20023-1157 HU 79 AB (HD 189815)
20h 02m 18.63s -11° 57' 24.7" P.A. 235.00 sep 0.5 mag 10.31,10.26 Sp A8V
Coord 2000 |
20023-1157 |
|
Discov num |
HU 79 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 02 18.63 -11 57 24.7 |
|
Date first |
1899 |
|
Date last |
1991 |
|
Obs |
11 |
|
Pa first |
244 |
|
Pa last |
234.9 |
|
P.A. Now (θ) |
234.9° |
|
Sep first |
0.6 |
|
Sep last |
0.54 |
|
Sep. Now (ρ) |
0.54" |
|
Mag pri |
10.31 |
|
Mag sec |
10.26 |
|
delta mag (ΔM) |
0.05 |
|
Spectral class |
A8V (white) |
|
Pri motion ra |
-001 |
|
Sec motion ra |
-001 |
|
Pri motion dec |
-011 |
|
Sec motion dec |
-011 |
|
Notes |
|
|
Nature of this double is uncertain.
20023-1157 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 189815 |
163197 |
20 02 19 -11 57 25 |
HU 79 AB |
1991 |
11 |
235 |
0.5 |
10.31 |
10.26 |
0.05 |
|
<=== |
Show |
|
163197 |
20 02 19 -11 57 25 |
B 2882 AB,C |
2005 |
4 |
289 |
3.8 |
9.53 |
13.90 |
4.37 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 189815 |
|
Constellation |
Sagittarius |
|
SAO |
163197 |
|
Tycho2 |
5746-00883-1 |
|
Gaia DR2 |
4189113428946083840 |
|
HD |
189815 |
|
ADS |
13268 |
|