20019-1733 HJ 2918 AB (HD 189679)
20h 01m 51.78s -17° 33' 00.3" P.A. 135.00 sep 15.8 mag 8.00,8.34 Sp A3V dist. 229.89 pc (749.9 l.y.)
Coord 2000 |
20019-1733 |
|
Discov num |
HJ 2918 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 01 51.78 -17 33 00.3 |
|
Date first |
1830 |
|
Date last |
2007 |
|
Obs |
8 |
|
Pa first |
139 |
|
Pa last |
134.8 |
|
P.A. Now (θ) |
134.8° |
|
Sep first |
15.0 |
|
Sep last |
15.8 |
|
Sep. Now (ρ) |
15.8" |
|
Mag pri |
8.00 |
|
Mag sec |
8.34 |
|
delta mag (ΔM) |
0.34 |
|
Spectral class |
A3V (white) |
|
Pri motion ra |
+014 |
|
Sec motion ra |
|
|
Pri motion dec |
-007 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
20019-1733 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
163192 |
20 01 52 -17 33 00 |
OCC 340 Aa,Ab |
1974 |
0 |
-1 |
0.3 |
9.10 |
9.10 |
0.00 |
|
|
Show |
HD 189679 |
163192 |
20 01 52 -17 33 00 |
HJ 2918 AB |
2007 |
8 |
135 |
15.8 |
8.00 |
8.34 |
0.34 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 189679 |
|
Constellation |
Sagittarius |
|
SAO |
163192 |
|
HIP |
98623 |
|
Tycho2 |
6318-01074-1 |
|
Gaia DR2 |
6867940851369145856 |
|
HD |
189679 |
|
BD |
BD-17 5835 |
|
Distance |
229.89 |
|
Distance ly |
749.9 |
|