20118+3936 COU 2415 AB (HD 228242)
20h 11m 50.16s +39° 36' 28.3" P.A. 158.00 sep 0.4 mag 9.80,10.20 Sp B8III
| Coord 2000 |
20118+3936 |
|
Discov num |
COU2415 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 11 50.16 +39 36 28.3 |
|
| Date first |
1987 |
|
Date last |
2014 |
|
Obs |
7 |
|
| Pa first |
138 |
|
Pa last |
157.5 |
|
P.A. Now (θ) |
157.5° |
|
| Sep first |
0.3 |
|
Sep last |
0.361 |
|
Sep. Now (ρ) |
0.361" |
|
| Mag pri |
9.80 |
|
Mag sec |
10.20 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
B8III (blue-white) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
|
|
| Pri motion dec |
-003 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
20118+3936 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 228242 |
|
20 11 50 +39 36 28 |
COU 2415 AB |
2014 |
7 |
158 |
0.4 |
9.80 |
10.20 |
0.40 |
|
<=== |
| Show |
|
|
20 11 50 +39 36 28 |
ES 1973 AB,C |
2011 |
2 |
352 |
4.1 |
10.60 |
12.80 |
2.20 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 228242 |
|
Constellation |
Cygnus |
|
Tycho2 |
3155-02052-1 |
|
HD |
228242 |
|
