09260+2839 A   222

 
 
09H 26M 02.33S +28 39' 01.5" P.A. 4.8 SEP 0.4 MAG 9.13,9.41 SP F8 DIST. 111.61 PC (364.07 L.Y.)
 
 
Coord 2000
09260+2839
Discov num
A   222
Comp
Coord arcsec 2000
09 26 02.33 +28 39 01.5
Date first
1901
Date last
2009
Obs
45
Pa first
326
Pa last
11
P.A. Now (θ)
4.8°
Sep first
0.2
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
9.13
Mag sec
9.41
delta mag (ΔM)
0.28
Spectral class
F8 (yellow-white)
Pri motion ra
-082
Sec motion ra
Pri motion dec
-081
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Leo
SAO
80830
HIP
46269
Tycho2
1958-01539-1
HD
81387
ADS
7365
BD
BD+29 1900
Distance
111.61
Distance ly
364.07
last precise pa
11.4
last precise sep
0.385
 
 
ORBITAL ELEMENTS
 
 
Period (P)155.08y Periastron (T)1963.43y Semi-major axis (a)0.32a
Eccentricity (e)0.367 Inclination (i)123.5° Longitude of periastron (ω)40.3°
Node (Ω)191.1° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.343 19.3
2001 0.349 18.3
2002 0.354 17.3
2003 0.359 16.4
2004 0.364 15.4
2005 0.369 14.5
2006 0.373 13.6
2007 0.377 12.8
2008 0.381 11.9
2009 0.385 11.1
2010 0.388 10.3
2011 0.391 9.5
2012 0.393 8.7
2013 0.396 7.9
2014 0.398 7.1
2015 0.399 6.3
2016 0.401 5.6
2017 0.402 4.8
2018 0.403 4.1
2019 0.404 3.3
2020 0.405 2.6
2021 0.405 1.8
2022 0.405 1.1
2023 0.405 0.3
2024 0.405 359.6
2025 0.404 358.9
2026 0.403 358.1
2027 0.402 357.4
2028 0.401 356.6
2029 0.400 355.8
2030 0.398 355.1

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