18020-2731 B 2850 AC
18h 02m 02.85s -27° 30' 53.4" P.A. 50.00 sep 5.8 mag 8.49,14.10 Sp B2V
Coord 2000 |
18020-2731 |
|
Discov num |
B 2850 |
|
Comp |
AC |
|
Coord arcsec 2000 |
18 02 02.85 -27 30 53.4 |
|
Date first |
1927 |
|
Date last |
1999 |
|
Obs |
3 |
|
Pa first |
55 |
|
Pa last |
50.1 |
|
P.A. Now (θ) |
50.1° |
|
Sep first |
5.8 |
|
Sep last |
5.78 |
|
Sep. Now (ρ) |
5.78" |
|
Mag pri |
8.49 |
|
Mag sec |
14.10 |
|
delta mag (ΔM) |
5.61 |
|
Spectral class |
B2V (blue-white) |
|
Pri motion ra |
-013 |
|
Sec motion ra |
|
|
Pri motion dec |
+035 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
18020-2731 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 164404 |
|
18 02 03 -27 30 53 |
STN 40 AB |
1999 |
19 |
161 |
2.4 |
8.49 |
9.31 |
0.82 |
|
|
Show |
|
|
18 02 03 -27 30 53 |
B 2850 AC |
1999 |
3 |
50 |
5.8 |
8.49 |
14.10 |
5.61 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Sagittarius |
|
Tycho2 |
6850-02107-1 |
|
Gaia DR2 |
4063117200416630272 |
|
HD |
164404 |
|
DM |
CD-2712272 |
|