NGC 4349-127

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
Distance7,097 ly
(2,176 pc)
Spectral typeM III
Other designations
TYC 8975-2606-1 , NGC4349-127 , NGC 4349 MMU 127 , GSC 08975-02606
Database references
SIMBADdata

NGC 4349-127 is a probable red giant 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.

Planetary system

NGC 4349-127 b is a brown dwarf (based on its mass) 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 the 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 planetary system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b >19.8 MJ 2.38 677.8 ± 6.2 0.19 ± 0.07 — —

See also

References

  1. 1 2 Lovis C, Mayor M. (2007) Planets around evolved intermediate-mass stars I. Two substellar companions in the open clusters NGC 2423 and NGC 4349. Astronomy & Astrophysics, 472: 657-664.

External links


This article is issued from Wikipedia - version of the Friday, January 22, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.