MOA-2011-BLG-262L

MOA-2011-BLG-262L
	; Artist's impression showing the two models of the MOA-2011-BLG-262L system
Observation data; Epoch J2000 Equinox J2000
Constellation	Sagittarius
Right ascension	18h 00m 23.48s
Declination	−31° 14′ 42.93″
Astrometry
Distance	~1,800 or ~23,000 ly ; (~560 or ~7,200 pc)
Details
Mass	0.11+0.21; −0.06 or 0.003 M☉
Mass	115.2327 or 3.6+2.0; −1.7 MJup
Database references
SIMBAD	data

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MOA-2011-BLG-262L is an astronomical object of uncertain nature with an orbiting companion, detected through the gravitational microlensing event MOA-2011-BLG-262 in the constellation Sagittarius. Two different models fit the observation equally well - an object of ~3.2 M_J, likely a rogue planet, at a distance of about 0.56 kiloparsecs (1,800 light-years) and orbited by a ~0.47 M_🜨 exomoon; or an object of ~0.11 M_☉, likely a red dwarf star, at a distance of about 7.2 kiloparsecs (23,000 light-years) in the galactic bulge, and orbited by a ~17 M_🜨 planet. The discovery team considers the latter scenario to be more likely, but the former is a better fit.^[2]^[3]

Planetary system

The MOA-2011-BLG-262L planetary system^[2]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	18+28 −10 or 0.54+0.30 −0.19 $M$ _🜨	0.84+0.25 −0.14 or 0.13+0.06 −0.04	—	—	—	—

References

^ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
^ ^a ^b ^c ^d ^e ^f Bennett, D.P.; Batista, V.; et al. (13 December 2013). "A Sub-Earth-Mass Moon Orbiting a Gas Giant Primary or a High Velocity Planetary System in the Galactic Bulge". The Astrophysical Journal. 785 (2): 155. arXiv:1312.3951. Bibcode:2014ApJ...785..155B. doi:10.1088/0004-637X/785/2/155. S2CID 118327512.
^ Clavin, Whitney (10 April 2014). "Faraway Moon or Faint Star? Possible Exomoon Found". NASA. Archived from the original on 12 April 2014. Retrieved 19 February 2023.

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

[1] "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.

[Bennett2014-2] ^ ^a ^b ^c ^d ^e ^f Bennett, D.P.; Batista, V.; et al. (13 December 2013). "A Sub-Earth-Mass Moon Orbiting a Gas Giant Primary or a High Velocity Planetary System in the Galactic Bulge". The Astrophysical Journal. 785 (2): 155. arXiv:1312.3951. Bibcode:2014ApJ...785..155B. doi:10.1088/0004-637X/785/2/155. S2CID 118327512.

[NASA-20140410-3] Clavin, Whitney (10 April 2014). "Faraway Moon or Faint Star? Possible Exomoon Found". NASA. Archived from the original on 12 April 2014. Retrieved 19 February 2023.

[1]

[2]

[3]

Observation data Epoch J2000 Equinox J2000
Artist's impression showing the two models of the MOA-2011-BLG-262L system
Constellation	Sagittarius^[1]
Right ascension	18^h 00^m 23.48^s^[2]
Declination	−31° 14′ 42.93″^[2]
Astrometry

Distance	~1,800 or ~23,000 ly (~560 or ~7,200^[2] pc)

Details^[2]

Mass	0.11+0.21 −0.06 or 0.003 `M`_☉
Mass	115.2327 or 3.6+2.0 −1.7 M_Jup

Database references
SIMBAD	data