20449+1219 STF2723AB

 
 
20h 44m 54.58s +12 18' 45.6" P.A. 146 sep 1.2 mag 7.01,8.30 Sp A3IV dist. 209.21 pc (682.44 l.y.)
 
 
Coord 2000
20449+1219
Discov num
STF2723
Comp
AB
Coord arcsec 2000
20 44 54.58 +12 18 45.6
Date first
1831
Date last
2011
Obs
178
Pa first
86
Pa last
146
P.A. Now (θ)
146°
Sep first
1.5
Sep last
1.2
Sep. Now (ρ)
1.2"
Mag pri
7.01
Mag sec
8.30
delta mag (ΔM)
1.29
Spectral class
A3IV (white)
Pri motion ra
+020
Sec motion ra
+020
Pri motion dec
+003
Sec motion dec
+003
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
20449+1219 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 106443 20449+1219 B 2910 Aa,Ab 1937 2005 4 52 0.1 7.01
Show 106443 20449+1219 STF2723 AB 1831 2011 178 146 1.2 7.01 8.30 1.29 <===
Show 106443 20449+1219 BU 1492 AC 1877 2013 5 30 36.1 7.01 13.00 5.99
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
145.6
Precise sep
1.17
Constellation
Delphinus
SAO
106443
HIP
102390
Tycho2
1097-02486-1
HD
197684
BD
BD+11 4368
Distance
209.21
Distance ly
682.44
last precise pa
140.3
last precise sep
1.013
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20449+1219 STF2723 AB 2008 178 135 1.0 7.01 8.30 A3IV D 204454.58+121845.6
20449+1219 STF2723 AB 2009 183 136 1.0 7.01 8.30 A3IV N D 204454.58+121845.6
20449+1219 STF2723 AB 2011 184 146 1.2 7.01 8.30 A3IV N D 204454.58+121845.6

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