21207+4923 ES 820 BC
21h 20m 45.09s +49° 23' 21.3" P.A. 293.00 sep 3.7 mag 11.61,13.50 Sp F8
| Coord 2000 |
21207+4923 |
|
Discov num |
ES 820 |
|
Comp |
BC |
|
Coord arcsec 2000 |
21 20 45.09 +49 23 21.3 |
|
| Date first |
1902 |
|
Date last |
2016 |
|
Obs |
7 |
|
| Pa first |
289 |
|
Pa last |
293.3 |
|
P.A. Now (θ) |
293.3° |
|
| Sep first |
3.6 |
|
Sep last |
3.67 |
|
Sep. Now (ρ) |
3.67" |
|
| Mag pri |
11.61 |
|
Mag sec |
13.50 |
|
delta mag (ΔM) |
1.89 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
+025 |
|
Sec motion ra |
+008 |
|
| Pri motion dec |
-016 |
|
Sec motion dec |
-003 |
|
| Notes |
|
|
rPM=0.721
Nature of this double is uncertain.
21207+4923 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 20 42 +49 23 03 |
ES 820 AB |
2015 |
11 |
60 |
35.5 |
9.33 |
11.61 |
2.28 |
|
|
| Show |
|
|
21 20 45 +49 23 21 |
ES 820 BC |
2016 |
7 |
293 |
3.7 |
11.61 |
13.50 |
1.89 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Gaia DR2 |
2165086180635478144 |
|
