Astronomy:BD+03 2562

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BD+03 2562
Observation data
Equinox J2000.0]] (ICRS)
Constellation Virgo
Right ascension  11h 50m 15.5527s[1]
Declination +02° 45′ 36.472″[1]
Apparent magnitude (V) 9.58[1]
Characteristics
Spectral type K2[2]
B−V color index 1.27[1]
Astrometry
Radial velocity (Rv)50.88 ± 0.06[3] km/s
Distance8539 ± 1840 ly
(2618 ± 564[3] pc)
Absolute magnitude (MV)−2.51[3]
Details[3]
Mass1.14 ± 0.25 M
Radius32.35 ± 8.82 R
Luminosity501 L
Surface gravity (log g)1.89 ± 0.10 cgs
Temperature4095 ± 20 K
Metallicity [Fe/H]−0.71 ± 0.09 dex
Rotational velocity (v sin i)2.7 ± 0.3 km/s
Age5.25 Gyr
Other designations
TYC 276-507-1, 2MASS J11501555+0245365[2]
Database references
SIMBADdata

BD+03 2562 is a very-low-metallicity star[3] in the constellation of Virgo. It is located about 8,500 light-years (2,600 parsecs) from Earth.

Planetary system

The star is orbited by a superjovian exoplanet, BD+03 2562 b, which was discovered in 2017 by a radial velocity method.[3]

The planetary system[4]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >6.4±1.3 MJ 1.3±0.1 481.9+2.7−2.8 0.20+0.12−0.08

References

  1. 1.0 1.1 1.2 1.3 Hog, E. (1998). "The Tycho Reference Catalogue". Astronomy and Astrophysics 335: L65. Bibcode1998A&A...335L..65H. 
  2. 2.0 2.1 "BD+03 2562". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=BD%2B03+2562. 
  3. 3.0 3.1 3.2 3.3 3.4 3.5 Villaver, E; Niedzielski, A; Wolszczan, A; Nowak, G; Kowalik, K; Adamów, M; MacIejewski, G; Deka-Szymankiewicz, B et al. (2017). "Tracking Advanced Planetary Systems (TAPAS) with HARPS-N". Astronomy & Astrophysics 606: A38. doi:10.1051/0004-6361/201730471. Bibcode2017A&A...606A..38V. 
  4. "Planet BD+03 2562 b". Extrasolar Planets Encyclopaedia. https://exoplanet.eu/catalog/bd_03_2562_b--6575/.