21558+3716 HO 174 CD
21h 55m 38.57s +37° 14' 03.5" P.A. 262.00 sep 6.0 mag 11.50,11.90
Coord 2000 |
21558+3716 |
|
Discov num |
HO 174 |
|
Comp |
CD |
|
Coord arcsec 2000 |
21 55 38.57 +37 14 03.5 |
|
Date first |
1881 |
|
Date last |
2015 |
|
Obs |
20 |
|
Pa first |
269 |
|
Pa last |
261.8 |
|
P.A. Now (θ) |
261.8° |
|
Sep first |
6.3 |
|
Sep last |
5.98 |
|
Sep. Now (ρ) |
5.98" |
|
Mag pri |
11.50 |
|
Mag sec |
11.90 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
|
|
Pri motion ra |
+020 |
|
Sec motion ra |
-026 |
|
Pri motion dec |
-004 |
|
Sec motion dec |
-010 |
|
Notes |
N
W
R
(See Notes, , Red magnitudes) |
|
rPM=1.665
This double is not physical.
21558+3716 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
|
21 55 48 +37 15 54 |
HO 174 AB |
2016 |
25 |
335 |
7.6 |
10.38 |
10.75 |
0.37 |
|
|
Show |
|
|
21 55 48 +37 15 54 |
HO 174 AC |
2015 |
18 |
226 |
160.4 |
10.38 |
11.50 |
1.12 |
|
|
Show |
|
|
21 55 48 +37 16 01 |
HO 174 BC |
2015 |
9 |
224 |
163.0 |
10.75 |
11.50 |
0.75 |
|
|
Show |
|
|
21 55 39 +37 14 04 |
HO 174 CD |
2015 |
20 |
262 |
6.0 |
11.50 |
11.90 |
0.40 |
|
<=== |
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
Tycho2 |
2731-00737-1 |
|
Gaia DR2 |
1949827986028540800 |
|