20024+2105 HDS2855 (BF Sge)

 
 
20h 02m 23.08s +21 05' 24.9" P.A. 246.00 sep 0.2 mag 9.86,10.19 Sp C5II dist. 757.58 pc (2471.23 l.y.)
 
 
Coord 2000
20024+2105
Discov num
HDS2855
Comp
Coord arcsec 2000
20 02 23.08 +21 05 24.9
Date first
1991
Date last
1991
Obs
1
Pa first
246
Pa last
246
P.A. Now (θ)
246°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
9.86
Mag sec
10.19
delta mag (ΔM)
0.33
Spectral class
C5II (red carbon star)
Pri motion ra
-001
Sec motion ra
Pri motion dec
-006
Sec motion dec
Notes
X (Dubious double)
Visually invisible, K-band or other infrared star Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
246
Precise sep
0.177
Var name
BF Sge
Constellation
Sagitta
HIP
98662
Tycho2
1629-00945-1
Gaia DR2
19027667328
HD
190048
BD
BD+20 4390
Distance
757.58
Distance ly
2471.23
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20024+2105 HDS2855 1991 1 246 0.2 9.86 10.19 C5II X 200223.08+210524.9

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