2 Camelopardalis

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Template:Short description

2 Camelopardalis
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.36[2]
Characteristics
A
Spectral type A8V[3]
U−B Template:Engvar +0.05[2]
B−V Template:Engvar +0.34[2]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[4] km/s
Proper motion (μ) RA: +44.269[1] mas/yr
Dec.: −77.004[1] mas/yr
Parallax (π)15.3220±0.3790 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Orbit[5]
Primary2 Cam A
Companion2 Cam B
Period (P)26.34 ± 0.05 yr
Semi-major axis (a)0.1727 ± 0.0023″
Eccentricity (e)0.846 ± 0.005
Inclination (i)113.3 ± 3.4°
Longitude of the node (Ω)12.6 ± 2.5°
Periastron epoch (T)B 1988.98 ± 0.03
Argument of periastron (ω)
(secondary)
42.9 ± 2.6°
Orbit[5]
Primary2 Cam AB
Companion2 Cam C
Period (P)660 yr
Semi-major axis (a)1.666 ± 0.019″
Eccentricity (e)0.405 ± 0.015
Inclination (i)132.5 ± 1.9°
Longitude of the node (Ω)286.2 ± 1.8°
Periastron epoch (T)B 2011.7 ± 2.7
Argument of periastron (ω)
(secondary)
105.1 ± 5.4°
Details[5]
A
Mass1.94 Template:Solar mass
B
Mass1.45 Template:Solar mass
Metallicity [Fe/H]{{{metal_fe2}}} dex
C
Mass1.5 Template:Solar mass
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist
Database references
SIMBAD2 Cam
2 Cam AB
2 Cam C

Script error: No such module "Check for unknown parameters".

2 Camelopardalis is a triple star[6] system in the northern circumpolar constellation of Camelopardalis, next to the southern constellation border with Perseus. It is dimly visible to the naked eye with a combined apparent visual magnitude of 5.36.[2] The system is located at a distance of about Script error: No such module "convert". from the Sun, based on its parallax.[1] It is drifting further away with a radial velocity of +20 km/s.[4]

The primary member of 2 Camelopardalis, designated component A, is an A-type main-sequence star with a spectral type of A8V. It has an apparent magnitude of 5.86, and has a secondary with an apparent magnitude of 7.35, designated component B.[7] The two orbit each other on a very eccentric orbit with a period of 26.34 years.[5] Further out, there is an eight-magnitude companion (designated component C), orbiting once every few hundred years.[5] As the third star was previously thought to be relatively massive for its luminosity, it was suspected of being a binary star itself,[8] but the current estimate of component C's magnitude as a single star matches its absolute magnitude.[5]

References

<templatestyles src="Reflist/styles.css" />

  1. a b c d e f Template:Cite DR2
  2. a b c d Script error: No such module "Citation/CS1".
  3. Script error: No such module "Citation/CS1".
  4. a b Script error: No such module "Citation/CS1".
  5. a b c d e f Script error: No such module "Citation/CS1".
  6. Script error: No such module "citation/CS1".
  7. Script error: No such module "citation/CS1".
  8. Script error: No such module "Citation/CS1".

Script error: No such module "Check for unknown parameters".

Template:Stars of Camelopardalis