54 Cassiopeiae

54 Cassiopeiae
Observation data
Epoch J2000      Equinox J2000
Constellation Cassiopeia[1]
Right ascension 02h 09m 80.26080s[2]
Declination +71° 33′ 07.2268″[2]
Apparent magnitude (V) +6.587[3]
Characteristics
Evolutionary stage Main sequence
Spectral type F8V[4]
Astrometry
Radial velocity (Rv)0.58±0.12[2] km/s
Proper motion (μ) RA: +306.91 mas/yr[2]
Dec.: −239.244 mas/yr[2]
Parallax (π)37.0117 ± 0.0173 mas[2]
Distance88.12 ± 0.04 ly
(27.02 ± 0.01 pc)
Absolute magnitude (MV)+4.42[5]
Details
Mass1.09+0.06
−0.31[6] M☉
Radius1.061[7] R☉
Luminosity1.411[7] L☉
Surface gravity (log g)4.0[8] cgs
Temperature6,039[5] K
Metallicity [Fe/H]+0.25[5] dex
Rotational velocity (v sin i)6[8] km/s
Age2.5[5] Gyr
Other designations
54 Cas, BD+70 163, HD 12800, HIP 10031, G 244-50
Database references
SIMBADdata

54 Cassiopeiae is a star in the northern constellation Cassiopeia. Located 88 ly (27 pc) from Earth,[2] it has an apparent magnitude of 6.59,[3] which makes it hard to be seen by the naked eye even from dark skies. Its absolute magnitude is 4.4.[5] It is a F-type main-sequence star with a stellar classification F8V, currently fusing atoms of hydrogen into helium at its core.[4]

Astrometric measurements by the Gaia spacecraft suggested the presence of a planetary companion to 54 Cassiopeiae, seven times more massive than Jupiter and with an orbital period of 401 days (1.10 years).[9][6] This was later rejected by the Gaia team as a false positive caused by a software error.[10] Radial velocity observations also show no evidence for this planet.[11]

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  2. ^ a b c d e f Cite error: The named reference dr3 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference geneva was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference hinkel was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference geneva2009 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference sahlmann was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference tycho-gaia was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference latham was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference GaiaDR3Exoplanets was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference GaiaFP was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Sozzetti2024 was invoked but never defined (see the help page).