astro.wikisort.org - StarHD 177808 is a 6th magnitude star in the constellation Lyra, approximately 610 light years away from Earth. It is a solitary[5] red giant star of the spectral type M0III, meaning it possesses a surface temperature of around 3,940 kelvins. It is therefore much larger and brighter than the Sun, yet cooler in comparison.
Red giant star in the constellation Lyra
HD 177808
Observation data Epoch J2000.0 Equinox J2000.0 |
Constellation |
Lyra |
Right ascension |
19h 04m 57.87462s[1] |
Declination |
+31° 44′ 38.6538″[1] |
Apparent magnitude (V) |
5.63[2] |
Characteristics |
Spectral type |
M0III[3] |
B−V color index |
1.548±0.003[2] |
Astrometry |
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Radial velocity (Rv) | 3.47±0.14[2] km/s |
Proper motion (μ) | RA: +74.989[1] mas/yr Dec.: −76.884[1] mas/yr |
Parallax (π) | 5.9150 ± 0.0831 mas[1] |
Distance | 551 ± 8 ly (169 ± 2 pc) |
Absolute magnitude (MV) | −0.75[2] |
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Details |
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Radius | 42.27+1.26 −4.39[1] R☉ |
Luminosity | 387.9±6.8[1] L☉ |
Temperature | 3,940+233 −58[1] K |
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Other designations |
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BD+31°3453, GC 26266, HD 177808, HIP 93718, HR 7237, SAO 67782 [4] |
Database references |
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SIMBAD | data |
References
- 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.
- 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.
- Roman, Nancy G. (December 1955), "A Catalogue of High-Velocity Stars", The Astrophysical Journal Supplement Series, 2: 195, Bibcode:1955ApJS....2..195R, doi:10.1086/190021, ISSN 0067-0049.
- "HD 177808". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-02-10.
- Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
Constellation of Lyra |
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Stars | |
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Galaxies |
- NGC 6606
- NGC 6612
- NGC 6640
- NGC 6646
- NGC 6657
- NGC 6662
- NGC 6663
- NGC 6665
- NGC 6671
- NGC 6672
- NGC 6675
- NGC 6685
- NGC 6686
- NGC 6688
- NGC 6692
- NGC 6695
- NGC 6700
- NGC 6702
- NGC 6703
- NGC 6710
- NGC 6713
- NGC 6740
- NGC 6745
- NGC 6765
- NGC 6792
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 Category |
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