18153+4054 BVD 261
18h 15m 16.20s +40° 54' 19.5" P.A. 307.00 sep 20.9 mag 17.70,18.20
| Coord 2000 |
18153+4054 |
|
Discov num |
BVD 261 |
|
Comp |
|
|
Coord arcsec 2000 |
18 15 16.20 +40 54 19.5 |
|
| Date first |
1951 |
|
Date last |
2016 |
|
Obs |
10 |
|
| Pa first |
307 |
|
Pa last |
307.2 |
|
P.A. Now (θ) |
307.2° |
|
| Sep first |
21.0 |
|
Sep last |
20.935 |
|
Sep. Now (ρ) |
20.935" |
|
| Mag pri |
17.70 |
|
Mag sec |
18.20 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
|
|
| Pri motion ra |
-072 |
|
Sec motion ra |
-076 |
|
| Pri motion dec |
-145 |
|
Sec motion dec |
-115 |
|
| Notes |
V
(Proper motion indicates physical) |
|
rPM=0.187 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lyra |
|
Gaia DR2 |
2112829347892877952 |
|
