20312+2227 J   564

 
 
20h 31m 12.57s +22 26' 31.0" P.A. 310 sep 2.1 mag 9.70,12.40 Sp A5
 
 
Coord 2000
20312+2227
Discov num
J   564
Comp
Coord arcsec 2000
20 31 12.57 +22 26 31.0
Date first
1911
Date last
2015
Obs
5
Pa first
306
Pa last
310
P.A. Now (θ)
310°
Sep first
1.6
Sep last
2.1
Sep. Now (ρ)
2.1"
Mag pri
9.70
Mag sec
12.40
delta mag (ΔM)
2.7
Spectral class
A5 (white)
Pri motion ra
+020
Sec motion ra
Pri motion dec
-000
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
309.7
Precise sep
2.127
Constellation
Vulpecula
SAO
88784
Tycho2
1644-00091-1
Gaia DR2
34898896000
HD
346778
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20312+2227 J 564 2005 4 309 2.5 9.70 12.40 A5 203112.57+222631.0
20312+2227 J 564 2015 5 310 2.1 9.70 12.40 A5 203112.57+222631.0

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