GJ 1062

GJ 1062
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Eridanus
Right ascension 03h 38m 15.69799s[1]
Declination −11° 29′ 13.5050″[1]
Apparent magnitude (V) +13.010[2]
Characteristics
Spectral type M2.5VI[3]
U−B color index +1.385[4]
B−V color index +1.605[4]
R−I color index 1.184[2]
Astrometry
Radial velocity (Rv)−84.88±0.56[1] km/s
Proper motion (μ) RA: 1,458.201 mas/yr[1]
Dec.: −2,696.545 mas/yr[1]
Parallax (π)61.8861 ± 0.0220 mas[1]
Distance52.70 ± 0.02 ly
(16.159 ± 0.006 pc)
Absolute magnitude (MV)10.608[5]
Details
Mass0.255[6] M☉
Radius0.411±0.051 R☉[2]
0.372±0.076 R☉[5]
0.202±0.012[7] R☉
Luminosity0.0055[2] L☉
Temperature3,488±50[2] K
Metallicity [Fe/H]−0.28±0.15[7] dex
Rotational velocity (v sin i)9.80[2] km/s
Other designations
GJ 1062, LHS 20, LTT 1717, Ross 578, 2MASS J03381558-1129102[8]
Database references
SIMBADdata
ARICNSdata

GJ 1062 is a single[6] red dwarf star in the constellation Eridanus, positioned about two degrees to the SSE of Epsilon Eridani.[9] It is also known as LHS 20 and Ross 578. The star is invisible to the naked eye with an apparent visual magnitude of +13.0,[2] requiring a telescope with at least a 25 cm (10 in) aperture to view.[10] It is located at a distance of 52.7 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −85 km/s.[1] The star has a high proper motion, traversing the sky at the rate of 3.033 arcseconds per year.[11]

This is an M-type subdwarf star with a stellar classification of M2.5VI.[3] It was one of the first three subdwarfs to be definitively identified by G. Kuiper in 1940, the other two being Kapteyn's Star and Wolf 1106.[12] GJ 1062 is considered a likely member of the halo population, and thus is a MACHO.[13]

  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 e f g Cite error: The named reference Houdebine2010 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Gizis1977 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference UBV was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Houdebine_et_al_2016 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Winters_et_al_2019 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Kesseli_et_al_2019 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Sinnott_Perryman_1997 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference ICQ was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Luyten1995 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Kotoneva_et_al_2005 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Fuchs_Jahreiß_1998 was invoked but never defined (see the help page).