18232-6130 GLE   2 (Xi Pav)

 
 
18H 23M 13.62S -61 29' 38.1" P.A. 159 SEP 3.7 MAG 4.54,8.10 SP K4III DIST. 143.68 PC (468.68 L.Y.)
 
 
Coord 2000
18232-6130
Discov num
GLE   2
Comp
Coord arcsec 2000
18 23 13.62 -61 29 38.1
Date first
1894
Date last
2016
Obs
22
Pa first
140
Pa last
159
P.A. Now (θ)
159°
Sep first
4.0
Sep last
3.7
Sep. Now (ρ)
3.7"
Mag pri
4.54
Mag sec
8.10
delta mag (ΔM)
3.56
Spectral class
K4III (yellow-orange)
Pri motion ra
+001
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
Xi Pav
Constellation
Pavo
SAO
254226
HIP
90098
Tycho2
9068-02823-1
HD
168339
HR
6855
GC
25045
CP
CP-61 6140
Bayer
Xi Pavonis
Bayer name
Xi Pav
Distance
143.68
Distance ly
468.68
last precise pa
158.6
last precise sep
3.71
 
 
ORBITAL ELEMENTS
 
 
Period (P)2214d (6.06y) Periastron (T)18076.2d (1908.367y) Semi-major axis (a)30.7m± 4.1
Eccentricity (e)0.26 Inclination (i)56°± 7 Longitude of periastron (ω)187.2°
Node (Ω)54.6°± 8.4 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation1992
label rho theta
2000-01-01 0.016 298.2
2001-01-01 0.028 25.4
2002-01-01 0.038 52.0
2003-01-01 0.034 74.0
2004-01-01 0.019 122.3
2005-01-01 0.022 217.4
2006-01-01 0.016 290.8
2007-01-01 0.027 22.9
2008-01-01 0.038 50.8
2009-01-01 0.034 72.4
2010-01-01 0.019 117.1
2011-01-01 0.021 213.3
2012-01-01 0.017 283.8
2013-01-01 0.025 20.1
2014-01-01 0.038 49.5
2015-01-01 0.035 70.8
2016-01-01 0.020 112.3
2017-01-01 0.021 209.0
2018-01-01 0.017 277.4
2019-01-01 0.024 17.1
2020-01-01 0.037 48.2
2021-01-01 0.036 69.3
2022-01-01 0.021 107.9
2023-01-01 0.020 204.5
2024-01-01 0.018 271.5
2025-01-01 0.023 13.8
2026-01-01 0.037 46.8
2027-01-01 0.036 67.9
2028-01-01 0.022 104.0
2029-01-01 0.019 199.6
2030-01-01 0.019 266.0

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic