53 Eridani

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Double star
53 Eridani
Observation
dates equinox :  J2000.0 , epoch : J2000.0
AladinLite
Constellation Eridanus
Right ascension 04 h 38 m 10.825 s
declination -14 ° 18 ′ 14.46 ″
Apparent brightness  3.9 likes
Astrometry
Radial velocity (+41.4 ± 1.1) km / s
parallax (29.69 ± 0.37) mas
distance  (110 ± 1) ly
((33.7 ± 0.4) pc )
Proper movement :
Rec. Share: approx. −77 mas / a
Dec. portion: approx. −177 mas / a
orbit 
period (77.4 ± 1.5) a
Major semi-axis 0 ″, 707 ± 0 ″, 009
eccentricity 0 °, 666 ± 0.017
Orbit inclination 59 °, 8 ± 1 °, 8
Argument of the node approx. 171 °
Epoch of the periastron approx. 1976.8
Argument of the periapsis 23 °, 5 ± 1 °, 8
Individual data
Names A; B.
Observation data:
Apparent brightness A. 4.1 mag
B. 7.1 likes
Typing:
Spectral class A. K0
Other names
and catalog entries
Bayer name l Eridani
Flamsteed name 53 Eridani
Bonn survey BD −14 ° 933
Bright Star Catalog HR 1481 [1]
Henry Draper Catalog HD 29503 [2]
SAO catalog SAO 149781 [3]
Tycho catalog TYC 5327-1434-1 [4]
Hipparcos catalog HIP 21594 [5]
WDS catalog WDS 04382-1418
Further designations: Sceptrum, Kui 18, FK5  172, GJ 9160, CCDM 04382-1418

53 Eridani ( 53 Eri ) is a double star with an apparent magnitude of 3.9 mag and a distance of about 110  light years . The star was recognized as a double star by Gerard Peter Kuiper . The system has an orbital period of around 77 years, the major semi-axis measures 0 ″, 7.

The star bears the historical proper name Sceptrum (Latin "scepter")

Individual evidence

  1. ^ Hipparcos catalog (ESA 1997)
  2. ^ A b c Catalog of the Components of the Double and Multiple Stars
  3. ↑ Pulkovo radial velocities for 35493 HIP stars
  4. ^ Hipparcos, the New Reduction (van Leeuwen, 2007)