20454+4816 UC 254 (HD 197988)
20h 45m 24.35s +48° 16' 25.9" P.A. 181.00 sep 17.9 mag 8.37,12.41 Sp F0V
| Coord 2000 |
20454+4816 |
|
Discov num |
UC 254 |
|
Comp |
|
|
Coord arcsec 2000 |
20 45 24.35 +48 16 25.9 |
|
| Date first |
1999 |
|
Date last |
2016 |
|
Obs |
10 |
|
| Pa first |
181 |
|
Pa last |
181.4 |
|
P.A. Now (θ) |
181.4° |
|
| Sep first |
17.8 |
|
Sep last |
17.901 |
|
Sep. Now (ρ) |
17.901" |
|
| Mag pri |
8.37 |
|
Mag sec |
12.41 |
|
delta mag (ΔM) |
4.04 |
|
Spectral class |
F0V (yellow-white) |
|
| Pri motion ra |
+059 |
|
Sec motion ra |
+064 |
|
| Pri motion dec |
+087 |
|
Sec motion dec |
+082 |
|
| Notes |
V
(Proper motion indicates physical) |
|
rPM=0.067 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 197988 |
|
Constellation |
Cygnus |
|
SAO |
50030 |
|
Tycho2 |
3578-00245-1 |
|
| Gaia DR2 |
2167561559263854336 |
|
HD |
197988 |
|
DM |
BD+47 3180 |
|
