21098+3504 ES 2257 BC
21h 09m 46.63s +35° 04' 20.7" P.A. 260.00 sep 5.5 mag 11.46,13.60
Coord 2000 |
21098+3504 |
|
Discov num |
ES 2257 |
|
Comp |
BC |
|
Coord arcsec 2000 |
21 09 46.63 +35 04 20.7 |
|
Date first |
1926 |
|
Date last |
2015 |
|
Obs |
9 |
|
Pa first |
271 |
|
Pa last |
260.1 |
|
P.A. Now (θ) |
260.1° |
|
Sep first |
4.2 |
|
Sep last |
5.464 |
|
Sep. Now (ρ) |
5.464" |
|
Mag pri |
11.46 |
|
Mag sec |
13.60 |
|
delta mag (ΔM) |
2.14 |
|
Spectral class |
|
|
Pri motion ra |
+002 |
|
Sec motion ra |
-009 |
|
Pri motion dec |
+006 |
|
Sec motion dec |
+002 |
|
Notes |
|
|
rPM=1.27
This double is not physical.
21098+3504 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
|
21 09 48 +35 04 22 |
ES 2257 AB |
2015 |
12 |
268 |
15.2 |
11.29 |
11.46 |
0.17 |
|
|
Show |
|
|
21 09 47 +35 04 21 |
ES 2257 BC |
2015 |
9 |
260 |
5.5 |
11.46 |
13.60 |
2.14 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
Tycho2 |
2710-00294-1 |
|
Gaia DR2 |
1867262733022876160 |
|