18245-2947 BIL 7 Aa,Ab (HD 169142)
18h 24m 29.77s -29° 46' 49.3" sep 0.1 mag 5.60,12.10 Sp A7V
Coord 2000 |
18245-2947 |
|
Discov num |
BIL 7 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
18 24 29.77 -29 46 49.3 |
|
Date first |
2013 |
|
Date last |
2013 |
|
Obs |
1 |
|
Pa first |
0 |
|
Pa last |
0 |
|
P.A. Now (θ) |
0 |
|
Sep first |
0.1 |
|
Sep last |
0.11 |
|
Sep. Now (ρ) |
0.11" |
|
Mag pri |
5.60 |
|
Mag sec |
12.10 |
|
delta mag (ΔM) |
6.5 |
|
Spectral class |
A7V (white) |
|
Pri motion ra |
-002 |
|
Sec motion ra |
|
|
Pri motion dec |
-040 |
|
Sec motion dec |
|
|
Notes |
K
(K-band or other infrared magnitudes) |
|
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
18245-2947 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 169142 |
186777 |
18 24 30 -29 46 49 |
BIL 7 Aa,Ab |
2013 |
1 |
0 |
0.1 |
5.60 |
12.10 |
6.50 |
|
<=== |
Show |
|
186777 |
18 24 30 -29 46 49 |
B 2446 AB |
2015 |
4 |
223 |
9.3 |
8.19 |
14.10 |
5.91 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 169142 |
|
Constellation |
Sagittarius |
|
SAO |
186777 |
|
Tycho2 |
6856-00876-1 |
|
Gaia DR2 |
4048015133392824064 |
|
HD |
169142 |
|