20120+2100 HJ  907AB

 
 
20h 12m 02.35s +20 59' 06.1" P.A. 137 sep 5.7 mag 9.77,10.33 Sp K2
 
 
Coord 2000
20120+2100
Discov num
HJ  907
Comp
AB
Coord arcsec 2000
20 12 02.35 +20 59 06.1
Date first
1827
Date last
2015
Obs
18
Pa first
130
Pa last
137
P.A. Now (θ)
137°
Sep first
5.0
Sep last
5.7
Sep. Now (ρ)
5.7"
Mag pri
9.77
Mag sec
10.33
delta mag (ΔM)
0.56
Spectral class
K2 (yellow-orange)
Pri motion ra
+066
Sec motion ra
-016
Pri motion dec
+072
Sec motion dec
+108
Notes
rPM=0.82
This double is not physical.
 
 
20120+2100 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20120+2100 HJ 907 AB 1827 2015 18 137 5.7 9.77 10.33 0.56 <===
Show 20120+2100 HJ 907 AC 1903 2015 9 229 20.1 9.77 14.30 4.53
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
137.2
Precise sep
5.658
Constellation
Sagitta
Tycho2
1630-00880-1
Gaia DR2
83861873920
HD
351541
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20120+2100 HJ 907 AB 2000 11 136 5.7 9.77 10.33 K2 D 201202.35+205906.1
20120+2100 HJ 907 AB 2008 12 137 5.7 9.77 10.33 K2 D 201202.35+205906.1
20120+2100 HJ 907 AB 2013 14 137 5.7 9.77 10.33 K2 201202.35+205906.1
20120+2100 HJ 907 AB 2015 15 137 5.7 9.77 10.33 K2 201202.35+205906.1

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