in the Large Magellanic Cloud Using 10 Years of ASAS Data". The Astronomical Journal. 140 (1): 14. arXiv:1001.3410. Bibcode:2010AJ....140...14S. doi:10.1088/0004-6256/140/1/14. S2CID 119108199.

[rv-4] González-Fernández, Carlos; Dorda, Ricardo; Negueruela, Ignacio; Marco, Amparo (2015). "A new survey of cool supergiants in the Magellanic Clouds". Astronomy & Astrophysics. 578: A3. arXiv:1504.00003. Bibcode:2015A&A...578A...3G. doi:10.1051/0004-6361/201425362. S2CID 55959019.

[massey2003-5] Massey, Philip; Olsen, K. A. G. (2003). "The Evolution of Massive Stars. I. Red Supergiants in the Magellanic Clouds". The Astronomical Journal. 126 (6): 2867–2886. arXiv:astro-ph/0309272. Bibcode:2003AJ....126.2867M. doi:10.1086/379558. S2CID 119476272.

[2mass-6] Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.

[groenewegen2018-8] Groenewegen, Martin A. T.; Sloan, Greg C. (2018). "Luminosities and mass-loss rates of Local Group AGB stars and Red Supergiants". Astronomy & Astrophysics. 609: A114. arXiv:1711.07803. Bibcode:2018A&A...609A.114G. doi:10.1051/0004-6361/201731089. ISSN 0004-6361. S2CID 59327105.

[davies2018-9] Davies, Ben; Crowther, Paul A.; Beasor, Emma R. (2018). "The luminosities of cool supergiants in the Magellanic Clouds, and the Humphreys–Davidson limit revisited". Monthly Notices of the Royal Astronomical Society. 478 (3): 3138–3148. arXiv:1804.06417. Bibcode:2018MNRAS.478.3138D. doi:10.1093/mnras/sty1302. S2CID 59459492.

[SIMBAD-10] "[W60] A27 -- Red supergiant star". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 1 August 2020.

[gcvs-11] Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1: B/gcvs. Bibcode:2009yCat....102025S.

[1]

[2]

[3]

[4]

[5]

[6]

[a]

[7]

[8]

[9]

[10]

Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Dorado^[1]
Right ascension	05^h 29^m 42.2038^s^[2]
Declination	−68° 57′ 17.351″^[2]
Apparent magnitude (V)	11.54 (var.)^[3]
Characteristics
Evolutionary stage	Red supergiant
Spectral type	M2.5 Ia-Iab^[4]
Apparent magnitude (B)	14.04^[5]
Apparent magnitude (V)	12.15^[5]
Apparent magnitude (R)	10.99^[5]
Apparent magnitude (J)	7.922±0.024^[6]
Apparent magnitude (H)	7.192±0.047^[6]
Apparent magnitude (K)	6.886±0.029^[6]
B−V color index	1.89
V−R color index	1.16
J−H color index	0.730
J−K color index	1.036
Variable type	yes^[3]
Astrometry

Radial velocity (R_v)	273.0±0.3^[5] km/s
Proper motion (μ)	RA: 1.445^[2] mas/yr Dec.: 0.463^[2] mas/yr

Details

Radius	1,278^[a] `R`_☉
Luminosity	221,000^[7] – 251,000^[8] `L`_☉
Surface gravity (log g)	0.5^[7] cgs
Temperature	3,500^[7] K

Other designations
SP77 46-44, WOH S341, W60 A27, 2MASS J05294221-6857173^[9]
Database references
SIMBAD	data