HD 7853

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Template:Short description

HD 7853
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 6.497[3]
Characteristics
Spectral type kA5hF1mF2[4]
B−V Template:Engvar 0.217[3]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[5] km/s
Proper motion (μ) RA: Script error: No such module "val".[2] mas/yr
Dec.: Script error: No such module "val".[2] mas/yr
Parallax (π)7.78±0.70 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+0.92[1]
Details
A
Mass2.3[6] Template:Solar mass
Radius3.5[6] Template:Solar radius
Luminosity41[6] Template:Solar luminosity
Surface gravity (log g)3.66[6] cgs
Temperature7,869[6] K
Age722[6] Myr
B
Mass1.2[7] Template:Solar mass
Radius1.3[7] Template:Solar radius
Luminosity2.2[7] Template:Solar luminosity
Surface gravity (log g)4.18[7] cgs
Temperature6,155[7] K
Metallicity [Fe/H]{{{metal_fe2}}} dex
Age3.8[7] Gyr
Other designations
HR 379, BD+36 220, SAO 54592, HIP 6140, WDS J01188+3724, ADS 1055
Database references
SIMBADA
B

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HD 7853 is a double star in the constellation Andromeda. With an apparent magnitude of 6.46, it can barely be seen with the naked eye even on the best of nights. The system is located approximately Script error: No such module "convert". distant, and the brighter star is an Am star, meaning that it has unusual metallic absorption lines.[8] The spectral classification of kA5hF1mF2 means that it would have a spectral class of A5 if it were based solely on the calcium K line, F2 if based on the lines of other metals, and F1 if based on the hydrogen absorption lines.[4] The two components are six arc-seconds apart and the secondary is three magnitudes fainter than the primary.[9]

References

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  1. ↑ a b Template:Cite XHIP
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  6. ↑ a b c d e f Template:Cite Gaia DR3
  7. ↑ a b c d e f Template:Cite Gaia DR3
  8. ↑ Script error: No such module "citation/CS1".
  9. ↑ Script error: No such module "citation/CS1".

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Template:Stars of Andromeda


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