Planet GJ 229 B
| Name | GJ 229 B | ||
| Planet Status | Confirmed | ||
| Discovered in | 1995 | ||
| Mass | 35.0 ( -15.0 +15.0 ) MJ |  |
|
| Mass*sin(i) | 1.61971 (± 0.664) MJ | |
|
| Semi-Major Axis | 19.433 ( -6.9 +4.7 ) AU | |
|
| Orbital Period | 52890.0 ( -24055.0 +19639.0 ) day | |
|
| Eccentricity | 0.03 ( -0.03 +0.2 ) | |
|
| ω | 180.0 (± 180.0) deg | |
|
| Tperi | — | ||
| Radius | — | ||
| Inclination | — | ||
| Update | 2020-01-09 | ||
| Detection Method | Imaging | ||
| Mass Detection Method | Spectrum | ||
| Radius Detection Method | — | ||
| Primary transit | — | ||
| Secondary transit | — | ||
| λ | — | ||
| Impact Parameter b | — | ||
| Time Vr=0 | — | ||
| Velocity Semiamplitude K | 17.06 ( -5.2 +1.3 ) m/s | |
|
| Calculated temperature | 1200.0 ( -1200.0 +0.0 ) K | |
|
| Measured temperature | — | ||
| Hottest point longitude | — | ||
| Geometric albedo | — | ||
| Surface gravity log(g/gH) | — | ||
| Alternate Names | Gliese 229 B |
Star
GJ 229| Name | GJ 229 | ||
| Distance | 5.757 (± 0.0004) pc | ||
| Spectral type | M1 V | ||
| Apparent magnitude V | 8.125 | ||
| Mass | 0.58 MSun | |
+ |
| Age | — | ||
| Effective temperature | 3564.0 K | |
|
| Radius | — | ||
| Metallicity [Fe/H] | — | ||
| Detected Disc | — | ||
| Magnetic Field | — | ||
| RA2000 | 06:10:34.6 | ||
| Dec2000 | -21:51:53 | ||
| Alternate Names | |||
| Planetary system | 3 planets |
Remarks
Gliese 229 is a binary system : Gliese 229 A is a red dwarf with a planet Gliese 229 A b. Gliese 229 B is a brown dwarfMore data
- Simbad
- Most recent references (ADS)
Related publications
Search for Nearby Earth Analogs. II. detection of five new planets, eight planet candidates, and confirmation of three planets around nine nearby M dwarfs
2020
FENG F., BUTLER P., SHECTMAN S., CRANE J., VOGT S. et al.
ApJ. Suppl., 246, 11
paper arxiv
Physical Properties of Gliese 229B Based on Newly Determined Carbon and Oxygen Abundances of Gliese 229A
2015
NAKAJIMA T., TSUJI T. & TAKEDA Y.
Astron. J., 150, 53
paper arxiv
ADS
Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics
2014
TUOMI M., JONES H., BARNES J., ANGLADA-ESCUDE G. & JRNKINS J.
MNRAS, 441, 1545
paper arxiv
Discovery of a cool brown dwarf
1995
NAKAJIMA T., OPPENHEIMER B. R., KULKARNI S. R., GOLIMOWSKI D. A.,
MATTHEWS K. & DURRANCE S. T.
Nature, 378, 463
paper
