20347+4957 ES 2696

 
 
20h 34m 40.94s +49 57' 11.3" P.A. 147 sep 12.2 mag 9.86,10.72 Sp B8
 
 
Coord 2000
20347+4957
Discov num
ES 2696
Comp
Coord arcsec 2000
20 34 40.94 +49 57 11.3
Date first
1911
Date last
2015
Obs
11
Pa first
148
Pa last
147
P.A. Now (θ)
147°
Sep first
10.8
Sep last
12.2
Sep. Now (ρ)
12.2"
Mag pri
9.86
Mag sec
10.72
delta mag (ΔM)
0.86
Spectral class
B8 (blue-white)
Pri motion ra
-004
Sec motion ra
+004
Pri motion dec
-006
Sec motion dec
-016
Notes
rPM=0.776
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
147.1
Precise sep
12.171
Constellation
Cygnus
SAO
49829
Tycho2
3581-02032-1
Gaia DR2
59133173632
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20347+4957 ES 2696 2003 4 148 12.1 9.80 10.40 B8 D 203440.94+495711.3
20347+4957 ES 2696 2010 6 147 11.8 9.86 10.72 B8 203440.94+495711.3
20347+4957 ES 2696 2015 7 147 12.2 9.86 10.72 B8 203440.94+495711.3

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