21252+1828 COU 430 AB (HD 203991)
21h 25m 09.48s +18° 27' 45.4" P.A. 229.00 sep 0.8 mag 7.95,9.41 Sp A0 dist. 177.3 pc (578.35 l.y.)
Coord 2000 |
21252+1828 |
|
Discov num |
COU 430 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 25 09.48 +18 27 45.4 |
|
Date first |
1969 |
|
Date last |
2018 |
|
Obs |
24 |
|
Pa first |
239 |
|
Pa last |
229.2 |
|
P.A. Now (θ) |
229.2° |
|
Sep first |
0.5 |
|
Sep last |
0.79 |
|
Sep. Now (ρ) |
0.79" |
|
Mag pri |
7.95 |
|
Mag sec |
9.41 |
|
delta mag (ΔM) |
1.46 |
|
Spectral class |
A0 (white) |
|
Pri motion ra |
+009 |
|
Sec motion ra |
+009 |
|
Pri motion dec |
-005 |
|
Sec motion dec |
-005 |
|
Notes |
|
|
Nature of this double is uncertain.
21252+1828 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 203991 |
107115 |
21 25 09 +18 27 45 |
COU 430 AB |
2018 |
24 |
229 |
0.8 |
7.95 |
9.41 |
1.46 |
|
<=== |
Show |
|
107115 |
21 25 09 +18 27 45 |
ARY 70 AC |
2015 |
16 |
98 |
63.0 |
7.74 |
9.96 |
2.22 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 203991 |
|
Constellation |
Pegasus |
|
SAO |
107115 |
|
HIP |
105753 |
|
Tycho2 |
1667-00465-1 |
|
Gaia DR2 |
1785368736161600128 |
|
HD |
203991 |
|
GC |
29997 |
|
BD |
BD+17 4577 |
|
Distance |
177.3 |
|
Distance ly |
578.35 |
|