SP77 46-44

SP77 46-44 is a red supergiant found in the LMC (Large Magellanic Cloud). It is one of the largest stars discovered, with a radius of around 1,259 solar radii.[3] If placed in our solar system, it's photosphere would engulf the orbit of Jupiter. This star is also known as WOH S341.[2]

SP77 46-44
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Dorado[1]
Right ascension  05h 29m 42.2038351784s[2]
Declination −68° 57′ 17.351444426″[2]
Apparent magnitude (V) 12.15[2]
Characteristics
Evolutionary stage Red supergiant
Spectral type M2.5Ia-Iab[2]
Apparent magnitude (B) 14.04[2]
Apparent magnitude (V) 12.15[2]
Apparent magnitude (R) 10.99[2]
Apparent magnitude (J) 7.922±0.024[2]
Apparent magnitude (H) 7.192±0.047[2]
Apparent magnitude (K) 6.886±0.029[2]
B−V color index 1.89
V−R color index 1.16
J−H color index 0.730
J−K color index 1.036
Astrometry
Radial velocity (Rv)273.0±0.3[2] km/s
Proper motion (μ) RA: 1.445[2] mas/yr
Dec.: 0.463[2] mas/yr
Details
Radius1,259[3] R☉
Other designations
SP77 46-44, WOH S 341, [W60] A27, 2MASS J05294221-6857173[2]
Database references
SIMBADdata

References
  1. Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 16 July 2020.
  2. "[W60] A27 -- Red supergiant star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 1 August 2020.
  3. Van Loon, J. Th.; Cioni, M.-R. L.; Zijlstra, A. A.; Loup, C. (2005). "An empirical formula for the mass-loss rates of dust-enshrouded red supergiants and oxygen-rich Asymptotic Giant Branch stars". Astronomy and Astrophysics. 438 (1): 273–289. arXiv:astro-ph/0504379. Bibcode:2005A&A...438..273V. doi:10.1051/0004-6361:20042555.


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