HD 21389

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HD 21389
Location of CE Camelopardalis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation
Camelopardalis
Right ascension 03h 29m 54.74360s[1]
Declination +58° 52′ 43.4969″[1]
Apparent magnitude (V) 4.54[2]
Characteristics
Spectral type A0 Iae[2]
U−B color index −0.11[3]
B−V color index +0.56[3]
Variable type α Cyg[4]
Distance
approx. 3,500 ly
(approx. 1,100 pc)
Absolute magnitude (MV)−7.20[3]
Details
Myr
HIP 16281, HR 1040, HD 21389, SAO
 24061
Database references
SIMBADdata
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

HD 21389 is a

Camelopardalis OB1 association. The near-identical member CS Camelopardalis
lies half a degree to the north.

Since 1943, the

spectrum of CE Cam has served as one of the stable anchor points by which other stars are classified.[6]

CE Camelopardalis is some 19 times as massive as the Sun and 55,000 times as luminous. Hohle and colleagues, using the parallax, extinction and analysis of spectrum, came up with a mass 14.95±0.41 times that and luminosity 62,679 times that of the Sun.[7]

CE Cam is embedded in a large dusty molecular cloud, part of which it illuminates as a reflection nebula (vdB15 or BFS 29). This is a region of ongoing star formation with stars aged from one to a hundred million years old. CE Cam itself is thought to be around 11 million years old, long enough to have exhausted its core hydrogen and evolved away from the main sequence into a supergiant.[3]

  • A visual band light curve for CE Camelopardalis, adapted from Corliss et al. (2015)[8]
    A visual band light curve for CE Camelopardalis, adapted from Corliss et al. (2015)[8]
  • CE Cam and the surrounding nebulosity at infrared wavelengths (Credit: NASA/JPL-Caltech/UCLA)
    CE Cam and the surrounding nebulosity at infrared wavelengths (Credit: NASA/JPL-Caltech/UCLA)

References

  1. ^
    S2CID 244398875
    . Gaia DR3 record for this source at VizieR.
  2. ^
    S2CID 118557626
    .
  3. ^
    doi:10.1086/323705
    .
  4. Bibcode:2009yCat....102025S
    .
  5. S2CID 119231169
    .
  6. Bibcode:1993AAS...183.1710G, archived from the original
    on 2019-06-25, retrieved 2012-02-04
  7. S2CID 111387483
  8. S2CID 126051683
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=HD_21389&oldid=1154755718"