21190+3905 SEI 1498 AB
21h 18m 54.68s +39° 05' 27.7" P.A. 89.00 sep 28.9 mag 11.79,12.64
| Coord 2000 |
21190+3905 |
|
Discov num |
SEI1498 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 18 54.68 +39 05 27.7 |
|
| Date first |
1895 |
|
Date last |
2017 |
|
Obs |
13 |
|
| Pa first |
91 |
|
Pa last |
88.7 |
|
P.A. Now (θ) |
88.7° |
|
| Sep first |
28.9 |
|
Sep last |
28.9 |
|
Sep. Now (ρ) |
28.9" |
|
| Mag pri |
11.79 |
|
Mag sec |
12.64 |
|
delta mag (ΔM) |
0.85 |
|
Spectral class |
|
|
| Pri motion ra |
-001 |
|
Sec motion ra |
-004 |
|
| Pri motion dec |
-002 |
|
Sec motion dec |
-005 |
|
| Notes |
|
|
rPM=0.663
Nature of this double is uncertain.
21190+3905 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 18 55 +39 05 28 |
SEI 1498 AB |
2017 |
13 |
89 |
28.9 |
11.79 |
12.64 |
0.85 |
|
<=== |
| Show |
|
|
21 18 57 +39 05 27 |
TOB 220 BC |
2017 |
8 |
75 |
12.5 |
12.64 |
14.90 |
2.26 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Gaia DR2 |
1964965890328462336 |
|
