21050+1243 STF 2750 A,BC (HD 200757)
21h 05m 02.23s +12° 43' 20.5" P.A. 280.00 sep 16.0 mag 8.96,10.40 Sp K0 dist. 128.7 pc (419.82 l.y.)
| Coord 2000 |
21050+1243 |
|
Discov num |
STF2750 |
|
Comp |
A,BC |
|
Coord arcsec 2000 |
21 05 02.23 +12 43 20.5 |
|
| Date first |
1825 |
|
Date last |
2016 |
|
Obs |
45 |
|
| Pa first |
275 |
|
Pa last |
279.8 |
|
P.A. Now (θ) |
279.8° |
|
| Sep first |
17.5 |
|
Sep last |
16.008 |
|
Sep. Now (ρ) |
16.008" |
|
| Mag pri |
8.96 |
|
Mag sec |
10.40 |
|
delta mag (ΔM) |
1.44 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+049 |
|
Sec motion ra |
+055 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
-003 |
|
| Notes |
N
V
(See Notes, Proper motion indicates physical) |
|
rPM=0.131 (< 0.3, Physical double)
This double is physical.
21050+1243 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 200757 |
106823 |
21 05 02 +12 43 20 |
STF 2750 A,BC |
2016 |
45 |
280 |
16.0 |
8.96 |
10.40 |
1.44 |
|
<=== |
| Show |
|
106823 |
21 05 02 +12 43 20 |
SLE 518 AD |
1982 |
1 |
119 |
4.6 |
8.96 |
11.40 |
2.44 |
|
|
| Show |
|
|
21 05 01 +12 43 23 |
A 1690 BC |
2017 |
16 |
113 |
0.4 |
10.94 |
11.42 |
0.48 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 200757 |
|
Constellation |
Delphinus |
|
SAO |
106823 |
|
HIP |
104067 |
|
| Tycho2 |
1112-02062-1 |
|
Gaia DR2 |
1757475711010043520 |
|
HD |
200757 |
|
GC |
29442 |
|
| BD |
BD+12 4541 |
|
Distance |
128.7 |
|
Distance ly |
419.82 |
|
