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HD 63433

HD 63433

A light curve for V377 Geminorum, plotted from TESS data,[1] with the 6.46 day rotation period shown in red,
Observation data
Epoch J2000      Equinox J2000
Constellation Gemini[a]
Right ascension 07h 49m 55.05s[2]
Declination 27° 21′ 47.45″[2]
Apparent magnitude (V) 6.92[3]
Characteristics
Evolutionary stage Main sequence[4]
Spectral type G5V[4]
Variable type BY Draconis[5][6]
Astrometry
Radial velocity (Rv)−16.07±0.13[3] km/s
Proper motion (μ) RA: −10.0268±0.0846 mas/yr[3]
Dec.: −11.3143±0.0487 mas/yr[3]
Parallax (π)44.6848 mas[7]
Distance73.035±0.073 ly
(22.4035±0.0225 pc)[3]
Absolute magnitude (MV)5.19[8]
Details[9]
Mass0.99±0.03 M☉
Radius0.912±0.034 R☉
Luminosity0.753±0.026 L☉
Surface gravity (log g)4.52±0.05[4] cgs
Temperature5640±74 K
Metallicity [Fe/H]0.03±0.05[4] dex
Rotation6.45±0.05 d
Rotational velocity (v sin i)7.3±0.3 km/s
Age414±23 Myr
Other designations
V377 Gem, BD+27°1490, HD 63433, HIP 38228, SAO 79729, PPM 98012, TOI-1726, TYC 1933-747-1, GSC 01933-00747, 2MASS J07495506+2721473[7]
Database references
SIMBADdata

HD 63433 (TOI-1726, V377 Geminorum) is a G-type main sequence star located 73 light-years from Earth in the zodiacal constellation Gemini,[9][a] visually close to the star Pollux.[7] It has nearly the same radius and mass of the Sun, hence being classified as a Sun-like star.[9] However, it is much younger than the Sun, less than one tenth as old with an age of about 400 million years.[9][b] With an apparent magnitude of 6.9, it is not visible to the naked eye, but can be seen with a small telescope[11] or binoculars.[12] Based on its kinematic, rotational and lithium abundance properties, it is part of the Ursa Major Moving Group.[9] There are three exoplanets orbiting it, one is classified as an Earth-sized planet, while the two others are mini-Neptunes.[4]

  1. ^ Cite error: The named reference MAST was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference NASA Exoplanet Archive was invoked but never defined (see the help page).
  4. ^ a b c d e Cite error: The named reference Capistrant2024 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Notsu2017 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference AAVSO was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  9. ^ a b c d e Cite error: The named reference Mann2020 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Bonanno2002 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Stellar Catalog was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference binocs was invoked but never defined (see the help page).


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