HD 4203
| Opazovalni podatki Epoha J2000.0 Enakonočje J2000.0 | |
|---|---|
| Ozvezdje | Ribi |
| Rektascenzija | 00h 44m 41,2003s[1] |
| Deklinacija | +20° 26′ 56,1380″[1] |
| Navidezni sij (V) | 8,68 |
| Značilnosti | |
| Spektralni razred | G5 |
| Astrometrija | |
| Lastno gibanje (μ) | RA: 122070±0102[1] mas/l Dec.: −124192±0062[1] mas/l |
| Paralaksa (π) | 12,2595 ± 0,0538[1] mas |
| Oddaljenost | 266 ± 1 sv. l. (81.6 ± 0.4 pc) |
| Podrobnosti | |
| Masa | 1,12 ± 0,03[2] M☉ |
| Polmer | 1,35 ± 0,03[2] R☉ |
| Izsev | 1,68 ± 0,01[2] L☉ |
| Površinska težnost (log g) | 4,22 ± 0,03[2] cgs |
| Temperatura | 5666 ± 43[2] K |
| Starost | 6,3 ± 1,0[2] Ga |
| Druge oznake | |
| Sklici na podatkovne baze | |
| SIMBAD | podatki |
| Exoplanet Archive | podatki |
| Extrasolar Planets Encyclopaedia | podatki |
HD 4203 je zvezda 9. magnitude, ki se nahaja približno 266 svetlobnih let stran od Zemlje v ozvezdju Rib. Zvezda je rumena zaradi spektralnega tipa G5, stara je 9,41 milijard let in ima veliko vsebnost kovin. Ima tudi planet, ki je plinski velikan.[4]
| Spremljevalke (v vrstnem redu od zvezde) |
masa | glavna polos (a.e.) |
orbitalna perioda (dni) |
izsrednost | naklon | polmer |
|---|---|---|---|---|---|---|
| b | > 1164±0067 MJ | 207±018 | 43188±085 | 0519±0027 | — | — |
| c | > 217±052 MJ | — | 6,700±4,500 | 024±013 | — | — |
Glej tudi
Sklici
- ↑ 1,0 1,1 1,2 1,3 1,4 Brown, A. G. A.; in sod. (Gaia collaboration) (Avgust 2018). »Gaia Data Release 2: Summary of the contents and survey properties«. Astronomy & Astrophysics. Zv. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Zapis Gaia DR2 za ta vir na VizieR.
- ↑ 2,0 2,1 2,2 2,3 2,4 2,5 Bonfanti, A.; in sod. (2015). »Revising the ages of planet-hosting stars«. Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
- ↑ »HD 4203«. SIMBAD. Centre de données astronomiques de Strasbourg. Pridobljeno 4. novembra 2019.
- ↑ Vogt, Steven S.; et al. (2002). "Ten Low-Mass Companions from the Keck Precision Velocity Survey". The Astrophysical Journal. 568 (1): 352–362. arXiv:astro-ph/0110378. Bibcode:2002ApJ...568..352V. doi:10.1086/338768.
- ↑ Butler, R. P.; in sod. (2006). »Catalog of Nearby Exoplanets«. The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
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