83 Leonis

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Double star
83 Leonis
Observation
dates equinox :  J2000.0 , epoch : J2000.0
AladinLite
Constellation lion
Right ascension 11 h 26 m 45.75 s
declination + 03 ° 00 ′ 45.6 ″
Known exoplanets

1

Astrometry
parallax 54.92 ± 0.05 mas
54.91 ± 0.17 mas

distance  (59) Lj
((18) pc )
Individual data
Names A; B.
Observation data:
Apparent brightness A. 6.5 mag
B. 7.4 mag
Typing:
Spectral class A. K0 IV
B. K2 V
Physical Properties:
Metallicity [Fe / H] A.
B. +0.36
Other names
and catalog entries
Flamsteed name 83 Leonis
Bright Star Catalog HR 4414 [1]
Bonn survey BD + 3 ° 2502 BD + 3 ° 2502
Henry Draper Catalog HD 99491 HD 99492
SAO catalog SAO 118864 SAO 118865
Tycho catalog TYC 267-1191-1 [2] TYC 267-1200-1 [3]
Hipparcos catalog HIP 55846 HIP 55848
WDS catalog WDS 11268 + 0301
Further designations: FY 429
  Wolf 393 Wolf 394

83 Leonis is a binary star system at a distance of about 59 light years . The two components are approximately 515 astronomical units apart .

An exoplanet was detected around the 7.4 mag slightly darker of the two components, HD 99492 ( 83 Leonis B ) . In 2005, Marcy et al. the discovery of a spectroscopic object with an orbit period of 17 days in a very close orbit (approx. 0.1 AU). The minimum mass of 83 Leonis Bb / HD 99492 b is around 0.1 Jupiter masses.

Individual evidence

  1. ↑ STF 1540AB. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 15, 2019 .
  2. ↑ 83 Leo. In: SIMBAD. Center de Données astronomiques de Strasbourg, accessed September 15, 2019 .
  3. ↑ 83 Leo B. In: SIMBAD. Center de Données astronomiques de Strasbourg, accessed September 15, 2019 .
  4. ↑ Encyclopedia of the Extrasolar Planets