18281-2048 RSS 32 (HD 169991)
18h 28m 08.47s -20° 48' 06.8" P.A. 223.00 sep 45.7 mag 8.94,9.85 Sp B9II dist. 2777.78 pc (9061.12 l.y.)
Coord 2000 |
18281-2048 |
|
Discov num |
RSS 32 |
|
Comp |
|
|
Coord arcsec 2000 |
18 28 08.47 -20 48 06.8 |
|
Date first |
1894 |
|
Date last |
2017 |
|
Obs |
13 |
|
Pa first |
224 |
|
Pa last |
223.1 |
|
P.A. Now (θ) |
223.1° |
|
Sep first |
45.4 |
|
Sep last |
45.654 |
|
Sep. Now (ρ) |
45.654" |
|
Mag pri |
8.94 |
|
Mag sec |
9.85 |
|
delta mag (ΔM) |
0.91 |
|
Spectral class |
B9II (blue-white) |
|
Pri motion ra |
-003 |
|
Sec motion ra |
-001 |
|
Pri motion dec |
-007 |
|
Sec motion dec |
-003 |
|
Notes |
N
(See Notes) |
|
rPM=0.587
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 169991 |
|
Constellation |
Sagittarius |
|
SAO |
186850 |
|
HIP |
90508 |
|
Tycho2 |
6278-01671-1 |
|
Gaia DR2 |
4090393850533483648 |
|
HD |
169991 |
|
BD |
BD-20 5146 |
|
Distance |
2777.78 |
|
Distance ly |
9061.12 |
|