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Gliese 433

Gliese 433
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Hydra
Right ascension 11h 35m 26.94777s[1]
Declination −32° 32′ 23.8842″[1]
Apparent magnitude (V) 9.81[2]
Characteristics
Spectral type M2V[3]
Apparent magnitude (U) 12.508[2]
Apparent magnitude (B) 11.299[2]
Apparent magnitude (R) 8.82[2]
Apparent magnitude (I) 7.664[2]
Apparent magnitude (J) 6.471[2]
Apparent magnitude (H) 5.856±0.036[2]
Apparent magnitude (K) 5.623±0.021[2]
U−B color index 1.23[2]
B−V color index 1.489±0.004[2]
V−R color index 0.99[2]
R−I color index 1.16[2]
Astrometry
Radial velocity (Rv)+17.986±0.0006[4] km/s
Proper motion (μ) RA: −71.060±0.020 mas/yr[1]
Dec.: −850.592±0.016 mas/yr[1]
Parallax (π)110.1711 ± 0.0204 mas[1]
Distance29.605 ± 0.005 ly
(9.077 ± 0.002 pc)
Absolute magnitude (MV)10.07[2]
Details
Mass0.48[5] M☉
Radius0.529±0.021[6] R☉
Luminosity0.034[7] L☉
Habitable zone inner limit0.186 AU[8]
Habitable zone outer limit0.362 AU[8]
Surface gravity (log g)4.81±0.14[9] cgs
Temperature3,445±50[6] K
Metallicity [Fe/H]−0.02±0.05[10] dex
Rotation73.2±16.0 d[11]
Rotational velocity (v sin i)1.0[6] km/s
Other designations
CD−31 9113, GJ 433, HIP 56528, SAO 202602, LHS 2429, LTT 4290, NLTT 27914, 2MASS J11352695-3232232
Database references
SIMBADdata
Exoplanet Archivedata
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

Gliese 433 is a dim red dwarf star with multiple exoplanetary companions, located in the equatorial constellation of Hydra. The system is located at a distance of 29.6 light-years from the Sun based on parallax measurements, and it is receding with a radial velocity of +18 km/s.[4] Based on its motion through space, this is an old disk star.[7] It is too faint to be viewed with the naked eye, having an apparent visual magnitude of 9.81[2] and an absolute magnitude of 10.07.[2]

This is a small M-type main-sequence star with a stellar classification of M2V.[3] It is an older star[12] with a rotation period of roughly 73 days[11] and a below average activity level for stars of its mass.[7] The star has 48%[5] of the mass and 53%[6] of the radius of the Sun. It is radiating just 3.4%[7] of the luminosity of the Sun from its photosphere at an effective temperature of 3,445 K.[6]

  1. ^ a b c d Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j k l m n o Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Henry_et_al_2002 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Soubiran_et_al_2018 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference arXiv.0908.0944 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference Houdebine2010 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference Delfosse_et_al_2013 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference PHL-Gliese433b was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Stassun_et_al_2016 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Lindgren2017 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Suárez_Mascareño_et_al_2015 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Kennedy_et_al_2018 was invoked but never defined (see the help page).

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