HD 88133

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HD 88133
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Leo
Right ascension  10h 10m 07.6764s[1]
Declination +18° 11′ 12.7322″[1]
Apparent magnitude (V) 8.06
Spectral type G5IV
Proper motion (μ) RA: −11.076±0.119[1] mas/yr
Dec.: −265.160±0.085[1] mas/yr
Parallax (π)13.5561 ± 0.0557[1] mas
Distance240.6 ± 1.0 ly
(73.8 ± 0.3 pc)
Other designations
BD+18 2326, HIP 498131, SAO 98978, LTT 12725, NLTT 23562[2]
Database references

HD 88133 is an 8th magnitude star in the constellation of Leo. It is classified as a yellow subgiant star (spectral type G5IV). It is slightly more massive than our Sun, cooler and more luminous. As a subgiant, it has left the main sequence and started to evolve towards red gianthood. Located at a distance of 240 light years from Earth it is not in our immediate neighbourhood and thus not visible to the unaided eye. With a small telescope it should be easily visible.

In 2004 a planet was found to orbit the star.[3]

The HD 88133 planetary system[4]
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
b ≥0.282±0.046 MJ 0.0479±0.0032 3.414887±0.000045 0 (fixed)

See also[edit]


  1. ^ a b c d e 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. ^ "HD 88133". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-12-28.
  3. ^ Fischer, Debra A.; et al. (2005). "The N2K Consortium. I. A Hot Saturn Planet Orbiting HD 88133". The Astrophysical Journal. 620 (1): 481–486. Bibcode:2005ApJ...620..481F. doi:10.1086/426810.
  4. ^ Ment, Kristo; et al. (2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal. 156 (5). 213. arXiv:1809.01228. Bibcode:2018AJ....156..213M. doi:10.3847/1538-3881/aae1f5.

External links[edit]

Coordinates: Sky map 10h 10m 07.68s, +18° 11′ 12.74″