HD 168443 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HD 168443 | |
| Constellation | Serpens | |
| Right ascension | (α) | 18h 20m 03.9316s |
| Declination | (δ) | −09° 35′ 44.601″ |
| Apparent magnitude | (mV) | 6.92 |
| Distance | 123.5 ly (37.88 pc) | |
| Spectral type | G5IV | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.29 AU |
| Periastron | (q) | 0.14 AU |
| Apastron | (Q) | 0.44 AU |
| Eccentricity | (e) | 0.529 ± 0.02 |
| Orbital period | (P) | 58.116 ± 0.001 d (0.15911 y) |
| Argument of periastron |
(ω) | 172.9° |
| Time of periastron | (T0) | 2,451,616.36 ± 0.02 JD |
| Semi-amplitude | (K) | 475.9 ± 1.6 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 7.696 ± 0.015[1] MJ (2300 M⊕) |
| Discovery information | ||
| Discovery date | September 9, 1998 | |
| Discoverer(s) | Butler, Marcy et al. | |
| Discovery method | Doppler spectroscopy | |
| Discovery site | Hawaii, USA | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 168443 b is a planet seven times as massive as Jupiter. Given the high mass, this planet is likely to be a gas giant, or possibly a small brown dwarf depending on the orbital inclination. It orbits closer to its star than Mercury does to the Sun, and its surface temperature is likely to be very high.
References
- Notes
- ↑ WANG Sh. et al. (2012). "The Discovery of HD 37605c and a Dispositive Null Detection of Transits of HD 37605b". Astrophysical Journal. arXiv:1210.6985. Bibcode:2012ApJ...761...46W. doi:10.1088/0004-637X/761/1/46.
- Sources
- Marcy; Butler, R. Paul; Vogt, Steven S.; Fischer, Debra; Liu, Michael C. et al. (1998). "Two New Planets in Eccentric Orbits". The Astrophysical Journal 520 (1): 239–247. arXiv:astro-ph/9904275. Bibcode:1999ApJ...520..239M. doi:10.1086/307451.
External links
- "HD 168443". Exoplanets. Retrieved 2008-09-08.
Coordinates: 
18h 20m 03.9316s, −09° 35′ 44.601″