18093+3836 HEI 557
18h 09m 20.63s +38° 36' 30.1" P.A. 281.00 sep 1.8 mag 11.40,11.80
| Coord 2000 |
18093+3836 |
|
Discov num |
HEI 557 |
|
Comp |
|
|
Coord arcsec 2000 |
18 09 20.63 +38 36 30.1 |
|
| Date first |
1970 |
|
Date last |
2016 |
|
Obs |
7 |
|
| Pa first |
281 |
|
Pa last |
280.8 |
|
P.A. Now (θ) |
280.8° |
|
| Sep first |
1.5 |
|
Sep last |
1.763 |
|
Sep. Now (ρ) |
1.763" |
|
| Mag pri |
11.40 |
|
Mag sec |
11.80 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
|
|
| Pri motion ra |
-010 |
|
Sec motion ra |
|
|
| Pri motion dec |
-006 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
Gaia DR2 |
4610191683344558208 |
|
