18310+3115 A 247
18h 30m 57.76s +31° 14' 43.9" P.A. 57.00 sep 3.0 mag 8.75,11.83 Sp K0 dist. 909.09 pc (2965.45 l.y.)
| Coord 2000 |
18310+3115 |
|
Discov num |
A 247 |
|
Comp |
|
|
Coord arcsec 2000 |
18 30 57.76 +31 14 43.9 |
|
| Date first |
1901 |
|
Date last |
2016 |
|
Obs |
12 |
|
| Pa first |
56 |
|
Pa last |
57.1 |
|
P.A. Now (θ) |
57.1° |
|
| Sep first |
2.7 |
|
Sep last |
3.017 |
|
Sep. Now (ρ) |
3.017" |
|
| Mag pri |
8.75 |
|
Mag sec |
11.83 |
|
delta mag (ΔM) |
3.08 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+006 |
|
Sec motion ra |
+008 |
|
| Pri motion dec |
-011 |
|
Sec motion dec |
-007 |
|
| Notes |
|
|
rPM=0.357
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lyra |
|
HIP |
90746 |
|
Tycho2 |
2624-00529-1 |
|
Gaia DR2 |
4588919638042776192 |
|
| BD |
BD+31 3282 |
|
Distance |
909.09 |
|
Distance ly |
2965.45 |
|
