18551+1717 COU 721 AB (HD 230061)
18h 55m 08.10s +17° 17' 18.1" P.A. 302.00 sep 3.3 mag 9.30,11.40 Sp G0
| Coord 2000 |
18551+1717 |
|
Discov num |
COU 721 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 55 08.10 +17 17 18.1 |
|
| Date first |
1971 |
|
Date last |
2016 |
|
Obs |
4 |
|
| Pa first |
305 |
|
Pa last |
302.4 |
|
P.A. Now (θ) |
302.4° |
|
| Sep first |
3.0 |
|
Sep last |
3.311 |
|
Sep. Now (ρ) |
3.311" |
|
| Mag pri |
9.30 |
|
Mag sec |
11.40 |
|
delta mag (ΔM) |
2.1 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
-019 |
|
Sec motion ra |
|
|
| Pri motion dec |
-001 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
18551+1717 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 230061 |
|
18 55 08 +17 17 18 |
COU 721 AB |
2016 |
4 |
302 |
3.3 |
9.30 |
11.40 |
2.10 |
|
<=== |
| Show |
|
|
18 55 08 +17 17 18 |
COU 721 AC |
2015 |
9 |
149 |
17.5 |
9.30 |
11.00 |
1.70 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 230061 |
|
Constellation |
Hercules |
|
Tycho2 |
1588-01680-1 |
|
Gaia DR2 |
4517134138794579072 |
|
| HD |
230061 |
|
