20250+3034 HDS2921

 
 
20h 25m 02.55s +30 34' 05.4" P.A. 356 sep 0.8 mag 8.10,11.04 Sp G2Ib-II dist. 400 pc (1304.8 l.y.)
 
 
Coord 2000
20250+3034
Discov num
HDS2921
Comp
Coord arcsec 2000
20 25 02.55 +30 34 05.4
Date first
1991
Date last
2009
Obs
3
Pa first
356
Pa last
356
P.A. Now (θ)
356°
Sep first
0.8
Sep last
0.8
Sep. Now (ρ)
0.8"
Mag pri
8.10
Mag sec
11.04
delta mag (ΔM)
2.94
Spectral class
G2Ib-II (yellow)
Pri motion ra
+007
Sec motion ra
+004
Pri motion dec
-007
Sec motion dec
-006
Notes
rPM=0.319
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
356.1
Precise sep
0.81
Constellation
Cygnus
SAO
69987
HIP
100708
Tycho2
2685-01750-1
Gaia DR2
11539519488
HD
194525
BD
BD+30 4023
Distance
400
Distance ly
1304.8
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20250+3034 HDS2921 1991 2 356 0.8 8.10 11.04 G2Ib-II D 202502.55+303405.4
20250+3034 HDS2921 2009 3 356 0.8 8.10 11.04 G2Ib-II D 202502.55+303405.4

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