09245+1808 A  2477

 
 
09H 24M 31.21S +18 08' 29.1" P.A. 5.9 SEP 0.43 MAG 7.46,9.18 SP K0IV DIST. 170.36 PC (555.71 L.Y.)
 
 
Coord 2000
09245+1808
Discov num
A  2477
Comp
Coord arcsec 2000
09 24 31.21 +18 08 29.1
Date first
1912
Date last
2013
Obs
68
Pa first
236
Pa last
3
P.A. Now (θ)
5.9°
Sep first
0.3
Sep last
0.5
Sep. Now (ρ)
0.43"
Mag pri
7.46
Mag sec
9.18
delta mag (ΔM)
1.72
Spectral class
K0IV (yellow-orange)
Pri motion ra
-032
Sec motion ra
-032
Pri motion dec
-033
Sec motion dec
-033
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Leo
SAO
98552
HIP
46137
Tycho2
1405-01091-1
HD
81163
ADS
7341
BD
BD+18 2182
Distance
170.36
Distance ly
555.71
last precise pa
3.4
last precise sep
0.452
 
 
ORBITAL ELEMENTS
 
 
Period (P)250y Periastron (T)2111.3y Semi-major axis (a)0.392a
Eccentricity (e)0.14 Inclination (i)38° Longitude of periastron (ω)313.3°
Node (Ω)195.7° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 0.421 349.8
2001 0.422 350.8
2002 0.423 351.8
2003 0.424 352.7
2004 0.425 353.7
2005 0.426 354.6
2006 0.427 355.6
2007 0.427 356.5
2008 0.428 357.5
2009 0.429 358.4
2010 0.429 359.4
2011 0.430 0.3
2012 0.430 1.2
2013 0.430 2.2
2014 0.431 3.1
2015 0.431 4.0
2016 0.431 5.0
2017 0.431 5.9
2018 0.431 6.8
2019 0.430 7.8
2020 0.430 8.7
2021 0.430 9.6
2022 0.429 10.6
2023 0.429 11.5
2024 0.428 12.4
2025 0.427 13.4
2026 0.427 14.3
2027 0.426 15.3
2028 0.425 16.2
2029 0.423 17.2
2030 0.422 18.2

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