HD 24040 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 24040 | |
| Constellation | Taurus | |
| Right ascension | (α) | 03h 50m 22.968s[1] |
| Declination | (δ) | +17° 28′ 34.92″[1] |
| Apparent magnitude | (mV) | 7.52 |
| Distance | 152±5[1] ly (47±2[1] pc) | |
| Spectral type | G0 | |
| Mass | (m) | 1.18 M☉ |
| Orbital elements | ||
| Semi-major axis | (a) | 4.637±0.067[2] AU |
| Eccentricity | (e) | 0.047±0.020[2] |
| Orbital period | (P) | 3490±25[2] d |
| Argument of periastron |
(ω) | 67±24[2]° |
| Time of periastron | (T0) | 2456670±240[2] JD |
| Semi-amplitude | (K) | 51.8±1.6[2] m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 4.10±0.12[2] MJ |
| Discovery information | ||
| Discovery date | March 12, 2006 | |
| Discoverer(s) | Butler et al. | |
| Discovery method | Doppler spectroscopy | |
| Discovery site | California, USA | |
| Discovery status | Published[3] | |
| Other designations | ||
HIP 17960 b | ||
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 24040 b is a long-period exoplanet taking approximately 3500 days to orbit at 4.6 astronomical units in an almost circular orbit. It has a minimum mass 4 times that of Jupiter.[2]
Discovery
HD 24040b was discovered in 2006 based on observations made at the W. M. Keck Observatory in Hawaii. However, because the observations covered less than one complete orbit there were only weak constraints on the period and mass.[3] The first reliable orbit for HD 24040b was obtained by astronomers at Haute-Provence Observatory in 2012 who combined the keck measurements with ones from the SOPHIE and ELODIE spectrographs.[4] The most recent orbit published in 2015 added additional keck measurements and refined the orbital parameters.[2]
References
- 1 2 3 4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- 1 2 3 4 5 6 7 8 9 Feng, Y. Katherina; et al. (2015). "The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets". The Astrophysical Journal. 800. 22. arXiv:1501.00633. Bibcode:2015ApJ...800...22F. doi:10.1088/0004-637X/800/1/22.
- 1 2 Wright, J. T.; et al. (2007). "Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars". The Astrophysical Journal. 657 (1): 533–545. arXiv:astro-ph/0611658. Bibcode:2007ApJ...657..533W. doi:10.1086/510553.
- ↑ Boisse, I.; et al. (2012). "The SOPHIE search for northern extrasolar planets. V. Follow-up of ELODIE candidates: Jupiter-analogs around Sun-like stars". Astronomy and Astrophysics. 545. A55. arXiv:1205.5835. Bibcode:2012A&A...545A..55B. doi:10.1051/0004-6361/201118419.
External links
- "HD 24040". Exoplanets.
Coordinates: 