20307+2657 OPI  25AD

 
 
20h 30m 46.95s +26 57' 34.6" P.A. 357.00 sep 103.7 mag 10.03,11.80
 
 
Coord 2000
20307+2657
Discov num
OPI  25
Comp
AD
Coord arcsec 2000
20 30 46.95 +26 57 34.6
Date first
1924
Date last
2015
Obs
9
Pa first
356
Pa last
357
P.A. Now (θ)
357°
Sep first
99.9
Sep last
103.7
Sep. Now (ρ)
103.7"
Mag pri
10.03
Mag sec
11.80
delta mag (ΔM)
1.77
Spectral class
Pri motion ra
-036
Sec motion ra
-001
Pri motion dec
-043
Sec motion dec
-006
Notes
rPM=0.908
This double is not physical.
 
 
20307+2657 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20307+2657 OPI 25 AB 1924 2015 9 29 14.0 10.03 13.50 3.47
Show 20307+2657 OPI 25 AC 1924 2015 9 324 27.0 10.03 12.50 2.47
Show 20307+2657 OPI 25 AD 1924 2015 9 357 103.7 10.03 11.80 1.77 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
357.1
Precise sep
103.727
Constellation
Vulpecula
Tycho2
2165-00677-1
Gaia DR2
12032193920
HD
340458
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20307+2657 OPI 25 AD 1999 2 357 103.1 10.03 11.80 D 203046.95+265734.6
20307+2657 OPI 25 AD 2002 3 357 103.2 10.03 11.80 D 203046.95+265734.6
20307+2657 OPI 25 AD 2012 4 358 104.5 10.03 11.80 D 203046.95+265734.6
20307+2657 OPI 25 AD 2015 5 357 103.7 10.03 11.80 203046.95+265734.6

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