20449+1219 STF2723AB

 
 
20H 44M 54.58S +12 18' 45.6" P.A. 140 SEP 1 MAG 7.01,8.30 SP A3IV
 
 
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
2016
Obs
179
Pa first
86
Pa last
140
P.A. Now (θ)
140°
Sep first
1.5
Sep last
1.0
Sep. Now (ρ)
1"
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 20449+1219 B 2910 Aa,Ab 1937 2005 4 52 0.1 7.01
Show 20449+1219 STF2723 AB 1831 2016 179 140 1.0 7.01 8.30 1.29 <===
Show 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
 
 
Constellation
Delphinus
Tycho2
1097-02486-1
HD
197684
last precise pa
140.3
last precise sep
1.013