20253+4355 A   291AB

 
 
20h 25m 16.06s +43 55' 17.0" P.A. 148 sep 0.8 mag 9.85,10.42 Sp F0
 
 
Coord 2000
20253+4355
Discov num
A   291
Comp
AB
Coord arcsec 2000
20 25 16.06 +43 55 17.0
Date first
1901
Date last
2016
Obs
11
Pa first
145
Pa last
148
P.A. Now (θ)
148°
Sep first
0.7
Sep last
0.8
Sep. Now (ρ)
0.8"
Mag pri
9.85
Mag sec
10.42
delta mag (ΔM)
0.57
Spectral class
F0 (yellow-white)
Pri motion ra
+005
Sec motion ra
+005
Pri motion dec
+008
Sec motion dec
+008
Notes
Nature of this double is uncertain.
 
 
20253+4355 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20253+4355 A 291 AB 1901 2016 11 148 0.8 9.85 10.42 0.57 <===
Show 20253+4355 A 291 AC 1892 2015 10 284 17.9 9.85 11.19 1.34
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
148.2
Precise sep
0.78
Constellation
Cygnus
SAO
49599
Tycho2
3164-00785-1
Gaia DR2
61923805824
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20253+4355 A 291 AB 1991 7 142 0.6 9.85 10.42 F0 202516.06+435517.0
20253+4355 A 291 AB 2008 8 147 0.8 9.85 10.42 F0 202516.06+435517.0
20253+4355 A 291 AB 2010 9 147 0.8 9.85 10.42 F0 202516.06+435517.0
20253+4355 A 291 AB 2016 10 148 0.8 9.85 10.42 F0 202516.06+435517.0

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