50 Cassiopeiae

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Template:Short description

50 Cassiopeiae
File:50 Cassiopeiae.jpg
50 Cassiopeiae in optical light
Observation data
Epoch J2000      Equinox J2000
Constellation Cassiopeia[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) +3.95[1]
Characteristics
Evolutionary stage main sequence[3]
Spectral type A2 V[3]
B−V Template:Engvar Script error: No such module "val".[1]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[4] km/s
Proper motion (μ) RA: −43.57[5] mas/yr
Dec.: +22.30[5] mas/yr
Parallax (π)20.76±0.14 mas[5]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)0.54[1]
Details
MassScript error: No such module "val".[3] Template:Solar mass
Radius2.5[6] Template:Solar radius
LuminosityScript error: No such module "val".[3] Template:Solar luminosity
TemperatureScript error: No such module "val".[3] K
Metallicity [Fe/H]Script error: No such module "val".[7] dex
Rotational velocity (v sin i)91[3] km/s
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[8]
Database references
SIMBADdata

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50 Cassiopeiae is a white star in the northern constellation of Cassiopeia. In the past, it had been misidentified as a suspected nebula, and given the number NGC 771.[9] The star is visible to the naked eye, having an apparent visual magnitude of +3.95.[1] Based upon an annual parallax shift of Script error: No such module "val"., it is located 157 light years away. It is moving closer, having a heliocentric radial velocity of −18 km/s,[4] and will approach to within Script error: No such module "convert". in 1.879 million years.[1]

File:50CasLightCurve.png
A light curve for 50 Cassiopeiae, plotted from TESS data[10]

It is an A-type main-sequence star with a stellar classification of A2 V.[3] It is a suspected variable star with a very small amplitude.[11] 50 Cas has an estimated 2.56 times the mass of the Sun,[3] and about 2.5 times the Sun's radius.[6] It is radiating 64 times the Sun's luminosity from its photosphere at an effective temperature of around 9,376 K.[3]

The star was the brightest star in the occasionally used 1775 to 19th century constellation Custos Messium, typically drawn as a depiction of Charles Messier standing on top of the giraffe (Camelopardalis), between Cepheus and Cassiopeia.[12]

References

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  1. ↑ a b c d e f Script error: No such module "citation/CS1".
  2. ↑ a b Template:Cite DR2
  3. ↑ a b c d e f g h i Script error: No such module "citation/CS1".
  4. ↑ a b Script error: No such module "citation/CS1".
  5. ↑ a b c Script error: No such module "Citation/CS1".
  6. ↑ a b Script error: No such module "citation/CS1".
  7. ↑ Script error: No such module "citation/CS1".
  8. ↑ Template:Cite simbad
  9. ↑ Script error: No such module "citation/CS1".
  10. ↑ Script error: No such module "citation/CS1".
  11. ↑ Script error: No such module "Citation/CS1".
  12. ↑ Ian Ridpath's Star Tales - Custos Messium

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External links

  • Script error: No such module "citation/CS1".

Template:Stars of Cassiopeia Template:Catalogs Template:NGC10

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