18197-4542 CHR 148

 
 
18h 19m 41.35s -45 41' 55.8" P.A. 52 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
52
P.A. Now (θ)
52°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.3"
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 O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
51.5
Precise sep
0.306
Constellation
Telescopium
SAO
228906
HIP
89808
Tycho2
8358-00989-1
HD
167954
GL
Wo 9624
CD
CD-4512390
CP
CP-45 9231
Distance
39.75
Distance ly
129.66
last precise pa
51.5
last precise sep
0.306
 
 
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 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation1991
label rho theta
2000-01-01 0.004 184.1
2001-01-01 0.004 185.0
2002-01-01 0.005 185.8
2003-01-01 0.005 186.5
2004-01-01 0.005 187.1
2005-01-01 0.005 187.8
2006-01-01 0.005 188.5
2007-01-01 0.004 189.4
2008-01-01 0.003 190.7
2009-01-01 0.002 193.1
2010-01-01 0.001 204.4
2011-01-01 0.001 358.4
2012-01-01 0.002 6.4
2013-01-01 0.003 9.3
2014-01-01 0.002 11.8
2015-01-01 0.002 15.3
2016-01-01 0.001 22.6
2017-01-01 54.3
2018-01-01 0.001 153.6
2019-01-01 0.001 172.9
2020-01-01 0.002 178.5
2021-01-01 0.003 181.2
2022-01-01 0.003 182.9
2023-01-01 0.004 184.1
2024-01-01 0.004 185.0
2025-01-01 0.005 185.8
2026-01-01 0.005 186.5
2027-01-01 0.005 187.1
2028-01-01 0.005 187.8
2029-01-01 0.005 188.5
2030-01-01 0.004 189.4

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

grafico orbita





wds18197-4542r.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
18197-4542 CHR 148 1989 1 52 0.3 6.85   F7V NO 181941.35-454155.8

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