09100-2845 B   179

 
 
09H 09M 57.24S -28 45' 20.7" P.A. 138.3 SEP 0.17 MAG 9.44,9.64 SP K0V DIST. 55.9 PC (182.35 L.Y.)
 
 
Coord 2000
09100-2845
Discov num
B   179
Comp
Coord arcsec 2000
09 09 57.24 -28 45 20.7
Date first
1927
Date last
2015
Obs
34
Pa first
161
Pa last
148
P.A. Now (θ)
138.3°
Sep first
0.4
Sep last
0.3
Sep. Now (ρ)
0.17"
Mag pri
9.44
Mag sec
9.64
delta mag (ΔM)
0.2
Spectral class
K0V (yellow-orange)
Pri motion ra
-013
Sec motion ra
-013
Pri motion dec
-077
Sec motion dec
-077
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Pyxis
SAO
177059
HIP
45003
Tycho2
6598-01373-1
HD
78921
ADS
7223
CD
CD-28 6981
CP
CP-28 3635
Distance
55.9
Distance ly
182.35
last precise pa
147.8
last precise sep
0.271
 
 
ORBITAL ELEMENTS
 
 
Period (P)83.79y Periastron (T)2019.3y Semi-major axis (a)0.47a
Eccentricity (e)0.816 Inclination (i)116.4° Longitude of periastron (ω)115.6°
Node (Ω)146.6° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2011
label rho theta
2000 0.525 170.2
2001 0.519 169.3
2002 0.512 168.4
2003 0.504 167.5
2004 0.494 166.5
2005 0.484 165.5
2006 0.472 164.4
2007 0.459 163.3
2008 0.444 162.1
2009 0.427 160.8
2010 0.409 159.4
2011 0.387 157.9
2012 0.363 156.1
2013 0.336 154.1
2014 0.304 151.8
2015 0.267 148.8
2016 0.223 144.7
2017 0.168 138.3
2018 0.100 124.0
2019 0.040 47.5
2020 0.096 334.9
2021 0.139 317.4
2022 0.160 306.5
2023 0.173 297.8
2024 0.183 290.1
2025 0.190 283.1
2026 0.197 276.6
2027 0.204 270.5
2028 0.211 264.8
2029 0.218 259.5
2030 0.226 254.5

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