11268+0301 STF1540AB (83 Leo)

 
 
11H 26M 45.32S +03 00' 47.2" P.A. 149 SEP 28.2 MAG 6.55,7.50 SP G7V DIST. 17.75 PC (57.9 L.Y.)
 
 
Coord 2000
11268+0301
Discov num
STF1540
Comp
AB
Coord arcsec 2000
11 26 45.32 +03 00 47.2
Date first
1780
Date last
2016
Obs
137
Pa first
145
Pa last
149
P.A. Now (θ)
149°
Sep first
29.1
Sep last
28.2
Sep. Now (ρ)
28.2"
Mag pri
6.55
Mag sec
7.50
delta mag (ΔM)
0.95
Spectral class
G7V (yellow)
Pri motion ra
-726
Sec motion ra
-730
Pri motion dec
+182
Sec motion dec
+191
Notes
N O Z (See Notes, Orbital solution, Parallax indicates components are physical)
rPM=0.013 (< 0.3, Physical double)
This double is physical.
 
 
11268+0301 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 83 Leo 118864 11268+0301 STF1540 AB 1780 2016 137 149 28.2 6.55 7.50 0.95 Y <===
Show 118864 11268+0301 STF1540 AC 1936 2016 7 191 205.2 6.55 11.13 4.58
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
83 Leo
Constellation
Leo
SAO
118864
HIP
55846
Tycho2
0267-01191-1
HD
99491
HR
4414
GC
15705
ADS
8162
GL
Gl 429A
BD
BD+03 2502
Flamsteed
83 Leonis
Flamsteed name
83 Leo
Distance
17.75
Distance ly
57.9
last precise pa
149.4
last precise sep
28.23
 
 
ORBITAL ELEMENTS
 
 
Period (P)320c Periastron (T)5200y Semi-major axis (a)40.76a
Eccentricity (e)0.46 Inclination (i)126.6° Longitude of periastron (ω)112.9°
Node (Ω)164.3° Note Grade5(1=Definitive, 9=Indet.)
Equinox1900 Last observation1959
label rho theta
2000 28.723 146.9
2001 28.716 146.9
2002 28.710 146.9
2003 28.703 146.9
2004 28.697 146.9
2005 28.690 146.9
2006 28.684 146.9
2007 28.677 146.9
2008 28.671 146.8
2009 28.664 146.8
2010 28.658 146.8
2011 28.651 146.8
2012 28.645 146.8
2013 28.638 146.8
2014 28.632 146.8
2015 28.625 146.8
2016 28.619 146.8
2017 28.612 146.7
2018 28.606 146.7
2019 28.599 146.7
2020 28.593 146.7
2021 28.586 146.7
2022 28.579 146.7
2023 28.573 146.7
2024 28.566 146.7
2025 28.560 146.6
2026 28.553 146.6
2027 28.547 146.6
2028 28.540 146.6
2029 28.534 146.6
2030 28.527 146.6

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