21172+3936 LDS 2504 BC
21h 17m 14.71s +39° 36' 25.0" P.A. 67.00 sep 23.5 mag 12.44,19.50
| Coord 2000 |
21172+3936 |
|
Discov num |
LDS2504 |
|
Comp |
BC |
|
Coord arcsec 2000 |
21 17 14.71 +39 36 25.0 |
|
| Date first |
1954 |
|
Date last |
2015 |
|
Obs |
5 |
|
| Pa first |
67 |
|
Pa last |
66.5 |
|
P.A. Now (θ) |
66.5° |
|
| Sep first |
25.0 |
|
Sep last |
23.524 |
|
Sep. Now (ρ) |
23.524" |
|
| Mag pri |
12.44 |
|
Mag sec |
19.50 |
|
delta mag (ΔM) |
7.06 |
|
Spectral class |
|
|
| Pri motion ra |
+010 |
|
Sec motion ra |
-002 |
|
| Pri motion dec |
+002 |
|
Sec motion dec |
+012 |
|
| Notes |
|
|
rPM=1.284
This double is not physical.
21172+3936 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 17 13 +39 36 27 |
SEI 1490 AB |
2015 |
9 |
95 |
20.1 |
11.42 |
12.44 |
1.02 |
|
|
| Show |
|
|
21 17 15 +39 36 25 |
LDS 2504 BC |
2015 |
5 |
67 |
23.5 |
12.44 |
19.50 |
7.06 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Gaia DR2 |
1965225714363739648 |
|
