17269-4551 HJ 4949AB

 
 
17h 26m 51.98s -45 50' 34.7" P.A. 251 sep 2.1 mag 5.63,6.46 Sp B7V+B9.5V dist. 194.93 pc (635.86 l.y.)
 
 
Coord 2000
17269-4551
Discov num
HJ 4949
Comp
AB
Coord arcsec 2000
17 26 51.98 -45 50 34.7
Date first
1834
Date last
2016
Obs
54
Pa first
268
Pa last
251
P.A. Now (θ)
251°
Sep first
2.0
Sep last
2.1
Sep. Now (ρ)
2.1"
Mag pri
5.63
Mag sec
6.46
delta mag (ΔM)
0.83
Spectral class
B7V+B9.5V (blue-white/blue-white)
Pri motion ra
+001
Sec motion ra
Pri motion dec
-029
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
17269-4551 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 227971 17269-4551 HJ 4949 AB 1834 2016 54 251 2.1 5.63 6.46 0.83 <===
Show 227971 17269-4551 DUN 216 AC 1836 2016 17 312 102.5 5.63 7.12 1.49
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
251.1
Precise sep
2.12
Constellation
Ara
SAO
227971
HIP
85389
Tycho2
8342-06345-1
HD
157661
HR
6477
CD
CD-4511531
CP
CP-45 8580
Distance
194.93
Distance ly
635.86
last precise pa
251.1
last precise sep
2.12
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17269-4551 HJ 4949 AB 2007 52 252 2.1 5.63 6.46 B7V+B9.5V D 172651.98-455034.7
17269-4551 HJ 4949 AB 2013 53 249 2.1 5.63 6.46 B7V+B9.5V D 172651.98-455034.7
17269-4551 HJ 4949 AB 2016 54 251 2.1 5.63 6.46 B7V+B9.5V 172651.98-455034.7

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