HR 858

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HR 858
Position of HR 858 in Fornax
Observation data
Epoch J2000.00      Equinox J2000.00
Constellation Fornax
Right ascension  02h 51m 56.246s[1]
Declination −30° 48′ 52.26″[1]
Apparent magnitude (V) 6.382[2]
Evolutionary stage F6V[3]
Spectral type Main sequence
B−V color index +0.484[4]
Radial velocity (Rv)10.07±0.13[1] km/s
Proper motion (μ) RA: 123.229±0.070[1] mas/yr
Dec.: 105.788±0.151[1] mas/yr
Parallax (π)31.2565 ± 0.0700[1] mas
Distance104.3 ± 0.2 ly
(31.99 ± 0.07 pc)
Absolute magnitude (MV)+3.82[4]
[5] M
Radius1.30[1] R
Luminosity2.370[1] L
Surface gravity (log g)4.19±0.10[5] cgs
Temperature6,201±50[5] K
Metallicity [Fe/H]−0.14±0.08[5] dex
Rotational velocity (v sin i)8.3±0.5[5] km/s
Other designations
CD−31°1148, HD 17926, HIP 13363, HR 858
Database references

HR 858 is a near naked eye visible star in Fornax, 31.3 parsecs away. In May 2019, it was announced to have at least 3 exoplanets as observed by transit method of the Transiting Exoplanet Survey Satellite.[5]


  1. ^ a b c d e f g h 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.
  2. ^ Høg, E.; et al. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. doi:10.1888/0333750888/2862.
  3. ^ Gray, R. O.; et al. (July 2006). "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample". The Astronomical Journal. 132 (1): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637.
  4. ^ 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.
  5. ^ a b c d e f Vanderburg, Andrew; Huang, Chelsea X.; Rodriguez, Joseph E.; Becker, Juliette C.; Ricker, George R.; Vanderspek, Roland K.; Latham, David W.; Seager, Sara; Winn, Joshua N.; Jenkins, Jon M.; Addison, Brett; Bieryla, Allyson; Briceño, Cesar; Bowler, Brendan P.; Burke, Christopher J.; Burt, Jennifer A.; Caldwell, Douglas A.; Clark, Jake T.; Crossfield, Ian; Dittmann, Jason A.; Dynes, Scott; Guerrero, Natalia; Horner, Jonathan; Kane, Stephen R.; Kielkopf, John; Kraus, Adam L.; Law, Nicolas; Mann, Andrew W.; Mengel, Matthew W.; et al. (2019). "TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858". arXiv:1905.05193 [astro-ph.EP].

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