20277+4507 BKO 154EK

 
 
20h 27m 34.68s +45 06' 54.6" P.A. 109 sep 4.7 mag 11.20,13.00
 
 
Coord 2000
20277+4507
Discov num
BKO 154
Comp
EK
Coord arcsec 2000
20 27 34.68 +45 06 54.6
Date first
1998
Date last
2015
Obs
4
Pa first
107
Pa last
109
P.A. Now (θ)
109°
Sep first
4.8
Sep last
4.7
Sep. Now (ρ)
4.7"
Mag pri
11.20
Mag sec
13.00
delta mag (ΔM)
1.8
Spectral class
Pri motion ra
-004
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20277+4507 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20277+4507 ROE 43 AB 1910 2015 6 316 17.5 9.38 14.80 5.42
Show 20277+4507 ROE 43 AC 1910 2015 5 311 52.8 9.38 13.19 3.81
Show 20277+4507 ROE 43 AD 1910 2015 6 271 42.5 9.38 12.47 3.09
Show 20277+4507 ROE 43 AE 1892 2015 11 282 82.9 9.38 11.19 1.81
Show 20277+4507 ROE 43 AF 1892 2015 10 336 87.2 9.38 12.40 3.02
Show 20277+4507 ROE 43 AG 1892 2015 10 282 102.5 9.38 12.85 3.47
Show 20277+4507 BKO 154 AH 1998 2015 4 224 18.5 9.38 12.70 3.32
Show 20277+4507 BKO 154 AI 1998 2015 4 63 24.1 9.38 14.00 4.62
Show 20277+4507 BKO 154 CJ 1998 2015 4 331 17.9 13.40 13.90 0.50
Show 20277+4507 BKO 154 EK 1998 2015 4 109 4.7 11.20 13.00 1.80 <===
11-fold system
11 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
108.6
Precise sep
4.724
Constellation
Cygnus
Tycho2
3573-00591-1
last precise pa
108.6
last precise sep
4.724
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20277+4507 BKO 154 EK 2003 2 109 4.7 11.20 13.00 D 202734.68+450654.6
20277+4507 BKO 154 EK 2015 4 109 4.7 11.20 13.00 202734.68+450654.6

If you need more information about this double, apply for a data request form to the WDS.