GJ 9827

GJ 9827
Observation data
Epoch J2000      Equinox J2000
Constellation Pisces
Right ascension 23h 27m 04.83769s[1]
Declination −01° 17′ 10.5827″[1]
Apparent magnitude (V) 10.250[2]
Characteristics
Spectral type K6 V[2]
B−V color index +1.30[3]
Astrometry
Radial velocity (Rv)32.01±0.27[1] km/s
Proper motion (μ) RA: 375.977 mas/yr[1]
Dec.: 215.870 mas/yr[1]
Parallax (π)33.7247 ± 0.0169 mas[1]
Distance96.71 ± 0.05 ly
(29.65 ± 0.01 pc)
Details
Mass0.606+0.015
−0.014[4] M☉
Radius0.602+0.005
−0.004[4] R☉
Luminosity0.119+0.035
−0.029[2] L☉
Surface gravity (log g)4.682±0.021[5] cgs
Temperature4,236±12[6] K
Metallicity [Fe/H]−0.29±0.03[6] dex
Rotation28.16+3.38
−2.66 d[6]
Rotational velocity (v sin i)<1.75[6] km/s
Age10+3
−5[4] Gyr
Other designations
BD−02° 5958, GJ 9827, HIP 115752, LTT 9542, 2MASS J23270480-0117108, K2-135[7]
Database references
SIMBADdata
ARICNSdata

GJ 9827 is a star in the constellation of Pisces. It is a K-type main-sequence star with an apparent magnitude of 10.250.[2] It is 97 light-years (30 parsecs) away, based on parallax.[1]

The rotation period of the star could not be determined as of 2020, and could be either around 15 or 30 days, depending on the interpretation of available data.[5]

  1. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Rodriguez was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Mumford was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Bonomo2023 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Kosiarek2020 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Passegger2024 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).