Phi Serpentis

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Template:Short description

Phi Serpentis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Serpens
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) +5.55[2]
Characteristics
Spectral type K1 IV[3]
U−B Template:Engvar +0.997[2]
B−V Template:Engvar +1.142[2]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[3] km/s
Proper motion (μ) RA: −122.48[1] mas/yr
Dec.: +88.16[1] mas/yr
Parallax (π)13.52±0.44 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+1.33[3]
Details
Mass1.19[3] Template:Solar mass
Radius4.2[4] Template:Solar radius
Luminosity41.7[5] Template:Solar luminosity
Surface gravity (log g)Script error: No such module "val".[6] cgs
TemperatureScript error: No such module "val".[6] K
Metallicity [Fe/H]Script error: No such module "val".[6] dex
Rotational velocity (v sin i)2.0[7] km/s
Age3.42[5] Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
φ Ser, BD+14°2969, HD 142980, HIP 78132, HR 5940, SAO 101834[8]
Database references
SIMBADdata

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Phi Serpentis (φ Ser, φ Serpentis) is a solitary[9] star in the Serpens Caput portion of the equatorial constellation Serpens. Based upon an annual parallax shift of 13.52 mas as seen from Earth, it is located about 241 light years distant. The star is faintly visible to the naked eye with an apparent visual magnitude of +5.55.[2]

At the estimated age of 3.42 billion years,[5] this is an evolved K-type subgiant star with a stellar classification of K1 IV.[3] It has about 1.19[3] times the mass of the Sun and around 4.2[4] times the Sun's radius. The star radiates 41.7[5] times the solar luminosity from its photosphere at an effective temperature of 4,493 K.[6]

References

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  3. ↑ a b c d e f Script error: No such module "citation/CS1".
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  5. ↑ a b c d Script error: No such module "citation/CS1".
  6. ↑ a b c d Script error: No such module "citation/CS1".
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  8. ↑ Template:Cite simbad
  9. ↑ Script error: No such module "citation/CS1".

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Template:Stars of Serpens

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