09474+1134 MCA  34 (19 Leo)

 
 
09H 47M 25.99S +11 34' 05.4" P.A. 171.2 SEP 0.04 MAG 6.40,6.90 SP A7V DIST. 84.67 PC (276.19 L.Y.)
 
 
Coord 2000
09474+1134
Discov num
MCA  34
Comp
Coord arcsec 2000
09 47 25.99 +11 34 05.4
Date first
1975
Date last
2015
Obs
45
Pa first
177
Pa last
113
P.A. Now (θ)
171.2°
Sep first
0.0
Sep last
0.0
Sep. Now (ρ)
0.04"
Mag pri
6.40
Mag sec
6.90
delta mag (ΔM)
0.5
Spectral class
A7V (white)
Pri motion ra
-050
Sec motion ra
Pri motion dec
+001
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
19 Leo
Constellation
Leo
SAO
98767
HIP
48029
Tycho2
0831-00841-1
HD
84722
HR
3880
GC
13485
BD
BD+12 2095
Flamsteed
19 Leonis
Flamsteed name
19 Leo
Distance
84.67
Distance ly
276.19
last precise pa
113.2
last precise sep
0.028
 
 
ORBITAL ELEMENTS
 
 
Period (P)15.28y Periastron (T)1973.55y Semi-major axis (a)0.111a
Eccentricity (e)0.318 Inclination (i)75.9° Longitude of periastron (ω)23.9°
Node (Ω)203° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2007
label rho theta
2000 0.045 64.0
2001 0.028 128.8
2002 0.052 179.5
2003 0.075 196.2
2004 0.072 207.7
2005 0.038 230.5
2006 0.029 333.6
2007 0.071 6.2
2008 0.107 14.8
2009 0.130 19.6
2010 0.141 23.2
2011 0.141 26.5
2012 0.131 30.1
2013 0.112 34.6
2014 0.085 41.6
2015 0.054 56.2
2016 0.028 104.9
2017 0.044 171.2
2018 0.070 192.6
2019 0.076 204.3
2020 0.050 220.7
2021 0.022 303.6
2022 0.060 1.8
2023 0.098 13.0
2024 0.125 18.4
2025 0.139 22.2
2026 0.142 25.6
2027 0.135 29.1
2028 0.118 33.2
2029 0.093 39.2
2030 0.063 50.6

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