21115+7050 HDS 3019 AB (HD 202431)
21h 11m 32.40s +70° 49' 31.4" P.A. 136.00 sep 0.3 mag 7.71,10.25 Sp A3 dist. 104.71 pc (341.56 l.y.)
| Coord 2000 |
21115+7050 |
|
Discov num |
HDS3019 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 11 32.40 +70 49 31.4 |
|
| Date first |
1991 |
|
Date last |
1991 |
|
Obs |
1 |
|
| Pa first |
136 |
|
Pa last |
136 |
|
P.A. Now (θ) |
136° |
|
| Sep first |
0.3 |
|
Sep last |
0.319 |
|
Sep. Now (ρ) |
0.319" |
|
| Mag pri |
7.71 |
|
Mag sec |
10.25 |
|
delta mag (ΔM) |
2.54 |
|
Spectral class |
A3 (white) |
|
| Pri motion ra |
+016 |
|
Sec motion ra |
|
|
| Pri motion dec |
-028 |
|
Sec motion dec |
|
|
| Notes |
W
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 202431 |
|
Constellation |
Cepheus |
|
SAO |
9982 |
|
HIP |
104615 |
|
| Tycho2 |
4464-01860-1 |
|
HD |
202431 |
|
BD |
BD+70 1171 |
|
Distance |
104.71 |
|
| Distance ly |
341.56 |
|
