18018+1254 HEI 554
18h 01m 46.49s +12° 54' 17.9" P.A. 13.00 sep 2.6 mag 11.81,13.10
Coord 2000 |
18018+1254 |
|
Discov num |
HEI 554 |
|
Comp |
|
|
Coord arcsec 2000 |
18 01 46.49 +12 54 17.9 |
|
Date first |
1988 |
|
Date last |
2016 |
|
Obs |
4 |
|
Pa first |
5 |
|
Pa last |
12.8 |
|
P.A. Now (θ) |
12.8° |
|
Sep first |
1.9 |
|
Sep last |
2.586 |
|
Sep. Now (ρ) |
2.586" |
|
Mag pri |
11.81 |
|
Mag sec |
13.10 |
|
delta mag (ΔM) |
1.29 |
|
Spectral class |
|
|
Pri motion ra |
-012 |
|
Sec motion ra |
|
|
Pri motion dec |
-015 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Ophiuchus |
|
Tycho2 |
1016-01244-1 |
|
Gaia DR2 |
4496444216155379584 |
|