21 Lyncis, a white main-sequence star in Lynx
21 Lyncis is a white main-sequence star in the constellation Lynx. At 273 light years away, it shines at an apparent visual magnitude of 4.61.
21 Lyncis (HIP 36145)
21 Lyncis is a white main-sequence star in the constellation Lynx. At 273 light years away, it shines at an apparent visual magnitude of 4.61. It is moving through the Galaxy at a speed of 33.4 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,100 and 27,600 light years from the center of the Galaxy. It came closest to the Sun 2.0 million years ago when it had brightened to magnitude 3.49 from a distance of 164 light years.
Sky position: RA 7h 26.7m, Dec +49° 12.6'
Common designations: 21 Lyncis, HIP 36145, HD 58142
Brightest stars in Lynx:
(list all)
| Rank | Mag. | Star |
| 1 | 3.14 | Alpha Lyncis |
| 2 | 3.82 | 38 Lyncis |
| 3 | 3.96 | 10 Ursae Majoris |
| 4 | 4.25 | Alsciaukat |
| 5 | 4.35 | 15 Lyncis |
| 6 | 4.44 | 2 Lyncis |
| 7 | 4.56 | HR 3612 |
8
| 4.61
) 21 Lyncis
| Rank | Mag. | Star |
| 9 | 4.78 | 27 Lyncis |
| 10 | 4.81 | HR 3809 |
| 11 | 4.86 | 12 Lyncis |
| 12 | 4.90 | 16 Lyncis |
| 13 | 4.93 | 24 Lyncis |
| 14 | 5.00 | HR 2751 |
| 15 | 5.01 | 1 Lyncis |
| 16 | 5.15 | HD 62647 |
| 17 | 5.15 | 35 Lyncis |
Hover over other bright stars to identify or click to jump.
Galactic Orbit of 21 Lyncis
(compared to the Sun)
E
ccentricity: 9.0% vs. 16.0%Angle φ : -69.4°vs. 26.0°
Semi-major axis : 7,775 pc vs. 8,686 pc
Semi-minor axis: 7,744 pc vs. 8,574 pc
Focus-to-center
: 702 pcvs. 1,388 pcSemilatus rectum : 7,712 pc vs. 8,464 pc
Perigalacticon: 7,073 pc vs. 7,297 pc
Apogalacticon
: 8,478 pcvs. 10,074 pcSome Tabulated XHIP Data for 21 Lyncis
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 111.67858748° ±0.20 mas | -10.22 ±0.25 mas/yr. |
| Declination: | 49.21164499° ±0.16 mas | -49.29 ±0.17 mas/yr. |
| Galactic Longitude: | 168.71359542° | 45.92 mas/yr. |
| Galactic Latitude: | 25.74556402° | -20.63 mas/yr. |
Parallax: 11.92 ± 0.24 mas
Spectrography
Spectral Type: A0.5Vs 1995ApJS...99..135A.
Radial Velocity: 26.80 ±0.10 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
4.61
-0.01
V
4.61
-0.01
R
I
4.59
-0.02
J
4.70
0.08
H
4.69
0.08
K
4.57
-0.05
B-V: 0.00 V-I: +0.02
Derivations
Heliocentric distance: 83.85 pc (2.0% margin of error)
Galactocentric distance: 7,474 pc
Transverse velocity: 20.0 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -74.1 pc | 14.8 pc | 36.4 pc |
| Velocity (U, V, W) | -30.7 km/s | -12.5 km/s | 4.3 km/s |