21099+4257 LDS 2492
21h 09m 49.77s +42° 57' 20.6" P.A. 135.00 sep 21.5 mag 15.37,15.64
| Coord 2000 |
21099+4257 |
|
Discov num |
LDS2492 |
|
Comp |
|
|
Coord arcsec 2000 |
21 09 49.77 +42 57 20.6 |
|
| Date first |
1954 |
|
Date last |
2018 |
|
Obs |
12 |
|
| Pa first |
135 |
|
Pa last |
135.4 |
|
P.A. Now (θ) |
135.4° |
|
| Sep first |
21.0 |
|
Sep last |
21.456 |
|
Sep. Now (ρ) |
21.456" |
|
| Mag pri |
15.37 |
|
Mag sec |
15.64 |
|
delta mag (ΔM) |
0.27 |
|
Spectral class |
|
|
| Pri motion ra |
+202 |
|
Sec motion ra |
+202 |
|
| Pri motion dec |
-019 |
|
Sec motion dec |
-019 |
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Gaia DR2 |
1970054533224389888 |
|
