GJ 1151

GJ 1151

Artist's impression of GJ 1151 and an orbiting planet
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Ursa Major
Right ascension 11h 50m 57.72053s[1]
Declination +48° 22′ 38.5612″[1]
Apparent magnitude (V) 14.008[2]
Characteristics
Spectral type dM4.5[2]
B−V color index 1.787[3]
Astrometry
Radial velocity (Rv)−36.13±0.26[1] km/s
Proper motion (μ) RA: -1545.069 mas/yr[1]
Dec.: -962.724 mas/yr[1]
Parallax (π)124.3378 ± 0.0549 mas[1]
Distance26.23 ± 0.01 ly
(8.043 ± 0.004 pc)
Absolute magnitude (MV)14.482±0.022[2]
Details
Mass0.1639±0.0093[4] M☉
Radius0.1781±0.0042[4] R☉
Luminosity (bolometric)0.003315±0.000018[4] L☉
Surface gravity (log g)5.09±0.09[4] cgs
Temperature3,143±26[2] K
Metallicity [Fe/H]−0.12±0.10[4] dex
Rotation140±10 d
Rotational velocity (v sin i)2.0[5] km/s
Age2.5[3] Gyr
Other designations
GJ 1151, G 122-49, LHS 316, NLTT 28752, 2MASS J11505787+4822395, Gaia EDR3 786834302080370304[6]
Database references
SIMBADdata

GJ 1151 is a star located in the northern circumpolar constellation of Ursa Major at a distance of 26.2 light-years (8.0 parsecs) from the Sun. It has a reddish hue and is too faint to be visible to the naked eye with an apparent visual magnitude of 14.0[2] The star is moving closer with a radial velocity of −36 km/s,[5] and has a relatively large proper motion, traversing the celestial sphere at a rate of 1.815″·yr−1.[7]

This is a small red dwarf star of spectral type dM4.5.[2] It is 2.5[3] billion years old and is spinning with a projected rotational velocity of 2.0 km/s.[5] The star has 15.4%[3] of the mass of the Sun and 19.0%[3] of the Sun's radius, with an effective temperature of 3,143 K.[2]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference Houdebine2019 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Mann2015 was invoked but never defined (see the help page).
  4. ^ a b c d e Cite error: The named reference Blanco-Pozo2023 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Jeffers2018 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Lepine2005 was invoked but never defined (see the help page).