09551-2632 I   843AB

 
 
09H 55M 06.30S -26 32' 19.4" P.A. 123.4 SEP 0.8 MAG 8.98,9.68 SP K1V
 
 
Coord 2000
09551-2632
Discov num
I   843
Comp
AB
Coord arcsec 2000
09 55 06.30 -26 32 19.4
Date first
1910
Date last
2011
Obs
22
Pa first
200
Pa last
130
P.A. Now (θ)
123.4°
Sep first
1.0
Sep last
0.9
Sep. Now (ρ)
0.8"
Mag pri
8.98
Mag sec
9.68
delta mag (ΔM)
0.7
Spectral class
K1V (yellow-orange)
Pri motion ra
-149
Sec motion ra
-149
Pri motion dec
-042
Sec motion dec
-042
Notes
O (Orbital solution)
This double is physical.
 
 
09551-2632 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 09551-2632 I 843 AB 1910 2011 22 123 0.8 8.98 9.68 0.70 Y <===
Show 09551-2632 I 843 AC 1926 1999 8 226 6.2 8.98 12.70 3.72
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hydra
HIP
48645
Tycho2
6612-01122-1
HD
85994
ADS
7580
last precise pa
130.1
last precise sep
0.923
 
 
ORBITAL ELEMENTS
 
 
Period (P)188.36y Periastron (T)1875.3y Semi-major axis (a)1.013a
Eccentricity (e)0.591 Inclination (i)130.7° Longitude of periastron (ω)232.5°
Node (Ω)204.7° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2011
label rho theta
2000 1.030 141.0
2001 1.019 140.1
2002 1.009 139.0
2003 0.999 138.0
2004 0.988 137.0
2005 0.978 135.9
2006 0.967 134.8
2007 0.957 133.7
2008 0.946 132.6
2009 0.936 131.4
2010 0.925 130.2
2011 0.914 129.0
2012 0.904 127.7
2013 0.893 126.5
2014 0.883 125.2
2015 0.873 123.8
2016 0.862 122.4
2017 0.852 121.0
2018 0.842 119.6
2019 0.832 118.1
2020 0.822 116.6
2021 0.812 115.1
2022 0.802 113.5
2023 0.792 111.9
2024 0.783 110.2
2025 0.773 108.5
2026 0.764 106.7
2027 0.755 105.0
2028 0.746 103.1
2029 0.737 101.2
2030 0.729 99.3

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