20019-1733 HJ 2918AB

 
 
20h 01m 51.78s -17 33' 00.3" P.A. 135.00 sep 15.8 mag 8.00,8.34 Sp A3V dist. 229.89 pc (749.9 l.y.)
 
 
Coord 2000
20019-1733
Discov num
HJ 2918
Comp
AB
Coord arcsec 2000
20 01 51.78 -17 33 00.3
Date first
1830
Date last
2007
Obs
8
Pa first
139
Pa last
135
P.A. Now (θ)
135°
Sep first
15.0
Sep last
15.8
Sep. Now (ρ)
15.8"
Mag pri
8.00
Mag sec
8.34
delta mag (ΔM)
0.34
Spectral class
A3V (white)
Pri motion ra
+014
Sec motion ra
Pri motion dec
-007
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20019-1733 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 163192 20019-1733 OCC 340 Aa,Ab 1974 1974 0 0.3 9.10 9.10 0.00
Show 163192 20019-1733 HJ 2918 AB 1830 2007 8 135 15.8 8.00 8.34 0.34 <===
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
134.8
Precise sep
15.8
Constellation
Sagittarius
SAO
163192
HIP
98623
Tycho2
6318-01074-1
Gaia DR2
51369145856
HD
189679
BD
BD-17 5835
Distance
229.89
Distance ly
749.9
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20019-1733 HJ 2918 AB 2007 9 135 15.8 8.00 8.34 A3V 200151.78-173300.3

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