20253+4355 A   291AC

 
 
20h 25m 16.06s +43 55' 17.0" P.A. 284 sep 17.9 mag 9.85,11.19 Sp F0
 
 
Coord 2000
20253+4355
Discov num
A   291
Comp
AC
Coord arcsec 2000
20 25 16.06 +43 55 17.0
Date first
1892
Date last
2015
Obs
10
Pa first
285
Pa last
284
P.A. Now (θ)
284°
Sep first
17.9
Sep last
17.9
Sep. Now (ρ)
17.9"
Mag pri
9.85
Mag sec
11.19
delta mag (ΔM)
1.34
Spectral class
F0 (yellow-white)
Pri motion ra
+005
Sec motion ra
+006
Pri motion dec
+008
Sec motion dec
+005
Notes
rPM=0.335
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
283.7
Precise sep
17.941
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 AC 1998 6 284 18.1 9.48 11.19 D 202516.06+435517.0
20253+4355 A 291 AC 2003 8 285 17.7 9.85 11.19 D 202516.06+435517.0
20253+4355 A 291 AC 2013 9 285 18.1 9.85 11.19 F0 202516.06+435517.0
20253+4355 A 291 AC 2015 10 284 17.9 9.85 11.19 F0 202516.06+435517.0

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