02573+3156 DCH 116 (21 Per)
02h 57m 17.28s +31° 56' 03.2" P.A. 46.00 sep 1.1 mag 5.20,9.80 Sp A2V dist. 98.04 pc (319.81 l.y.)
| Coord 2000 |
02573+3156 |
|
Discov num |
DCH 116 |
|
Comp |
|
|
Coord arcsec 2000 |
02 57 17.28 +31 56 03.2 |
|
| Date first |
2015 |
|
Date last |
2017 |
|
Obs |
2 |
|
| Pa first |
46 |
|
Pa last |
45.6 |
|
P.A. Now (θ) |
45.6° |
|
| Sep first |
1.1 |
|
Sep last |
1.063 |
|
Sep. Now (ρ) |
1.063" |
|
| Mag pri |
5.20 |
|
Mag sec |
9.80 |
|
delta mag (ΔM) |
4.6 |
|
Spectral class |
A2V (white) |
|
| Pri motion ra |
+002 |
|
Sec motion ra |
|
|
| Pri motion dec |
-030 |
|
Sec motion dec |
|
|
| Notes |
N
K
(See Notes, K-band or other infrared magnitudes) |
|
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
21 Per |
|
Var name |
LT Per |
|
Constellation |
Perseus |
|
SAO |
56031 |
|
| HIP |
13775 |
|
Tycho2 |
2330-02043-1 |
|
HD |
18296 |
|
HR |
873 |
|
| GC |
3544 |
|
BD |
BD+31 509 |
|
Flamsteed |
21 Persei |
|
Flamsteed name |
21 Per |
|
| FK5 |
2205 |
|
Distance |
98.04 |
|
Distance ly |
319.81 |
|
