Upsilon3 Eridani

For other star systems with this Bayer designation, see Upsilon Eridani.
υ3 Eridani
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Eridanus
Right ascension 04h 24m 02.21725s[1]
Declination −34° 01′ 00.6542″[1]
Apparent magnitude (V) 3.96[2]
Characteristics
Spectral type K4 III[3]
U−B color index +1.80[2]
B−V color index +1.49[2]
Astrometry
Radial velocity (Rv)+24.1±0.7[4] km/s
Proper motion (μ) RA: +73.77[1] mas/yr
Dec.: +56.70[1] mas/yr
Parallax (π)11.01 ± 0.37 mas[1]
Distance296 ± 10 ly
(91 ± 3 pc)
Absolute magnitude (MV)−0.82[5]
Details
Radius54[6] R☉
Luminosity426[7] L☉
Surface gravity (log g)1.71[8] cgs
Temperature3,990[8] K
Metallicity [Fe/H]−0.23[8] dex
Other designations
Beemim, υ3 Eri, d Eri, 43 Eridani, CD−34° 1664, FK5 1121, HD 28028, HIP 20535, HR 1393, SAO 194984.[9]
Database references
SIMBADdata

Upsilon3 Eridani (υ3 Eridani, abbreviated Upsilon3 Eri, υ3 Eri), officially named Beemim /ˈbiːməm/,[10] is a star in the constellation of Eridanus. It is visible to the naked eye with an apparent visual magnitude of 3.96[2] The distance to this star, based upon an annual parallax shift of 11.01 mas,[1] is around 296 light-years.

This is an evolved K-type giant star with a stellar classification of K4 III.[3] It has about 54[6] times the radius of the Sun and radiates 426[7] times the solar luminosity from its outer atmosphere at an effective temperature of 3,990 K.[8]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1982 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference cadars was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  8. ^ a b c d Cite error: The named reference Soubiran2010 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ "Naming Stars". IAU.org. Retrieved 16 December 2017.