17031-5314 HDO 263AB (Eps2 Ara)

 
 
17h 03m 08.76s -53 14' 13.1" P.A. 18 sep 46.1 mag 5.33,13.85 Sp F5V dist. 27.23 pc (88.82 l.y.)
 
 
Coord 2000
17031-5314
Discov num
HDO 263
Comp
AB
Coord arcsec 2000
17 03 08.76 -53 14 13.1
Date first
1891
Date last
1999
Obs
2
Pa first
20
Pa last
18
P.A. Now (θ)
18°
Sep first
25.0
Sep last
46.1
Sep. Now (ρ)
46.1"
Mag pri
5.33
Mag sec
13.85
delta mag (ΔM)
8.52
Spectral class
F5V (yellow-white)
Pri motion ra
-017
Sec motion ra
+013
Pri motion dec
-118
Sec motion dec
+007
Notes
N (See Notes)
rPM=1.078
This double is not physical.
 
 
17031-5314 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 244388 17031-5314 HDS2412 Aa,Ab 1991 2015 11 169 0.6 5.44 8.65 3.21 Y
Show Eps2 Ara 244388 17031-5314 HDO 263 AB 1891 1999 2 18 46.1 5.33 13.85 8.52 <===
Show 244388 17031-5314 SKF 103 AC 1998 1999 2 258 113.7 5.33 13.48 8.15
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
17.6
Precise sep
46.09
Name
Eps2 Ara
Constellation
Ara
SAO
244388
HIP
83431
Tycho2
8726-02209-1
HD
153580
HR
6314
GC
22956
GL
NN 3985
CP
CP-53 8316
Bayer
Epsilon 2 Arae
Bayer name
Eps2 Ara
Distance
27.23
Distance ly
88.82
last precise pa
17.6
last precise sep
46.09
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17031-5314 HDO 263 AB 1891 1 20 25.0 5.29 13.00 F6V N D 170308.71-531411.9
17031-5314 HDO 263 AB 1999 2 18 46.1 5.33 13.85 F5V N D 170308.76-531413.1

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