Beta Eridani

β Eridani
Location of β Eridani (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Eridanus
Right ascension 05h 07m 50.98549s[1]
Declination −05° 05′ 11.2055″[1]
Apparent magnitude (V) 2.796[2]
Characteristics
Spectral type A3 III var[3]
U−B color index +0.124[2]
B−V color index +0.110[2]
R−I color index +0.08[4]
Astrometry
Radial velocity (Rv)–3.6[5] km/s
Proper motion (μ) RA: -82.82[1] mas/yr
Dec.: -75.39[1] mas/yr
Parallax (π)36.2456 ± 0.3575 mas[6]
Distance90.0 ± 0.9 ly
(27.6 ± 0.3 pc)
Absolute magnitude (MV)+0.59[7]
Details
Mass2.0[8] M☉
Radius2.4[8] R☉
Luminosity25[8] L☉
Surface gravity (log g)3.58[5] cgs
Temperature8,360,[9] 8,104[5] K
Metallicity [Fe/H]–0.4[10] dex
Rotational velocity (v sin i)196[3] km/s
Other designations
Cursa/Kursa,[11] Dhalim,[12] β Eri, Beta Eridani, Beta Eri, 67 Eridani, 67 Eri, BD−05 1162, CCDM J05079-0506A, FK5 188, GC 6274, GJ 9175, HD 33111, HIP 23875, HR 1666, IDS 05030-0513 A, PPM 187729, SAO 131794, WDS 05078-0505A.[13]
Database references
SIMBADdata

Beta Eridani (β Eridani, abbreviated Beta Eri, β Eri), formally named Cursa /ˈkɜːrsə/,[14] is the second-brightest star in the constellation of Eridanus, located in the northeast end of this constellation near the shared border with Orion. The apparent visual magnitude of this star is 2.796,[2] so it can be viewed with the naked eye in dark skies. Parallax measurements yield an estimated distance of about 89 light-years (27 parsecs) from the Earth.[1]

  1. ^ a b c d e Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference saaoc8_59 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference aaa393_897 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference bsc2 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference aj125_4_1980 was invoked but never defined (see the help page).
  6. ^ Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  7. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference aass85_3_1015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference kaler was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference aaa388_978 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference moore2006 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference allen1963 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  14. ^ "IAU Catalog of Star Names". Retrieved 28 July 2016.