20456+4621 HDS 2955
20h 45m 35.28s +46° 21' 02.1" P.A. 289.00 sep 0.4 mag 9.25,12.42 Sp O9V dist. 1298.7 pc (4236.36 l.y.)
Coord 2000 |
20456+4621 |
|
Discov num |
HDS2955 |
|
Comp |
|
|
Coord arcsec 2000 |
20 45 35.28 +46 21 02.1 |
|
Date first |
1991 |
|
Date last |
2009 |
|
Obs |
2 |
|
Pa first |
290 |
|
Pa last |
288.9 |
|
P.A. Now (θ) |
288.9° |
|
Sep first |
0.4 |
|
Sep last |
0.387 |
|
Sep. Now (ρ) |
0.387" |
|
Mag pri |
9.25 |
|
Mag sec |
12.42 |
|
delta mag (ΔM) |
3.17 |
|
Spectral class |
O9V (blue) |
|
Pri motion ra |
-002 |
|
Sec motion ra |
|
|
Pri motion dec |
-005 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
HIP |
102449 |
|
Tycho2 |
3574-00466-1 |
|
Gaia DR2 |
2166553616342929664 |
|
BD |
BD+45 3260 |
|
Distance |
1298.7 |
|
Distance ly |
4236.36 |
|