MOA-2007-BLG-192Lb
Template:Short description Script error: No such module "infobox".Script error: No such module "Check for unknown parameters". MOA-2007-BLG-192Lb, occasionally shortened to MOA-192 b,[1] is an extrasolar planet approximately 7,000 light-years away in the constellation of Sagittarius. The planet was discovered orbiting the low-mass star MOA-2007-BLG-192L. It was found when it caused a gravitational microlensing event on May 24, 2007, which was detected as part of the MOA-II microlensing survey at the Mount John University Observatory in New Zealand.[2]
The mass of the planet is not well-known. It is anything between 2.75 and 105 Earth masses (Template:Earth mass), although it is more likely to be between Template:Earth mass. The mass range also means that the planet's classification varies, from a Super-Earth to a Sub-Saturn. It is located at 2.02 astronomical units from its host star.[3]
Host star
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | SagittariusTemplate:Efn |
| Right ascension | Template:RA[3] |
| Declination | Template:DEC[3] |
| Characteristics | |
| Evolutionary stage | Red dwarf |
| Spectral type | M[3] |
| Astrometry | |
| Distance | Script error: No such module "val". ly (Script error: No such module "val". pc)[3] |
| Details | |
| Mass | Script error: No such module "val".[3] Template:Solar mass |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Database references | |
| SIMBAD | data |
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MOA-2007-BLG-192L is a red dwarf star, one of the smallest and least massive type of stars, as well as one of the most numerous in the Milky Way.[4] It was initially estimated to have a mass 6% the mass of the Sun, which would probably be too low to sustain nuclear fusion at its core, making it a dimly glowing brown dwarf.[5] However, this mass was based on an erroneous parallax, and a further analysis suggest a higher mass of Template:Solar mass. This would make it a red dwarf.[3]
Both MOA-2007-BLG-192L and its planet are located at a distance of Script error: No such module "convert". from Earth,[3] in the direction of the constellation Sagittarius.Template:Efn
Notes
References
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- ↑ Planet Quest: New Worlds Atlas Template:Webarchive, JPL. Accessed on line July 2, 2008.
- ↑ Script error: No such module "Citation/CS1".
- ↑ a b c d e f g h Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Smallest Extrasolar Planet Portends Other Earths Template:Webarchive, Richard A. Kerr, ScienceNOW Daily News, June 2, 2008. Accessed on line June 16, 2008.
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External links
- Script error: No such module "citation/CS1".