11165-4553 HJ 4423

 
 
11H 16M 27.74S -45 52' 47.9" P.A. 278 SEP 2.6 MAG 6.96,7.27 SP F3V DIST. 52 PC (169.62 L.Y.)
 
 
Coord 2000
11165-4553
Discov num
HJ 4423
Comp
Coord arcsec 2000
11 16 27.74 -45 52 47.9
Date first
1836
Date last
2000
Obs
45
Pa first
269
Pa last
278
P.A. Now (θ)
278°
Sep first
1.3
Sep last
2.6
Sep. Now (ρ)
2.6"
Mag pri
6.96
Mag sec
7.27
delta mag (ΔM)
0.31
Spectral class
F3V (yellow-white)
Pri motion ra
-140
Sec motion ra
-140
Pri motion dec
+069
Sec motion dec
+069
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Centaurus
SAO
222687
HIP
55068
Tycho2
8213-02202-1
HD
98096
HR
4370
CD
CD-45 6837
CP
CP-45 5338
Distance
52
Distance ly
169.62
last precise pa
277.9
last precise sep
2.579
 
 
ORBITAL ELEMENTS
 
 
Period (P)1097.6y Periastron (T)2452.1y Semi-major axis (a)2.84a
Eccentricity (e)0.8 Inclination (i)88.6° Longitude of periastron (ω)114.8°
Node (Ω)277.9° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 2.561 275.5
2001 2.565 275.6
2002 2.568 275.6
2003 2.572 275.6
2004 2.575 275.6
2005 2.579 275.6
2006 2.583 275.6
2007 2.586 275.6
2008 2.589 275.6
2009 2.593 275.6
2010 2.596 275.6
2011 2.600 275.6
2012 2.603 275.6
2013 2.607 275.6
2014 2.610 275.6
2015 2.613 275.6
2016 2.617 275.6
2017 2.620 275.6
2018 2.623 275.7
2019 2.627 275.7
2020 2.630 275.7
2021 2.633 275.7
2022 2.637 275.7
2023 2.640 275.7
2024 2.643 275.7
2025 2.646 275.7
2026 2.649 275.7
2027 2.653 275.7
2028 2.656 275.7
2029 2.659 275.7
2030 2.662 275.7

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