18019+3123 SEI 554
18h 01m 53.94s +31° 22' 27.5" P.A. 48.00 sep 23.5 mag 11.59,12.40
| Coord 2000 |
18019+3123 |
|
Discov num |
SEI 554 |
|
Comp |
|
|
Coord arcsec 2000 |
18 01 53.94 +31 22 27.5 |
|
| Date first |
1899 |
|
Date last |
2015 |
|
Obs |
16 |
|
| Pa first |
47 |
|
Pa last |
48.1 |
|
P.A. Now (θ) |
48.1° |
|
| Sep first |
24.1 |
|
Sep last |
23.522 |
|
Sep. Now (ρ) |
23.522" |
|
| Mag pri |
11.59 |
|
Mag sec |
12.40 |
|
delta mag (ΔM) |
0.81 |
|
Spectral class |
|
|
| Pri motion ra |
+001 |
|
Sec motion ra |
+007 |
|
| Pri motion dec |
+022 |
|
Sec motion dec |
+014 |
|
| Notes |
|
|
rPM=0.454
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
Tycho2 |
2621-01775-1 |
|
Gaia DR2 |
4602903742318990592 |
|
