18399+5815 A 251 AC
18h 39m 53.58s +58° 14' 55.6" P.A. 78.00 sep 13.5 mag 8.10,14.60 Sp F2IV dist. 500 pc (1631 l.y.)
| Coord 2000 |
18399+5815 |
|
Discov num |
A 251 |
|
Comp |
AC |
|
Coord arcsec 2000 |
18 39 53.58 +58 14 55.6 |
|
| Date first |
1901 |
|
Date last |
2015 |
|
Obs |
6 |
|
| Pa first |
63 |
|
Pa last |
77.7 |
|
P.A. Now (θ) |
77.7° |
|
| Sep first |
14.7 |
|
Sep last |
13.529 |
|
Sep. Now (ρ) |
13.529" |
|
| Mag pri |
8.10 |
|
Mag sec |
14.60 |
|
delta mag (ΔM) |
6.5 |
|
Spectral class |
F2IV (yellow-white) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
|
|
| Pri motion dec |
+020 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
18399+5815 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 173051 |
31097 |
18 39 54 +58 14 56 |
A 251 AB |
2017 |
8 |
53 |
4.0 |
8.10 |
11.62 |
3.52 |
|
|
| Show |
|
31097 |
18 39 54 +58 14 56 |
A 251 AC |
2015 |
6 |
78 |
13.5 |
8.10 |
14.60 |
6.50 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Draco |
|
SAO |
31097 |
|
HIP |
91526 |
|
Tycho2 |
3917-00913-1 |
|
| Gaia DR2 |
2154319281727210368 |
|
HD |
173051 |
|
BD |
BD+58 1827 |
|
Distance |
500 |
|
| Distance ly |
1631 |
|
