18084-1856 I 625 AB (HD 165744)
18h 08m 20.97s -18° 55' 50.9" P.A. 44.00 sep 1.8 mag 10.46,10.94 Sp B9III
| Coord 2000 |
18084-1856 |
|
Discov num |
I 625 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 08 20.97 -18 55 50.9 |
|
| Date first |
1910 |
|
Date last |
2015 |
|
Obs |
11 |
|
| Pa first |
43 |
|
Pa last |
43.6 |
|
P.A. Now (θ) |
43.6° |
|
| Sep first |
1.4 |
|
Sep last |
1.753 |
|
Sep. Now (ρ) |
1.753" |
|
| Mag pri |
10.46 |
|
Mag sec |
10.94 |
|
delta mag (ΔM) |
0.48 |
|
Spectral class |
B9III (blue-white) |
|
| Pri motion ra |
-001 |
|
Sec motion ra |
-001 |
|
| Pri motion dec |
-008 |
|
Sec motion dec |
-008 |
|
| Notes |
|
|
Nature of this double is uncertain.
18084-1856 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 165744 |
|
18 08 21 -18 55 51 |
I 625 AB |
2015 |
11 |
44 |
1.8 |
10.46 |
10.94 |
0.48 |
|
<=== |
| Show |
|
|
18 08 21 -18 55 51 |
AOT 69 AB,C |
1999 |
4 |
92 |
16.8 |
9.90 |
12.90 |
3.00 |
|
|
| Show |
|
|
18 08 21 -18 55 51 |
AOT 70 AB,D |
1999 |
3 |
299 |
19.6 |
9.90 |
13.90 |
4.00 |
|
|
| Show |
|
|
18 08 22 -18 55 52 |
AOT 70 CD |
2015 |
5 |
286 |
35.5 |
12.90 |
13.90 |
1.00 |
|
|
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 165744 |
|
Constellation |
Sagittarius |
|
Tycho2 |
6272-00130-1 |
|
Gaia DR2 |
4095178478403317888 |
|
| HD |
165744 |
|
