21174+4020 SEI 1492
21h 17m 20.74s +40° 19' 56.8" P.A. 246.00 sep 24.6 mag 11.46,12.52
| Coord 2000 |
21174+4020 |
|
Discov num |
SEI1492 |
|
Comp |
|
|
Coord arcsec 2000 |
21 17 20.74 +40 19 56.8 |
|
| Date first |
1895 |
|
Date last |
2015 |
|
Obs |
12 |
|
| Pa first |
245 |
|
Pa last |
246.2 |
|
P.A. Now (θ) |
246.2° |
|
| Sep first |
25.3 |
|
Sep last |
24.643 |
|
Sep. Now (ρ) |
24.643" |
|
| Mag pri |
11.46 |
|
Mag sec |
12.52 |
|
delta mag (ΔM) |
1.06 |
|
Spectral class |
|
|
| Pri motion ra |
-007 |
|
Sec motion ra |
-004 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
-004 |
|
| Notes |
|
|
rPM=0.429
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3173-03032-1 |
|
Gaia DR2 |
1965635733426915712 |
|
