23 Librae
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| Observation data Epoch 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 | |
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HD 134987
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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
| Orbital elements | ||
|---|---|---|
| Semi-major axis | (a) | 0.78 AU |
| Eccentricity | (e) | 0.24 |
| Orbital period | (P) | 260 d |
| Inclination | (i) | ?° |
| Longitude of periastron |
(ω) | 6° |
| Time of periastron | (τ) | 69.67 JD |
| Physical characteristics | ||
| Mass | 1.58 MJ | |
| Radius | 1.015 RJ | |
| Density | ? kg/m³ | |
| Temperature | 315 K | |
| Discovery | ||
| Discovery date | 1999 | |
| Detection method(s) | ||
| Discoverer(s) | Marcy et al. | |
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.
[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)
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