20391+1329 UC 4242AB

 
 
20h 39m 07.13s +13 29' 01.8" P.A. 105 sep 45.1 mag 9.90,15.40
 
 
Coord 2000
20391+1329
Discov num
UC 4242
Comp
AB
Coord arcsec 2000
20 39 07.13 +13 29 01.8
Date first
1998
Date last
2001
Obs
2
Pa first
105
Pa last
105
P.A. Now (θ)
105°
Sep first
45.1
Sep last
45.1
Sep. Now (ρ)
45.1"
Mag pri
9.90
Mag sec
15.40
delta mag (ΔM)
5.5
Spectral class
Pri motion ra
+074
Sec motion ra
+071
Pri motion dec
+056
Sec motion dec
+055
Notes
V (Proper motion indicates physical)
rPM=0.034 (< 0.3, Physical double)
This double is physical.
 
 
20391+1329 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20391+1329 TDT2453 Aa,Ab 1991 1991 1 117 0.5 10.49 10.94 0.45
Show 20391+1329 UC 4242 AB 1998 2001 2 105 45.1 9.90 15.40 5.50 <===
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
105
Precise sep
45.07
Constellation
Delphinus
Tycho2
1100-01675-1
last precise pa
105
last precise sep
45.07
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20391+1329 UC 4242 AB 2000 2 105 45.3 9.90 15.40 V 203907.13+132901.8
20391+1329 UC 4242 AB 2001 2 105 45.1 9.90 15.40 V 203907.13+132901.8

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