Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lynx |
Right ascension | 06h 17m 54.81907s [2] |
Declination | +61° 30′ 55.0251″ [2] |
Apparent magnitude (V) | 4.95 [3] |
Characteristics | |
Evolutionary stage | asymptotic giant branch [4] |
Spectral type | M3IIIab [5] |
U−B color index | +1.96 [3] |
B−V color index | +1.83 [3] |
Variable type | Lb? [6] |
Astrometry | |
Radial velocity (Rv) | +11.56±0.44 [7] km/s |
Proper motion (μ) |
RA: −10.59±0.36
[2]
mas/
yr Dec.: −3.11±0.29 [2] mas/ yr |
Parallax (π) | 5.11 ± 0.33 mas [2] |
Distance | 640 ± 40
ly (200 ± 10 pc) |
Absolute magnitude (MV) | −1.44 [8] |
Details | |
Radius | 156 [9] R☉ |
Luminosity | 2,848 [10] L☉ |
Temperature | 3,485 [10] K |
Other designations | |
Database references | |
SIMBAD | data |
1 Lyncis is a single [5] star in the northern constellation of Lynx. It is also known by its variable star designation of UW Lyncis; 1 Lyncis is the Flamsteed designation. This object is visible to the naked eye as a faint, reddish-hued star with an apparent visual magnitude of 4.95. [3] It is moving further from the Earth with a heliocentric radial velocity of 12 km/s. [7]
The star is an aging red giant of spectral type M3IIIab, [5] currently on the asymptotic giant branch, [4] having exhausted the hydrogen at its core and evolved away from the main sequence. It has been classified as a possible slow irregular variable, [6] after being found to be slightly variable in 1969 by Olin J. Eggen. [12] Its changes in brightness are complex, with two shorter changeable periods of 35–40 and 47–50 days due to the star's pulsations, and a longer period of 1,500 days possibly due to the star's rotation or convectively induced oscillatory thermal (COT) mode. [13] The star has expanded to 156 [9] times the Sun's radius and it is radiating 2,848 [10] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 3,485 K. [10]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lynx |
Right ascension | 06h 17m 54.81907s [2] |
Declination | +61° 30′ 55.0251″ [2] |
Apparent magnitude (V) | 4.95 [3] |
Characteristics | |
Evolutionary stage | asymptotic giant branch [4] |
Spectral type | M3IIIab [5] |
U−B color index | +1.96 [3] |
B−V color index | +1.83 [3] |
Variable type | Lb? [6] |
Astrometry | |
Radial velocity (Rv) | +11.56±0.44 [7] km/s |
Proper motion (μ) |
RA: −10.59±0.36
[2]
mas/
yr Dec.: −3.11±0.29 [2] mas/ yr |
Parallax (π) | 5.11 ± 0.33 mas [2] |
Distance | 640 ± 40
ly (200 ± 10 pc) |
Absolute magnitude (MV) | −1.44 [8] |
Details | |
Radius | 156 [9] R☉ |
Luminosity | 2,848 [10] L☉ |
Temperature | 3,485 [10] K |
Other designations | |
Database references | |
SIMBAD | data |
1 Lyncis is a single [5] star in the northern constellation of Lynx. It is also known by its variable star designation of UW Lyncis; 1 Lyncis is the Flamsteed designation. This object is visible to the naked eye as a faint, reddish-hued star with an apparent visual magnitude of 4.95. [3] It is moving further from the Earth with a heliocentric radial velocity of 12 km/s. [7]
The star is an aging red giant of spectral type M3IIIab, [5] currently on the asymptotic giant branch, [4] having exhausted the hydrogen at its core and evolved away from the main sequence. It has been classified as a possible slow irregular variable, [6] after being found to be slightly variable in 1969 by Olin J. Eggen. [12] Its changes in brightness are complex, with two shorter changeable periods of 35–40 and 47–50 days due to the star's pulsations, and a longer period of 1,500 days possibly due to the star's rotation or convectively induced oscillatory thermal (COT) mode. [13] The star has expanded to 156 [9] times the Sun's radius and it is radiating 2,848 [10] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 3,485 K. [10]