18011-1804 A 2256 AB,C
18h 01m 03.14s -18° 04' 24.3" P.A. 4.00 sep 6.8 mag 8.40,13.90 Sp B9V
| Coord 2000 |
18011-1804 |
|
Discov num |
A 2256 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
18 01 03.14 -18 04 24.3 |
|
| Date first |
1917 |
|
Date last |
1917 |
|
Obs |
1 |
|
| Pa first |
4 |
|
Pa last |
3.8 |
|
P.A. Now (θ) |
3.8° |
|
| Sep first |
6.8 |
|
Sep last |
6.83 |
|
Sep. Now (ρ) |
6.83" |
|
| Mag pri |
8.40 |
|
Mag sec |
13.90 |
|
delta mag (ΔM) |
5.5 |
|
Spectral class |
B9V (blue-white) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
|
|
| Pri motion dec |
-002 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
18011-1804 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
160994 |
18 01 03 -18 04 24 |
A 2256 AB |
2015 |
7 |
161 |
0.2 |
8.80 |
9.80 |
1.00 |
|
|
| Show |
|
160994 |
18 01 03 -18 04 24 |
A 2256 AB,C |
1917 |
1 |
4 |
6.8 |
8.40 |
13.90 |
5.50 |
|
<=== |
| Show |
|
160994 |
18 01 03 -18 04 24 |
A 2256 AB,D |
1998 |
4 |
128 |
7.2 |
8.40 |
13.00 |
4.60 |
|
|
| Show |
HD 164261 |
160994 |
18 01 03 -18 04 24 |
A 2256 AB,E |
2016 |
4 |
124 |
21.9 |
8.40 |
12.40 |
4.00 |
|
|
Quintuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Sagittarius |
|
SAO |
160994 |
|
Tycho2 |
6255-01015-1 |
|
Gaia DR2 |
4143553966388921728 |
|
| HD |
164261 |
|
