23 Librae
From Wikipedia, the free encyclopedia
| Observation data Equinox J2000.0 |
|
|---|---|
| Constellation | Libra |
| Right ascension | 15h 13m 28s |
| Declination | -25° 18' 33" |
| Apparent magnitude (V) | 6.45 |
| Distance | 81 ly (25 pc) |
| Spectral type | G5V |
| Other designations | |
|
HD 134987
|
|
23 Librae (23 Lib) is a yellow dwarf star in the constellation Libra. 23 Lib has a mass of 1.05 suns and a radius of 1.25 suns. In 1999 an exoplanet was announced orbiting 23 Lib.
Contents |
[edit] Planet
[edit] 23 Librae b
| Extrasolar planet | Lists of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 0.820±0.047 AU |
| Eccentricity | (e) | 0.243±0.011 |
| Orbital period | (P) | 258.31±0.16 d |
| Inclination | (i) | ?° |
| Longitude of periastron |
(ω) | 358.3±3.7° |
| Time of periastron | (τ) | 2,450,331.7±2.2 JD |
| Physical characteristics | ||
| Mass | (m) | >1.62±0.13 MJ |
| Radius | (r) | ? RJ |
| Density | (ρ) | ? kg/m3 |
| Temperature | (T) | ? K |
| Discovery information | ||
| Discovery date | 1999 | |
| Discoverer(s) | Vogt et al. | |
| Detection method | Radial velocity | |
| Discovery status | Published | |
23 Librae b (23 Lib b) is an extrasolar jovian planet discovered in 1999 orbiting the star 23 Librae. It orbits in its star's habitable zone, with temperatures similar to Venus.
[edit] References
- Vogt et al. (2000). "Six New Planets from the Keck Precision Velocity Survey". The Astrophysical Journal 536: 902-914.
- Butler, R. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646: 505 – 522. (web Preprint)
[edit] External links
- HD 134987 -- High proper-motion Star (SIMBAD Query Result)
- Star: HD 134987 (EPE)
- 23 Librae (Extrasolar Visions)
- 23 Librae b (Extrasolar Visions)
 |
This main sequence star-related article is a stub. You can help Wikipedia by expanding it. |
 |
This extrasolar planet related article is a stub. You can help Wikipedia by expanding it. |
