11317+1422 STF1547AB (88 Leo)

 
 
11H 31M 44.94S +14 21' 52.2" P.A. 332 SEP 15.36 MAG 6.33,9.14 SP G0V+G5 DIST. 23.33 PC (76.1 L.Y.)
 
 
Coord 2000
11317+1422
Discov num
STF1547
Comp
AB
Coord arcsec 2000
11 31 44.94 +14 21 52.2
Date first
1782
Date last
2015
Obs
107
Pa first
318
Pa last
332
P.A. Now (θ)
332°
Sep first
14.6
Sep last
15.7
Sep. Now (ρ)
15.36"
Mag pri
6.33
Mag sec
9.14
delta mag (ΔM)
2.81
Spectral class
G0V+G5 (yellow/yellow)
Pri motion ra
-328
Sec motion ra
-328
Pri motion dec
-190
Sec motion dec
-189
Notes
N O V (See Notes, Orbital solution, Proper motion indicates physical)
rPM=0.003 (< 0.3, Physical double)
This double is physical.
 
 
11317+1422 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 99648 11317+1422 WSI 101 Aa,Ab 2001 2008 3 15 0.2 7.00 7.10 0.10
Show 88 Leo 99648 11317+1422 STF1547 AB 1782 2015 107 332 15.4 6.33 9.14 2.81 Y <===
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
331.9
Precise sep
15.74
Name
88 Leo
Constellation
Leo
SAO
99648
HIP
56242
Tycho2
0862-01208-1
HD
100180
HR
4437
GC
15811
ADS
8196
GL
NN 3669A
BD
BD+15 2345
Flamsteed
88 Leonis
Flamsteed name
88 Leo
Distance
23.33
Distance ly
76.1
last precise pa
331.9
last precise sep
15.74
 
 
ORBITAL ELEMENTS
 
 
Period (P)3453y Periastron (T)1228y Semi-major axis (a)16.25a
Eccentricity (e)0.2 Inclination (i)58° Longitude of periastron (ω)100°
Node (Ω)138° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 15.402 330.9
2001 15.399 331.0
2002 15.397 331.1
2003 15.394 331.1
2004 15.391 331.2
2005 15.389 331.2
2006 15.386 331.3
2007 15.383 331.4
2008 15.381 331.4
2009 15.378 331.5
2010 15.375 331.5
2011 15.372 331.6
2012 15.369 331.7
2013 15.367 331.7
2014 15.364 331.8
2015 15.361 331.8
2016 15.358 331.9
2017 15.355 332.0
2018 15.352 332.0
2019 15.348 332.1
2020 15.345 332.1
2021 15.342 332.2
2022 15.339 332.3
2023 15.336 332.3
2024 15.333 332.4
2025 15.329 332.4
2026 15.326 332.5
2027 15.323 332.6
2028 15.319 332.6
2029 15.316 332.7
2030 15.312 332.8

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