54 Eridani

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54 Eridani

A light curve for DM Eridani, plotted from data published by Tabur et al. (2009)[1]
Observation data
J2000.0
Constellation Eridanus
Right ascension 04h 40m 26.51159s[2]
Declination −19° 40′ 17.3723″[2]
Apparent magnitude (V) 4.32[3]
Characteristics
Evolutionary stage asymptotic giant branch[4]
Spectral type M3/4 III[5]
U−B color index +1.80[6]
B−V color index 1.599±0.021[3]
Variable type SRb[7]
Distance
400 ± 10 ly
(122 ± 4 pc)
Absolute magnitude (MV)−0.93[3]
Details
Radius69+12
−6[2] R☉
Luminosity1,021+33
−38[2] L☉
Temperature3,915+190
−293[2] K
HR 1496, SAO 149818, WDS J04404-1940[9]
Database references
SIMBADdata

54 Eridani is a suspected

apparent visual magnitude of 4.32.[3] The object is moving closer to the Earth with a heliocentric radial velocity of −33 km/s.[3]

The visible component is an aging

luminosity of the Sun from its swollen photosphere at an effective temperature of 3,915 K.[2]

It was the second-brightest star in the

obsolete constellation of Sceptrum Brandenburgicum after 53 Eridani
.

References

  1. ^
    S2CID 15358380
    .
  2. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  3. ^
    S2CID 119257644
    .
  4. ^
    doi:10.1086/116239
    .
  5. ^
    Bibcode:1988mcts.book.....H
    .
  6. Bibcode:1986EgUBV........0M
    .
  7. ^
    S2CID 125853869
    .
  8. ^
    S2CID 18759600
    .
  9. ^ "54 Eri". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-05-28.
  10. S2CID 14878976
    .
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