18197-4542 CHR 148 (HD 167954)

 
 
18h 19m 41.35s -45° 41' 55.8" P.A. 52.00 sep 0.3 mag 6.85, Sp F7V dist. 39.75 pc (129.66 l.y.)
 
 
Coord 2000 18197-4542 Discov num CHR 148 Comp Coord arcsec 2000 18 19 41.35 -45 41 55.8
Date first 1989 Date last 1989 Obs 1
Pa first 52 Pa last 51.5 P.A. Now (θ) 51.5°
Sep first 0.3 Sep last 0.306 Sep. Now (ρ) 0.306"
Mag pri 6.85 Mag sec delta mag (ΔM) Spectral class F7V (yellow-white)
Pri motion ra -076 Sec motion ra
Pri motion dec -143 Sec motion dec
Notes N X O (See Notes, Dubious double, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 167954 Constellation Telescopium SAO 228906 HIP 89808
Tycho2 8358-00989-1 Gaia DR2 6708063202046601344 HD 167954 GC 24981
GL Wo 9624 CD CD-4512390 CP CP-45 9231 Distance 39.75
Distance ly 129.66
 
 
ORBITAL ELEMENTS
 
 
Period (P)120.0074d Periastron (T)30003.2812d (1941.022y) Semi-major axis (a)3.95m± 0.7
Eccentricity (e)0.4282 Inclination (i)85.81°± 16.32 Longitude of periastron (ω)134.41°
Node (Ω)188.34°± 15.09 Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 184.1 0.004
2001-01-01 185.0 0.004
2002-01-01 185.8 0.005
2003-01-01 186.5 0.005
2004-01-01 187.1 0.005
2005-01-01 187.8 0.005
2006-01-01 188.5 0.005
2007-01-01 189.4 0.004
2008-01-01 190.7 0.003
2009-01-01 193.1 0.002
2010-01-01 204.4 0.001
2011-01-01 358.4 0.001
2012-01-01 6.4 0.002
2013-01-01 9.3 0.003
2014-01-01 11.8 0.002
2015-01-01 15.3 0.002
2016-01-01 22.6 0.001
2017-01-01 54.3
2018-01-01 153.6 0.001
2019-01-01 172.9 0.001
2020-01-01 178.5 0.002
2021-01-01 181.2 0.003
2022-01-01 182.9 0.003
2023-01-01 184.1 0.004
2024-01-01 185.0 0.004
2025-01-01 185.8 0.005
2026-01-01 186.5 0.005
2027-01-01 187.1 0.005
2028-01-01 187.8 0.005
2029-01-01 188.5 0.005
2030-01-01 189.4 0.004


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



 
 


wds18197-4542r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic