21519+4221 HO 172 AB (HD 207966)
21h 51m 52.93s +42° 20' 38.0" P.A. 82.00 sep 10.7 mag 7.93,11.26 Sp G5+M0 dist. 29.33 pc (95.67 l.y.)
| Coord 2000 |
21519+4221 |
|
Discov num |
HO 172 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 51 52.93 +42 20 38.0 |
|
| Date first |
1886 |
|
Date last |
2016 |
|
Obs |
17 |
|
| Pa first |
88 |
|
Pa last |
81.7 |
|
P.A. Now (θ) |
81.7° |
|
| Sep first |
10.5 |
|
Sep last |
10.704 |
|
Sep. Now (ρ) |
10.704" |
|
| Mag pri |
7.93 |
|
Mag sec |
11.26 |
|
delta mag (ΔM) |
3.33 |
|
Spectral class |
G5+M0 (yellow/red) |
|
| Pri motion ra |
-175 |
|
Sec motion ra |
-175 |
|
| Pri motion dec |
-306 |
|
Sec motion dec |
-306 |
|
| Notes |
N
V
(See Notes, Proper motion indicates physical) |
|
This double is physical.
21519+4221 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 207966 |
51378 |
21 51 53 +42 20 38 |
HO 172 AB |
2016 |
17 |
82 |
10.7 |
7.93 |
11.26 |
3.33 |
|
<=== |
| Show |
|
51378 |
21 51 53 +42 20 38 |
HO 172 AC |
2013 |
7 |
40 |
89.7 |
7.93 |
13.31 |
5.38 |
|
|
| Show |
|
51378 |
21 51 53 +42 20 38 |
HO 172 AD |
2003 |
9 |
61 |
480.9 |
7.93 |
8.63 |
0.70 |
|
|
| Show |
|
51378 |
21 51 53 +42 20 38 |
FYM 113 AE |
2015 |
4 |
20 |
64.4 |
7.93 |
14.96 |
7.03 |
|
|
| Show |
|
|
21 51 54 +42 20 39 |
JOD 22 BF |
2008 |
1 |
48 |
2.1 |
11.26 |
17.50 |
6.24 |
|
|
Sextuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 207966 |
|
Constellation |
Cygnus |
|
SAO |
51378 |
|
HIP |
107920 |
|
| Tycho2 |
3193-02107-1 |
|
HD |
207966 |
|
BD |
BD+41 4291 |
|
Distance |
29.33 |
|
| Distance ly |
95.67 |
|
