18540-4716 DUN 224AC

 
 
18h 54m 01.61s -47 16' 27.4" P.A. 62 sep 87.2 mag 7.11,7.28 Sp A0IV/V dist. 68.92 pc (224.82 l.y.)
 
 
Coord 2000
18540-4716
Discov num
DUN 224
Comp
AC
Coord arcsec 2000
18 54 01.61 -47 16 27.4
Date first
1835
Date last
2016
Obs
21
Pa first
64
Pa last
62
P.A. Now (θ)
62°
Sep first
82.1
Sep last
87.2
Sep. Now (ρ)
87.2"
Mag pri
7.11
Mag sec
7.28
delta mag (ΔM)
0.17
Spectral class
A0IV/V (white)
Pri motion ra
-009
Sec motion ra
+021
Pri motion dec
-038
Sec motion dec
-021
Notes
Z (Parallax indicates components are physical)
rPM=0.883
This double is physical.
 
 
18540-4716 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 229354 18540-4716 I 112 AB 1896 2016 18 193 2.1 7.11 9.05 1.94
Show 229354 18540-4716 DUN 224 AC 1835 2016 21 62 87.2 7.11 7.28 0.17 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
61.8
Precise sep
87.2
Constellation
Telescopium
SAO
229354
HIP
92750
Tycho2
8377-00464-1
HD
174691
CD
CD-4712603
CP
CP-47 9096
Distance
68.92
Distance ly
224.82
last precise pa
61.8
last precise sep
87.2
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18540-4716 DUN 224 AC 1998 17 62 86.7 7.11 7.28 A0IV/V ZD 185401.61-471627.4
18540-4716 DUN 224 AC 2010 18 62 87.1 7.11 7.28 A0IV/V ZD 185401.61-471627.4
18540-4716 DUN 224 AC 2013 21 61 86.7 7.11 7.28 A0IV/V ZD 185401.61-471627.4
18540-4716 DUN 224 AC 2016 21 62 87.2 7.11 7.28 A0IV/V Z 185401.61-471627.4

If you need more information about this double, apply for a data request form to the WDS.