HD 185018
(Redirected from HR 7456)
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 36m 52.45500s[1] |
| Declination | +11° 16′ 23.5086″[1] |
| Apparent magnitude (V) | 5.978[2] |
| Characteristics | |
| Spectral type | G0Ib[3] |
| B−V color index | +0.881±0.015[4] |
| Astrometry | |
| Radial velocity (Rv) | +0.50±0.79[1] km/s |
| Proper motion (μ) | RA: 7.929[1] mas/yr Dec.: 2.719[1] mas/yr |
| Parallax (π) | 3.2148 ± 0.0705 mas[1] |
| Distance | 1,010 ± 20 ly (311 ± 7 pc) |
| Absolute magnitude (MV) | −1.81[4] |
| Details | |
| Mass | 5.5[3] M☉ |
| Radius | 25.17+0.37 −0.72[1] R☉ |
| Luminosity | 395±11[1] L☉ |
| Surface gravity (log g) | 2.06[3] cgs |
| Temperature | 5,131+75 −38[1] K |
| Metallicity [Fe/H] | −0.16[5] dex |
| Rotational velocity (v sin i) | 10[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 185018 is supergiant[3] star in the equatorial constellation of Aquila.
References
[edit]- ^ a b c d e f g h i Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ Haggkvist, L.; Oja, T. (1970), "Results of BV photometry 1969-70 (Uppsala refractor)", Private Communication (Private Communication), Bibcode:1970Priv.........0H Private Communication.
- ^ a b c d e Lyubimkov, Leonid S.; et al. (November 2012), "Lithium abundance in atmospheres of F- and G-type supergiants and bright giants", Monthly Notices of the Royal Astronomical Society, 427 (1): 11–26, arXiv:1212.6057, Bibcode:2012MNRAS.427...11L, doi:10.1111/j.1365-2966.2012.21617.x, S2CID 119191810
- ^ a b Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
- ^ Lyubimkov, L. S.; et al. (October 2019), "Oxygen abundance and the N/C versus N/O relation for AFG supergiants and bright giants", Monthly Notices of the Royal Astronomical Society, 489 (2): 1533–1542, arXiv:1907.04634, Bibcode:2019MNRAS.489.1533L, doi:10.1093/mnras/stz2285
- ^ "HD 185018". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-10-14.
External links
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