21117+3818 SMA 136
21h 11m 46.82s +38° 16' 56.8" P.A. 122.00 sep 3.8 mag 10.90,11.60
Coord 2000 |
21117+3818 |
|
Discov num |
SMA 136 |
|
Comp |
|
|
Coord arcsec 2000 |
21 11 46.82 +38 16 56.8 |
|
Date first |
1923 |
|
Date last |
2016 |
|
Obs |
9 |
|
Pa first |
142 |
|
Pa last |
121.9 |
|
P.A. Now (θ) |
121.9° |
|
Sep first |
4.0 |
|
Sep last |
3.8 |
|
Sep. Now (ρ) |
3.8" |
|
Mag pri |
10.90 |
|
Mag sec |
11.60 |
|
delta mag (ΔM) |
0.7 |
|
Spectral class |
|
|
Pri motion ra |
-010 |
|
Sec motion ra |
-002 |
|
Pri motion dec |
-022 |
|
Sec motion dec |
-020 |
|
Notes |
N
(See Notes) |
|
rPM=0.341
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
Gaia DR2 |
1868972512271244928 |
|