21077+4851 ES 818 BC
21h 07m 43.23s +48° 51' 55.4" P.A. 137.00 sep 2.2 mag 11.00,12.00
Coord 2000 |
21077+4851 |
|
Discov num |
ES 818 |
|
Comp |
BC |
|
Coord arcsec 2000 |
21 07 43.23 +48 51 55.4 |
|
Date first |
1909 |
|
Date last |
2015 |
|
Obs |
2 |
|
Pa first |
81 |
|
Pa last |
137.3 |
|
P.A. Now (θ) |
137.3° |
|
Sep first |
2.4 |
|
Sep last |
2.248 |
|
Sep. Now (ρ) |
2.248" |
|
Mag pri |
11.00 |
|
Mag sec |
12.00 |
|
delta mag (ΔM) |
1 |
|
Spectral class |
|
|
Pri motion ra |
-010 |
|
Sec motion ra |
|
|
Pri motion dec |
+014 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
21077+4851 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
50479 |
21 07 40 +48 51 19 |
ES 818 AB |
2015 |
5 |
39 |
48.6 |
7.83 |
12.72 |
4.89 |
|
|
Show |
|
|
21 07 43 +48 51 55 |
ES 818 BC |
2015 |
2 |
137 |
2.2 |
11.00 |
12.00 |
1.00 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
Gaia DR2 |
2165583022457356160 |
|