HD 73256 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 73256 | |
| Constellation | Pyxis | |
| Right ascension | (α) | 08h 36m 23.0155s |
| Declination | (δ) | −30° 02′ 15.456″ |
| Distance | 119 ly (36.5 pc) | |
| Spectral type | G9V | |
| Orbital elements | ||
| Semi-major axis | (a) | 0.037 AU |
| Periastron | (q) | 0.036 AU |
| Apastron | (Q) | 0.038 AU |
| Eccentricity | (e) | 0.029±0.02 |
| Orbital period | (P) | 2.54858±0.00016 d |
| Orbital speed | (υ) | 160 km/s |
| Argument of periastron |
(ω) | 337±46° |
| Time of periastron | (T0) | 2452500.18±0.28 JD |
| Semi-amplitude | (K) | 269±8 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 1.87 MJ |
| Discovery information | ||
| Discovery date | 2003 | |
| Discoverer(s) | Udry et al. | |
| Discovery method | Doppler spectroscopy (CORALIE) | |
| Discovery site | La Silla Observatory, Chile | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 73256 b is an 1.87 MJ hot Jupiter orbiting at 0.037 AU taking 2.55 days to orbit around HD 73256.[1]
Assuming the planet is perfectly grey with no greenhouse or tidal effects, and a Bond albedo of 0.1, the temperature would be about 1300 K. This is close to 51 Pegasi b; between the predicted temperatures of HD 189733 b and HD 209458 b (1180-1392K), before they were measured. It is a candidate for "near-infrared characterisation with the VLTI Spectro-Imager".[2]
See also
References
- ↑ Udry, S.; et al. (2003). "The CORALIE survey for southern extra-solar planets X. A Hot Jupiter orbiting HD 73256". Astronomy and Astrophysics 407 (2): 679–684. arXiv:astro-ph/0304248. Bibcode:2003A&A...407..679U. doi:10.1051/0004-6361:20030815.
- ↑ Renard, S.; et al. (2008). "Prospects for near-infrared characterisation of hot Jupiters with the VLTI Spectro-Imager (VSI)". Proceedings of SPIE 7013: 70132Z. arXiv:0807.3014 [astro-ph]. doi:10.1117/12.790494.
External links
- "HD 73256". Exoplanets.
Coordinates: 
08h 36m 23.0155s, −30° 02′ 15.456″
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