53 Eridani

This article is about l Eridani. Not to be confused with ι Eridani or λ Eridani.
"Sceptrum" redirects here. For the taxonomic synonym of a genus of plants, see Pedicularis.
53 Eridani
Observation data
Epoch J2000      Equinox J2000
Constellation Eridanus
Right ascension 04h 38m 10.82486s[1]
Declination −14° 18′ 14.4600″[1]
Apparent magnitude (V) 3.87[2] (4.02/6.95)[3]
Characteristics
Spectral type K1III[4]
U−B color index +1.03[5]
B−V color index +1.09[5]
Astrometry
Radial velocity (Rv)43.33 ± 0.28[6] km/s
Proper motion (μ) RA: -76.59[1] mas/yr
Dec.: -176.78[1] mas/yr
Parallax (π)29.69 ± 0.37 mas[1]
Distance110 ± 1 ly
(33.7 ± 0.4 pc)
Orbit[3]
Period (P)77.4 ± 1.5 yr
Semi-major axis (a)0.7069 ± 0.0093″
Eccentricity (e)0.666 ± 0.017
Inclination (i)59.8 ± 1.8°
Longitude of the node (Ω)171.25 ± 0.96°
Periastron epoch (T)1976.77 ± 0.26
Argument of periastron (ω)
(secondary)		23.5 ± 1.8°
Details
53 Eri A
Mass1.07 ± 0.25[7] M☉
Radius9.8[7] R☉
Luminosity37[6] L☉
Surface gravity (log g)2.49 ± 0.23[7] cgs
Temperature4603[6] K
Metallicity [Fe/H]-0.11[6] dex
Other designations
BD−14° 933, FK5 172, GJ 9160, HD 29503, HIP 21594, HR 1481, SAO 149781, WDS 04382+1418
Database references
SIMBAD53 Eri
53 Eri A
53 Eri B

53 Eridani (abbreviated 53 Eri), also designated l Eridani (l Eri), is a binary star in the constellation of Eridanus. The system has a combined apparent magnitude of 3.87. Parallax estimates made by the Hipparcos spacecraft put it at a distance of about 110 light-years, or 33.7 parsecs, from the Sun.[1]

The two components are designated 53 Eridani A (officially named Sceptrum)[8] and B.

  1. ^ a b c d e f van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
  2. ^ Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  3. ^ a b "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 15 May 2017.
  4. ^ Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal. 132 (1): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637. S2CID 119476992.
  5. ^ a b Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
  6. ^ a b c d Massarotti, Alessandro; Latham, David W.; Stefanik, Robert P.; Fogel, Jeffrey (2008). "Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity". The Astronomical Journal. 135 (1): 209–231. Bibcode:2008AJ....135..209M. doi:10.1088/0004-6256/135/1/209.
  7. ^ a b c Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A.
  8. ^ "Naming Stars". International Astronomical Union. Retrieved 16 December 2017.