17018-5108 I 1306 (HD 153370)

 
 
17h 01m 46.35s -51° 07' 51.6" P.A. 197.00 sep 0.2 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 2018 Obs 18
Pa first 200 Pa last 197 P.A. Now (θ) 197°
Sep first 0.4 Sep last 0.217 Sep. Now (ρ) 0.217"
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
 
 
Name HD 153370 Constellation Ara SAO 244370 HIP 83321
Tycho2 8339-01997-1 HD 153370 HR 6312 GC 22922
CD CD-5010955 CP CP-50 9796 Distance 104.49 Distance ly 340.85
 
 
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° Notes ReferenceTok2016e
Equinox2000 Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 192.6 0.262
2001 192.8 0.264
2002 193.1 0.264
2003 193.3 0.265
2004 193.5 0.265
2005 193.8 0.264
2006 194.0 0.263
2007 194.3 0.261
2008 194.5 0.259
2009 194.8 0.257
2010 195.1 0.254
2011 195.3 0.251
2012 195.6 0.247
2013 195.9 0.243
2014 196.2 0.239
2015 196.5 0.234
2016 196.8 0.229
2017 197.2 0.224
2018 197.5 0.218
2019 197.9 0.212
2020 198.3 0.206
2021 198.7 0.200
2022 199.2 0.193
2023 199.6 0.186
2024 200.2 0.179
2025 200.7 0.171
2026 201.3 0.164
2027 202.0 0.156
2028 202.8 0.148
2029 203.6 0.140
2030 204.5 0.132


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



 
 


wds17018-5108a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic