18403+3425 HDS 2645 AB (HD 172715)
18h 40m 16.21s +34° 25' 01.6" P.A. 19.00 sep 1.9 mag 7.69,11.72 Sp K0 dist. 344.83 pc (1124.84 l.y.)
| Coord 2000 |
18403+3425 |
|
Discov num |
HDS2645 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 40 16.21 +34 25 01.6 |
|
| Date first |
1991 |
|
Date last |
2016 |
|
Obs |
11 |
|
| Pa first |
20 |
|
Pa last |
18.8 |
|
P.A. Now (θ) |
18.8° |
|
| Sep first |
1.8 |
|
Sep last |
1.888 |
|
Sep. Now (ρ) |
1.888" |
|
| Mag pri |
7.69 |
|
Mag sec |
11.72 |
|
delta mag (ΔM) |
4.03 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+003 |
|
Sec motion ra |
+002 |
|
| Pri motion dec |
-003 |
|
Sec motion dec |
-002 |
|
| Notes |
|
|
rPM=0.333
Nature of this double is uncertain.
18403+3425 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
67232 |
18 40 16 +34 25 02 |
GII 270 Aa,Ab |
2014 |
1 |
109 |
0.2 |
8.40 |
8.40 |
0.00 |
|
|
| Show |
HD 172715 |
67232 |
18 40 16 +34 25 02 |
HDS 2645 AB |
2016 |
11 |
19 |
1.9 |
7.69 |
11.72 |
4.03 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 172715 |
|
Constellation |
Lyra |
|
SAO |
67232 |
|
HIP |
91554 |
|
| Tycho2 |
2645-01906-1 |
|
HD |
172715 |
|
BD |
BD+34 3274 |
|
Distance |
344.83 |
|
| Distance ly |
1124.84 |
|
