21428+6018 HDS 3093 (HD 239743)
21h 42m 46.63s +60° 17' 45.3" P.A. 267.00 sep 0.1 mag 9.35,10.96 Sp B2V dist. 925.93 pc (3020.38 l.y.)
| Coord 2000 |
21428+6018 |
|
Discov num |
HDS3093 |
|
Comp |
|
|
Coord arcsec 2000 |
21 42 46.63 +60 17 45.3 |
|
| Date first |
1991 |
|
Date last |
2007 |
|
Obs |
2 |
|
| Pa first |
282 |
|
Pa last |
267.3 |
|
P.A. Now (θ) |
267.3° |
|
| Sep first |
0.1 |
|
Sep last |
0.14 |
|
Sep. Now (ρ) |
0.14" |
|
| Mag pri |
9.35 |
|
Mag sec |
10.96 |
|
delta mag (ΔM) |
1.61 |
|
Spectral class |
B2V (blue-white) |
|
| Pri motion ra |
-003 |
|
Sec motion ra |
|
|
| Pri motion dec |
-002 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 239743 |
|
Constellation |
Cepheus |
|
SAO |
19594 |
|
HIP |
107199 |
|
| Tycho2 |
4249-01742-1 |
|
Gaia DR2 |
2203709550206230016 |
|
HD |
239743 |
|
BD |
BD+59 2412 |
|
| Distance |
925.93 |
|
Distance ly |
3020.38 |
|
