18179-1750 TDT 781 Aa,Ab
18h 17m 54.51s -17° 49' 45.2" P.A. 130.00 sep 0.4 mag 9.48,10.12 Sp M1
| Coord 2000 |
18179-1750 |
|
Discov num |
TDT 781 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
18 17 54.51 -17 49 45.2 |
|
| Date first |
1991 |
|
Date last |
1991 |
|
Obs |
1 |
|
| Pa first |
130 |
|
Pa last |
130.4 |
|
P.A. Now (θ) |
130.4° |
|
| Sep first |
0.4 |
|
Sep last |
0.43 |
|
Sep. Now (ρ) |
0.43" |
|
| Mag pri |
9.48 |
|
Mag sec |
10.12 |
|
delta mag (ΔM) |
0.64 |
|
Spectral class |
M1 (red) |
|
| Pri motion ra |
-000 |
|
Sec motion ra |
-001 |
|
| Pri motion dec |
+001 |
|
Sec motion dec |
+001 |
|
| Notes |
|
|
rPM=0.707
Nature of this double is uncertain.
18179-1750 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
161282 |
18 17 55 -17 49 45 |
TDT 781 Aa,Ab |
1991 |
1 |
130 |
0.4 |
9.48 |
10.12 |
0.64 |
|
<=== |
| Show |
HD 167861 |
161282 |
18 17 55 -17 49 45 |
ARA 275 AB |
1999 |
2 |
349 |
10.4 |
9.08 |
12.50 |
3.42 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Sagittarius |
|
SAO |
161282 |
|
Tycho2 |
6269-00352-1 |
|
Gaia DR2 |
4097162925076717568 |
|
| HD |
167861 |
|
