11317+1422 STF 1547 AB (88 Leo)

 
 
11h 31m 44.94s +14° 21' 52.2" P.A. 330.00 sep 15.7 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 2020 Obs 115
Pa first 318 Pa last 330.4 P.A. Now (θ) 330.4°
Sep first 14.6 Sep last 15.68 Sep. Now (ρ) 15.68"
Mag pri 6.33 Mag sec 9.14 delta mag (ΔM) 2.81 Spectral class G0V+G5 (yellow/yellow)
Pri motion ra -330 Sec motion ra -316
Pri motion dec -190 Sec motion dec -181
Notes N O V (See Notes, Orbital solution, Proper motion indicates physical)
rPM=0.044 (< 0.3, Physical double)
This double is physical.
 
 
11317+1422 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 99648 11 31 45 +14 21 52 WSI 101 Aa,Ab 2008 3 15 0.2 7.00 7.10 0.10
Show 88 Leo 99648 11 31 45 +14 21 52 STF 1547 AB 2020 115 330 15.7 6.33 9.14 2.81 Y <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
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
 
 
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° Notesn ReferenceHrt2013b
Equinox2000 Last observation2013 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 330.9 15.402
2001 331.0 15.399
2002 331.1 15.397
2003 331.1 15.394
2004 331.2 15.391
2005 331.2 15.389
2006 331.3 15.386
2007 331.4 15.383
2008 331.4 15.381
2009 331.5 15.378
2010 331.5 15.375
2011 331.6 15.372
2012 331.7 15.369
2013 331.7 15.367
2014 331.8 15.364
2015 331.8 15.361
2016 331.9 15.358
2017 332.0 15.355
2018 332.0 15.352
2019 332.1 15.348
2020 332.1 15.345
2021 332.2 15.342
2022 332.3 15.339
2023 332.3 15.336
2024 332.4 15.333
2025 332.4 15.329
2026 332.5 15.326
2027 332.6 15.323
2028 332.6 15.319
2029 332.7 15.316
2030 332.8 15.312


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds11317%2B1422a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic