HD 141937
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Libra |
| Right ascension | 15h 52m 17.5474s |
| Declination | −18º 26' 09.8341″ |
| Apparent magnitude (V) | 7.25 |
| Absolute magnitude (V) | 4.62 |
| Distance | 109 ly (33.5 pc) |
| Spectral type | G2/G3V |
| Other designations | |
HD 141937 is a star in the constellation Libra at a distance of 109 ly away. The apparent magnitude is 7.25, which is not visible to pure human eye. It is classified as a yellow dwarf similar to our Sun. Its mass is exactly the same as our Sun with 1 solar mass and slightly larger in radius of 1.06 times solar. It has younger age than our Sun by a factor of 1.79.
The star has a single planetary system.
Contents |
[edit] HD 141937 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 1.52 AU |
| Eccentricity | (e) | 0.41±0.01 |
| Orbital period | (P) | 653.2±1.2 d |
| Angular distance | (θ) | 45.4 mas |
| Longitude of periastron |
(ω) | 187.72±0.8° |
| Time of periastron | (T0) | 2,451,847.4±2.0 JD |
| Semi-amplitude | (K) | 234.5±6.4 m/s |
| Physical characteristics | ||
| Mass | (m) | >9.68 MJ |
| Discovery information | ||
| Discovery date | August 19, 2002 | |
| Discoverer(s) | Udry et al. | |
| Detection method | radial velocity | |
| Discovery site | California, United States | |
| Discovery status | Published | |
HD 141937 b is an extrasolar planet discovered in 2002 with mass of 9.7 times Jupiter. The mass is minimum since the inclination of the orbit is unknown, which will probably be a brown dwarf instead if the true mass is known. 653-day orbit would place the distance one and a half times farther away from the star as Earth is from the Sun with high eccentricity of 41%.
[edit] References
- Udry et al. (2002). "The CORALIE survey for southern extra-solar planets VIII. The very low-mass companions of HD141937, HD162020, HD168443, HD202206: brown dwarfs or superplanets?". Astron. & Astrophys. 390: 267–279.
[edit] See also
[edit] External links
- HD 141937 -- Star. SIMBAD Astronomical Database. Retrieved on December 12, 2007.
- HD 141937b -- Extra-solar Planet Candidate. SIMBAD Astronomical Database. Retrieved on December 12, 2007.
- Notes for star HD 141937. The Extrasolar Planets Encyclopaedia. Retrieved on December 12, 2007.
- Notes for planet HD 141937 b. The Extrasolar Planets Encyclopaedia. Retrieved on December 12, 2007.
- HD 141937 -- Yellow Main Sequence Star. Extrasolar Visions. Retrieved on December 12, 2007.
- HD 141937 B -- Water Cloud Jovian, Eccentric. Extrasolar Visions. Retrieved on December 12, 2007.
- Star Table. Catalog of Nearby Exoplanets. Retrieved on December 12, 2007.
- Planet Table. Catalog of Nearby Exoplanet. Retrieved on December 12, 2007.
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