astro.wikisort.org - Meteorite
HD 73256 b is a 1.87 MJ hot Jupiter orbiting at 0.037 AU taking 2.55 days to orbit around HD 73256.[1]
| Discovery | |
|---|---|
| Discovered by | Udry et al. |
| Discovery site | La Silla Observatory, Chile |
| Discovery date | 2003 |
Detection method | Doppler spectroscopy (CORALIE) |
| Orbital characteristics | |
| Apastron | 0.038 AU (5,700,000 km) |
| Periastron | 0.036 AU (5,400,000 km) |
Semi-major axis | 0.037 AU (5,500,000 km) |
| Eccentricity | 0.029±0.02 |
Orbital period (sidereal) | 2.54858±0.00016 d |
Average orbital speed | 160 |
Time of periastron | 2452500.18±0.28 |
Argument of periastron | 337±46 |
| Semi-amplitude | 269±8 |
| Star | HD 73256 |
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]
In 2018, K. Ment and colleagues attempted to confirm the existence of this planet using Keck/HIRES data, but were unable to do so despite a likelihood of success. Thus the existence of this object is disputed.[3]
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, Stéphanie; Absil, Olivier; Berger, Jean-Philippe; Bonfils, Xavier; Forveille, Thierry; Malbet, Fabien (2008). "Prospects for near-infrared characterisation of hot Jupiters with the VLTI Spectro-Imager (VSI)" (PDF). Proceedings of SPIE. Optical and Infrared Interferometry. 7013: 70132Z–70132Z–10. arXiv:0807.3014. Bibcode:2008SPIE.7013E..2ZR. doi:10.1117/12.790494. S2CID 119268109.
- Ment, Kristo; et al. (November 2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal. 156 (5): 45. arXiv:1809.01228. Bibcode:2018AJ....156..213M. doi:10.3847/1538-3881/aae1f5. S2CID 119243619. 213.
External links
- "HD 73256". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-10-31.
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На других языках
[de] HD 73256 b
HD 73256 b ist ein Hot Jupiter, der den gelben Zwerg HD 73256 mit einer Umlaufperiode von rund 2,55 Tagen umkreist. Er wurde von Udry et al. mit Hilfe der Radialgeschwindigkeitsmethode entdeckt (Publikation 2003). Die Mindestmasse des Objekts beträgt 1,87 Jupitermassen. Die große Halbachse seiner Umlaufbahn misst ca. 0,037 Astronomische Einheiten bei einer Exzentrizität von 0,03.- [en] HD 73256 b
[ru] HD 73256 b
HD 73256 b — газовый гигант, обращающийся вокруг жёлтого карлика HD 73256. Открыт методом доплеровской спектроскопии в 2003 году. Находится на расстоянии примерно 119 световых лет от Солнечной системы.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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