Nu Cancri

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Template:Short description

Nu Cancri
Template:Location mark
Location of ν Cancri (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cancer[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) +5.46[3]
Characteristics
Spectral type A0 III[4]
U−B Template:Engvar −0.10[3]
B−V Template:Engvar −0.03[3]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[5] km/s
Proper motion (μ) RA: −4.801 mas/yr[2]
Dec.: −1.621 mas/yr[2]
Parallax (π)7.2947±0.1477 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+0.05[1]
Orbit[6]
Period (P)Script error: No such module "convert".
Semi-major axis (a)≥ Script error: No such module "convert".
Eccentricity (e)0.35±0.17
Periastron epoch (T)Script error: No such module "val".
Argument of periastron (ω)
(secondary)		264±9°
Semi-amplitude (K1)
(primary)		7.7±1.3 km/s
Details
ν Cnc A
MassScript error: No such module "val".[7] Template:Solar mass
Luminosity93[7] Template:Solar luminosity
Surface gravity (log g)3.50[8] cgs
Temperature10,250[7] K
Metallicity [Fe/H]Script error: No such module "val".[1] dex
Rotational velocity (v sin i)Script error: No such module "val".[7] km/s
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[9]
Database references
SIMBADdata

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Nu Cancri is a binary star system[6] in the zodiac constellation of Cancer. Its name is a Bayer designation that is Latinised from ν Cancri, and abbreviated Nu Cnc or ν Cnc. This star is faintly visible to the naked eye with an apparent visual magnitude of +5.46.[3] Based upon an annual parallax shift of Script error: No such module "val". as seen from the Earth,[2] the star is located roughly Script error: No such module "convert". away from the Sun. It is drifting closer with a line of sight velocity of −16 km/s.[5]

The binary nature of this system was announced in 1973. This is a single-lined spectroscopic binary system with an orbital period of 3.8 years and an eccentricity of 0.35.[6] The primary, component A, is a white-hued A-type star with a stellar classification of A0 III.[4] It is a magnetic Ap star with a field strength of Script error: No such module "val"., showing abundance peculiarities in strontium, chromium and mercury.[7] This has been studied as a mercury-manganese star that has reached the end of its main sequence lifetime, although it has an unusually low abundance of mercury for a star of this type.[10] The star has 2.8 times the mass of the Sun and is radiating 93 times the Sun's luminosity from its photosphere at an effective temperature of Script error: No such module "val"..[7]

References

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

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Template:Stars of Cancer

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