17018-5108 I  1306

 
 
17h 01m 46.35s -51 07' 51.6" P.A. 197.2 sep 0.22 mag 7.23,7.27 Sp A7V dist. 104.49 pc (340.85 l.y.)
 
 
Coord 2000
17018-5108
Discov num
I  1306
Comp
Coord arcsec 2000
17 01 46.35 -51 07 51.6
Date first
1926
Date last
2015
Obs
16
Pa first
200
Pa last
196
P.A. Now (θ)
197.2°
Sep first
0.4
Sep last
0.2
Sep. Now (ρ)
0.22"
Mag pri
7.23
Mag sec
7.27
delta mag (ΔM)
0.04
Spectral class
A7V (white)
Pri motion ra
-005
Sec motion ra
Pri motion dec
-052
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
196.2
Precise sep
0.232
Constellation
Ara
SAO
244370
HIP
83321
Tycho2
8339-01997-1
HD
153370
HR
6312
CD
CD-5010955
CP
CP-50 9796
Distance
104.49
Distance ly
340.85
last precise pa
196.2
last precise sep
0.232
 
 
ORBITAL ELEMENTS
 
 
Period (P)193.7y Periastron (T)1989.59y Semi-major axis (a)0.317a
Eccentricity (e)0.187 Inclination (i)84.6° Longitude of periastron (ω)149°
Node (Ω)12.8° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.262 192.6
2001 0.264 192.8
2002 0.264 193.1
2003 0.265 193.3
2004 0.265 193.5
2005 0.264 193.8
2006 0.263 194.0
2007 0.261 194.3
2008 0.259 194.5
2009 0.257 194.8
2010 0.254 195.1
2011 0.251 195.3
2012 0.247 195.6
2013 0.243 195.9
2014 0.239 196.2
2015 0.234 196.5
2016 0.229 196.8
2017 0.224 197.2
2018 0.218 197.5
2019 0.212 197.9
2020 0.206 198.3
2021 0.200 198.7
2022 0.193 199.2
2023 0.186 199.6
2024 0.179 200.2
2025 0.171 200.7
2026 0.164 201.3
2027 0.156 202.0
2028 0.148 202.8
2029 0.140 203.6
2030 0.132 204.5

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





wds17018-5108a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17018-5108 I 1306 1992 12 191 0.2 7.23 7.27 A7V O 170146.35-510751.6
17018-5108 I 1306 2009 14 14 0.3 7.23 7.27 A7V O 170146.35-510751.6
17018-5108 I 1306 2013 15 196 0.2 7.23 7.27 A7V O 170146.35-510751.6
17018-5108 I 1306 2015 16 196 0.2 7.23 7.27 A7V O 170146.35-510751.6

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