20209+1948 HJ 2954AB

 
 
20h 20m 50.62s +19 47' 52.1" P.A. 303 sep 3.1 mag 10.47,10.54 Sp A3
 
 
Coord 2000
20209+1948
Discov num
HJ 2954
Comp
AB
Coord arcsec 2000
20 20 50.62 +19 47 52.1
Date first
1831
Date last
2018
Obs
12
Pa first
300
Pa last
303
P.A. Now (θ)
303°
Sep first
1.5
Sep last
3.1
Sep. Now (ρ)
3.1"
Mag pri
10.47
Mag sec
10.54
delta mag (ΔM)
0.07
Spectral class
A3 (white)
Pri motion ra
+003
Sec motion ra
-062
Pri motion dec
-012
Sec motion dec
+034
Notes
rPM=1.126
This double is not physical.
 
 
20209+1948 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20209+1948 HJ 2954 AB 1831 2018 12 303 3.1 10.47 10.54 0.07 <===
Show 20209+1948 HJ 2954 BC 1925 2015 5 292 23.1 10.54 13.00 2.46
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
302.6
Precise sep
3.075
Constellation
Sagitta
Tycho2
1639-02174-2
Gaia DR2
68172444672
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20209+1948 HJ 2954 AB 2000 9 304 3.1 10.47 10.54 A3 D 202050.62+194752.1
20209+1948 HJ 2954 AB 2001 10 303 3.0 10.47 10.54 A3 D 202050.62+194752.1
20209+1948 HJ 2954 AB 2009 11 303 3.0 10.47 10.54 A3 D 202050.62+194752.1

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