20001+1731 H 4 100BC

 
 
20H 00M 08.80S +17 30' 03.1" P.A. 306 SEP 97.1 MAG 10.12,5.57 SP K0
 
 
Coord 2000
20001+1731
Discov num
H 4 100
Comp
BC
Coord arcsec 2000
20 00 08.80 +17 30 03.1
Date first
1900
Date last
2013
Obs
5
Pa first
306
Pa last
306
P.A. Now (θ)
306°
Sep first
97.2
Sep last
97.1
Sep. Now (ρ)
97.1"
Mag pri
10.12
Mag sec
5.57
delta mag (ΔM)
4.55
Spectral class
K0 (yellow-orange)
Pri motion ra
+003
Sec motion ra
+002
Pri motion dec
-008
Sec motion dec
-012
Notes
N (See Notes)
rPM=0.339
Nature of this double is uncertain.
 
 
20001+1731 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 13 Sge 105522 20001+1731 H 4 100 AB 1782 2013 19 265 23.9 9.96 10.12 0.16
Show 105522 20001+1731 H 4 100 AC 1896 2013 17 297 112.6 9.96 5.57 4.39
Show 20001+1731 H 4 100 BC 1900 2013 5 306 97.1 10.12 5.57 4.55 <===
Show 105522 20001+1731 BU 1477 CD 1878 2013 8 208 27.0 5.57 13.40 7.83
Show 105522 20001+1731 BU 1477 CE 1924 2001 4 115 43.0 5.57 12.99 7.42
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Sagitta
last precise pa
306
last precise sep
97.14