09149+0427 HEI 350

 
 
09H 14M 53.72S +04 26' 34.4" P.A. 16.7 SEP 0.7 MAG 8.00,11.00 SP K0 DIST. 17.96 PC (58.59 L.Y.)
 
 
Coord 2000
09149+0427
Discov num
HEI 350
Comp
Coord arcsec 2000
09 14 53.72 +04 26 34.4
Date first
1987
Date last
2015
Obs
9
Pa first
7
Pa last
27
P.A. Now (θ)
16.7°
Sep first
0.7
Sep last
0.7
Sep. Now (ρ)
0.7"
Mag pri
8.00
Mag sec
11.00
delta mag (ΔM)
3
Spectral class
K0 (yellow-orange)
Pri motion ra
-102
Sec motion ra
Pri motion dec
+020
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hydra
HIP
45383
Tycho2
0230-00407-1
HD
79555
GL
Gl 339A
BD
BD+05 2143
Distance
17.96
Distance ly
58.59
last precise pa
26.8
last precise sep
0.711
 
 
ORBITAL ELEMENTS
 
 
Period (P)62.68y± 2.88 Periastron (T)1984.83y± 1.6 Semi-major axis (a)0.81a± 0.037
Eccentricity (e)0.2 Inclination (i)136°± 3 Longitude of periastron (ω)263.6°± 10.6
Node (Ω)102.3°± 2.1 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.823 92.6
2001 0.828 88.7
2002 0.830 84.9
2003 0.828 81.0
2004 0.824 77.1
2005 0.818 73.2
2006 0.809 69.2
2007 0.799 65.1
2008 0.788 60.9
2009 0.776 56.5
2010 0.763 52.0
2011 0.751 47.4
2012 0.739 42.6
2013 0.728 37.7
2014 0.718 32.6
2015 0.710 27.4
2016 0.704 22.1
2017 0.700 16.7
2018 0.698 11.2
2019 0.698 5.8
2020 0.701 0.4
2021 0.705 355.0
2022 0.711 349.7
2023 0.719 344.5
2024 0.728 339.4
2025 0.738 334.5
2026 0.749 329.7
2027 0.759 325.0
2028 0.769 320.4
2029 0.778 316.0
2030 0.785 311.7

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