Astronomy:HD 184010
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Short description: Subgiant star in the constellation Vulpecula
250px Location of HD 184010 in the night sky. The star is marked within the red square. | |
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Vulpecula[1] |
| Right ascension | 19h 31m 21.62s[2] |
| Declination | +26° 37′ 01.8″[2] |
| Apparent magnitude (V) | 5.89[3] |
| Characteristics | |
| Evolutionary stage | red giant branch[3][2] |
| Spectral type | K0 III-IV[3] |
| Astrometry | |
| Radial velocity (Rv) | 5.73±0.12[2] km/s |
| Proper motion (μ) | RA: 10.965[2] mas/yr Dec.: 25.121[2] mas/yr |
| Parallax (π) | 16.2940 ± 0.0301[2] mas |
| Distance | 200.2 ± 0.4 ly (61.4 ± 0.1 pc) |
| Absolute magnitude (MV) | +1.98[1] |
| Details[3] | |
| Mass | 1.35+0.19 −0.21 M☉ |
| Radius | 4.86+0.55 −0.49 R☉ |
| Luminosity | 13.09+3.15 −2.65 L☉ |
| Surface gravity (log g) | 3.18+0.08 −0.07 cgs |
| Temperature | 4,987±10[4] K |
| Metallicity [Fe/H] | −0.17±0.10 dex |
| Rotational velocity (v sin i) | 1.34 km/s |
| Age | 2.76+2.24 −0.95 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 184010 is a single evolved star in the constellation of Vulpecula. Its surface temperature is 4,987±10 K. HD 184010 has an orange/red hue and is visible to the naked eye with an apparent visual magnitude of 5.89. Based upon parallax measurements, it is located 200 light-years in distance from the Sun. The object is drifting further away from the Sun with a radial velocity of +5.73±0.12 km/s.[2]
Planetary system
In 2022, three planets orbiting HD 184010 were discovered by the radial velocity method.[3][4]
None of these three planets orbit in the habitable zone and all are believed to be gas giants.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥0.31+0.03 −0.04 MJ |
0.940+0.005 −0.001 |
286.6+2.4 −0.7 |
0 | — | — |
| c | ≥0.30+0.03 −0.06 MJ |
1.334+0.013 −0.005 |
484.3+5.5 −3.5 |
0 | — | — |
| d | ≥0.45+0.04 −0.06 MJ |
1.920±0.012 | 836.4±8.4 | 0 | — | — |
See also
Notes
- ↑ The preferred model assumes circular orbits.
References
- ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Teng, Huan-Yu; Sato, Bun’ei et al. (2022-12-01). "A trio of giant planets orbiting evolved star HD 184010". Publications of the Astronomical Society of Japan 74 (6): 1309–1328. doi:10.1093/pasj/psac070. ISSN 0004-6264. Bibcode: 2022PASJ...74.1309T.
- ↑ 4.0 4.1 "HD 184010 | NASA Exoplanet Archive". https://exoplanetarchive.ipac.caltech.edu/overview/HD%20184010.
- ↑ "HD 184010". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+184010.
Coordinates: 
12h 26m 17.8916s, −51° 21′ 46.2141″
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