20257+4004 POP 199AC

 
 
20h 25m 44.56s +40 03' 59.0" P.A. 245 sep 59.6 mag 8.73,11.94 Sp A0
 
 
Coord 2000
20257+4004
Discov num
POP 199
Comp
AC
Coord arcsec 2000
20 25 44.56 +40 03 59.0
Date first
1892
Date last
2015
Obs
8
Pa first
245
Pa last
245
P.A. Now (θ)
245°
Sep first
58.8
Sep last
59.6
Sep. Now (ρ)
59.6"
Mag pri
8.73
Mag sec
11.94
delta mag (ΔM)
3.21
Spectral class
A0 (white)
Pri motion ra
+000
Sec motion ra
-009
Pri motion dec
-011
Sec motion dec
-008
Notes
N (See Notes)
rPM=0.788
Nature of this double is uncertain.
 
 
20257+4004 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20257+4004 TOR 25 AB 1977 2015 9 191 4.7 8.73 10.50 1.77
Show 20257+4004 POP 199 AC 1892 2015 8 245 59.6 8.73 11.94 3.21 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
244.8
Precise sep
59.551
Constellation
Cygnus
SAO
70001
Tycho2
3156-00461-1
Gaia DR2
87612516608
HD
194720
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20257+4004 POP 199 AC 1998 5 245 59.5 8.73 10.70 A0 D 202544.56+400359.0
20257+4004 POP 199 AC 2009 6 245 59.7 8.73 10.70 A0 N D 202544.56+400359.0
20257+4004 POP 199 AC 2015 8 245 59.6 8.73 11.94 A0 N 202544.56+400359.0

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