09379+4554 A  1765

 
 
09H 37M 51.67S +45 54' 13.1" P.A. 328.5 SEP 0.17 MAG 9.40,8.85 SP F4III DIST. 107.87 PC (351.87 L.Y.)
 
 
Coord 2000
09379+4554
Discov num
A  1765
Comp
Coord arcsec 2000
09 37 51.67 +45 54 13.1
Date first
1908
Date last
2001
Obs
21
Pa first
304
Pa last
116
P.A. Now (θ)
328.5°
Sep first
0.2
Sep last
0.3
Sep. Now (ρ)
0.17"
Mag pri
9.40
Mag sec
8.85
delta mag (ΔM)
0.55
Spectral class
F4III (yellow-white)
Pri motion ra
-011
Sec motion ra
Pri motion dec
-066
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
116.4
Precise sep
0.265
Constellation
Ursa Major
SAO
42950
HIP
47250
Tycho2
3426-00343-1
HD
83158
ADS
7457
BD
BD+46 1528
Distance
107.87
Distance ly
351.87
last precise pa
116.4
last precise sep
0.265
 
 
ORBITAL ELEMENTS
 
 
Period (P)28.06y Periastron (T)1994.86y Semi-major axis (a)0.179a
Eccentricity (e)0.408 Inclination (i)117.2° Longitude of periastron (ω)268.3°
Node (Ω)131.5° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2001
label rho theta
2000 0.168 121.2
2001 0.170 115.2
2002 0.167 109.2
2003 0.161 102.8
2004 0.152 95.8
2005 0.142 87.8
2006 0.132 78.7
2007 0.124 68.2
2008 0.118 56.5
2009 0.115 43.8
2010 0.116 30.9
2011 0.121 18.6
2012 0.128 7.5
2013 0.137 357.7
2014 0.147 349.2
2015 0.155 341.7
2016 0.162 334.9
2017 0.166 328.5
2018 0.164 322.2
2019 0.156 315.6
2020 0.138 307.7
2021 0.110 296.5
2022 0.072 274.9
2023 0.048 219.4
2024 0.075 166.5
2025 0.112 146.2
2026 0.141 135.5
2027 0.159 127.9
2028 0.168 121.5
2029 0.170 115.6
2030 0.167 109.5

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