20188+3102 HDS2902

 
 
20h 18m 49.22s +31 02' 26.9" P.A. 292 sep 2 mag 11.38,13.77 Sp B:+K: dist. 431.03 pc (1406.02 l.y.)
 
 
Coord 2000
20188+3102
Discov num
HDS2902
Comp
Coord arcsec 2000
20 18 49.22 +31 02 26.9
Date first
1991
Date last
2005
Obs
3
Pa first
294
Pa last
292
P.A. Now (θ)
292°
Sep first
1.7
Sep last
2.0
Sep. Now (ρ)
2"
Mag pri
11.38
Mag sec
13.77
delta mag (ΔM)
2.39
Spectral class
B:+K: (blue-white/yellow-orange)
Pri motion ra
+002
Sec motion ra
-002
Pri motion dec
-008
Sec motion dec
-006
Notes
rPM=0.542
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
291.6
Precise sep
1.98
Constellation
Cygnus
HIP
100141
Tycho2
2672-00768-1
Gaia DR2
38305564672
HD
334032
Distance
431.03
Distance ly
1406.02
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20188+3102 HDS2902 1991 2 295 1.8 11.38 13.77 B... 201849.22+310226.9
20188+3102 HDS2902 2005 3 292 2.0 11.38 13.77 B:+K: 201849.22+310226.9

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