- NGC 4349-127
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NGC 4349-127 Observation data
Epoch J2000.0 Equinox J2000.0 (ICRS)Constellation Crux Right ascension 12h 24m 08s Declination −61° 52′ 18″ Apparent magnitude (V) +7.4 Absolute magnitude (V) −4.3 Distance 7,097 ly
(2,176 pc)Spectral type M III Other designations Database references SIMBAD data NGC 4349-127 is a probable red giant star approximately 7,097 light-years away in the constellation of Crux. As a member of the open cluster NGC 4349 (hence the name NGC 4349-127), it is located about 2000 parsecs (about 6500 light years) from the Sun.[1] Its mass is estimated at 3.9 times Solar, and its age is about 200 million years.[1] In 2007, this star was found to have a substellar companion, probably a brown dwarf.
Contents
Planetary system
NGC 4349-127 b is a large gas giant or brown dwarf with nearly 20 times the mass of Jupiter. Within an eccentricity of about 0.19, its orbit is moderately elliptical, about the same as Mercury in our own Solar System. It orbits its host star at a distance of 2.38 AU in a period of 677.8 days.
This object was discovered by Christophe Lovis and Michel Mayor of the Geneva Observatory using the radial velocity technique.
The NGC 4349-127 system Companion
(in order from star)Mass Semimajor axis
(AU)Orbital period
(days)Eccentricity b >19.8 MJ 2.38 677.8 ± 6.2 0.19 ± 0.07 References
- C. Lovis and M. Mayor (2007). "Planets around evolved intermediate-mass stars I. Two substellar companions in the open clusters NGC 2423 and NGC 4349". Astronomy & Astrophysics 472 (2): 657–664. Bibcode 2007A&A...472..657L. doi:10.1051/0004-6361:20077375. http://www.aanda.org/index.php?option=article&access=standard&Itemid=129&url=/articles/aa/abs/2007/35/aa7375-07/aa7375-07.html.
External links
- "Notes for star NGC 4349 No 127". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/star.php?st=NGC+4349+No+127.
- SIMBAD NGC 4349 127b
See also
Categories:- Crux constellation
- Red giant stars
- Brown dwarfs
- Giant star stubs
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