20330+5712 A   739

 
 
20h 32m 57.89s +57 11' 30.2" P.A. 195 sep 4.6 mag 9.69,12.40 Sp F2
 
 
Coord 2000
20330+5712
Discov num
A   739
Comp
Coord arcsec 2000
20 32 57.89 +57 11 30.2
Date first
1903
Date last
2015
Obs
10
Pa first
188
Pa last
195
P.A. Now (θ)
195°
Sep first
4.2
Sep last
4.6
Sep. Now (ρ)
4.6"
Mag pri
9.69
Mag sec
12.40
delta mag (ΔM)
2.71
Spectral class
F2 (yellow-white)
Pri motion ra
-006
Sec motion ra
-010
Pri motion dec
-001
Sec motion dec
-013
Notes
rPM=0.771
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
195.4
Precise sep
4.592
Constellation
Cygnus
SAO
32680
Tycho2
3958-01257-1
Gaia DR2
67688492544
HD
239444
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20330+5712 A 739 1999 8 196 4.3 9.69 12.40 F2 D 203257.89+571130.2
20330+5712 A 739 2003 9 196 4.6 9.69 12.40 F2 D 203257.89+571130.2
20330+5712 A 739 2015 10 195 4.6 9.69 12.40 F2 203257.89+571130.2

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