21441+2845 STF 2822 BD
21h 44m 08.46s +28° 44' 34.6" P.A. 45.00 sep 196.7 mag 6.18,6.94 Sp G2V dist. 22.24 pc (72.55 l.y.)
Coord 2000 |
21441+2845 |
|
Discov num |
STF2822 |
|
Comp |
BD |
|
Coord arcsec 2000 |
21 44 08.46 +28 44 34.6 |
|
Date first |
1823 |
|
Date last |
2012 |
|
Obs |
24 |
|
Pa first |
60 |
|
Pa last |
45 |
|
P.A. Now (θ) |
45° |
|
Sep first |
213.9 |
|
Sep last |
196.7 |
|
Sep. Now (ρ) |
196.7" |
|
Mag pri |
6.18 |
|
Mag sec |
6.94 |
|
delta mag (ΔM) |
0.76 |
|
Spectral class |
G2V (yellow) |
|
Pri motion ra |
+260 |
|
Sec motion ra |
-001 |
|
Pri motion dec |
-243 |
|
Sec motion dec |
-054 |
|
Notes |
N
U
(See Notes, Proper motion indicates non-physical) |
|
rPM=0.905
This double is not physical.
21441+2845 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
Mu1 Cyg |
89940 |
21 44 09 +28 44 33 |
STF 2822 AB |
2020 |
735 |
325 |
1.6 |
4.75 |
6.18 |
1.43 |
Y |
|
Show |
|
89940 |
21 44 09 +28 44 33 |
STF 2822 AC |
2012 |
16 |
292 |
76.6 |
4.75 |
12.93 |
8.18 |
|
|
Show |
|
89940 |
21 44 09 +28 44 33 |
STF 2822 AD |
2019 |
56 |
43 |
197.0 |
4.75 |
6.94 |
2.19 |
|
|
Show |
|
89940 |
21 44 09 +28 44 33 |
FYM 25 AF |
2012 |
3 |
72 |
111.5 |
4.75 |
12.64 |
7.89 |
|
|
Show |
|
89940 |
21 44 09 +28 44 33 |
FYM 25 AG |
2012 |
3 |
73 |
168.1 |
4.75 |
13.77 |
9.02 |
|
|
Show |
|
89944 |
21 44 08 +28 44 35 |
STF 2822 BD |
2012 |
24 |
45 |
196.7 |
6.18 |
6.94 |
0.76 |
|
<=== |
Show |
|
89944 |
21 44 19 +28 46 54 |
ES 521 DE |
2015 |
7 |
286 |
17.5 |
6.94 |
13.13 |
6.19 |
|
|
Show |
|
89944 |
21 44 19 +28 46 54 |
FYM 25 DG |
2012 |
3 |
164 |
89.6 |
6.94 |
13.77 |
6.83 |
|
|
Septuple system
7 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
SAO |
89944 |
|
HIP |
107310 |
|
Tycho2 |
2201-02078-2 |
|
HD |
206826 |
|
HR |
8309 |
|
GC |
30438 |
|
ADS |
15270 |
|
GL |
Gl 836.6A |
|
BD |
BD+28 4169 |
|
Bayer |
Mu 1 Cygni |
|
Bayer name |
Mu1 Cyg |
|
Flamsteed |
78 Cygni |
|
Flamsteed name |
78 Cyg |
|
Distance |
22.24 |
|
Distance ly |
72.55 |
|
Bayer greek |
μ1 Cyg |
|