20108+2029 HDS 2875 (HD 191721)
20h 10m 45.15s +20° 29' 12.7" P.A. 231.00 sep 0.3 mag 7.61,9.46 Sp B8 dist. 452.49 pc (1476.02 l.y.)
| Coord 2000 |
20108+2029 |
|
Discov num |
HDS2875 |
|
Comp |
|
|
Coord arcsec 2000 |
20 10 45.15 +20 29 12.7 |
|
| Date first |
1991 |
|
Date last |
2011 |
|
Obs |
4 |
|
| Pa first |
231 |
|
Pa last |
230.9 |
|
P.A. Now (θ) |
230.9° |
|
| Sep first |
0.3 |
|
Sep last |
0.306 |
|
Sep. Now (ρ) |
0.306" |
|
| Mag pri |
7.61 |
|
Mag sec |
9.46 |
|
delta mag (ΔM) |
1.85 |
|
Spectral class |
B8 (blue-white) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
|
|
| Pri motion dec |
-008 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 191721 |
|
Constellation |
Sagitta |
|
SAO |
88299 |
|
HIP |
99421 |
|
| Tycho2 |
1626-00634-1 |
|
Gaia DR2 |
1828813777784480128 |
|
HD |
191721 |
|
BD |
BD+20 4461 |
|
| Distance |
452.49 |
|
Distance ly |
1476.02 |
|
