18317-1658 HU 243 (HD 170741)
18h 31m 44.65s -16° 57' 32.1" P.A. 346.00 sep 1.4 mag 10.34,10.74 Sp B9III
| Coord 2000 |
18317-1658 |
|
Discov num |
HU 243 |
|
Comp |
|
|
Coord arcsec 2000 |
18 31 44.65 -16 57 32.1 |
|
| Date first |
1900 |
|
Date last |
1991 |
|
Obs |
7 |
|
| Pa first |
355 |
|
Pa last |
346.4 |
|
P.A. Now (θ) |
346.4° |
|
| Sep first |
1.3 |
|
Sep last |
1.429 |
|
Sep. Now (ρ) |
1.429" |
|
| Mag pri |
10.34 |
|
Mag sec |
10.74 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
B9III (blue-white) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
-002 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
-007 |
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 170741 |
|
Constellation |
Sagittarius |
|
Tycho2 |
6270-01039-2 |
|
Gaia DR2 |
4096783932871292288 |
|
| HD |
170741 |
|
