23317+1956 WIR 1 AB (EQ Peg)

 
 
23h 31m 52.24s +19° 56' 14.0" P.A. 73.00 sep 5.3 mag 10.52,12.40 Sp M3.5V+M5V dist. 6.18 pc (20.16 l.y.)
 
 
Coord 2000 23317+1956 Discov num WIR   1 Comp AB Coord arcsec 2000 23 31 52.24 +19 56 14.0
Date first 1941 Date last 2020 Obs 75
Pa first 183 Pa last 73.2 P.A. Now (θ) 73.2°
Sep first 3.5 Sep last 5.286 Sep. Now (ρ) 5.286"
Mag pri 10.52 Mag sec 12.40 delta mag (ΔM) 1.88 Spectral class M3.5V+M5V (red/red)
Pri motion ra +554 Sec motion ra -078
Pri motion dec -063 Sec motion dec +108
Notes N O (See Notes, Orbital solution)
rPM=1.174
This double is physical.
 
 
23317+1956 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show EQ Peg 23 31 52 +19 56 14 WIR 1 AB 2020 75 73 5.3 10.52 12.40 1.88 Y <===
Show 23 31 52 +19 56 14 LMP 24 AC 2020 15 13 30.2 10.52 12.33 1.81
Show 23 31 52 +19 56 14 LMP 24 AD 2020 13 337 38.1 10.52 13.62 3.10
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name EQ Peg Constellation Pegasus HIP 116132 Tycho2 1723-00023-1
GL Gl 896A BD BD+19 5116 Distance 6.18 Distance ly 20.16
 
 
ORBITAL ELEMENTS
 
 
Period (P)182.791255y Periastron (T)1887.66538y Semi-major axis (a)4.7276a
Eccentricity (e)0.299996 Inclination (i)127.6685° Longitude of periastron (ω)119.7912°
Node (Ω)67.9962° Notesn ReferenceKpp2020f
Equinox Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 92.2 5.235
2001 91.3 5.258
2002 90.4 5.279
2003 89.4 5.298
2004 88.5 5.315
2005 87.6 5.331
2006 86.7 5.344
2007 85.8 5.355
2008 84.9 5.363
2009 84.0 5.370
2010 83.2 5.374
2011 82.3 5.376
2012 81.4 5.375
2013 80.5 5.372
2014 79.6 5.366
2015 78.7 5.358
2016 77.8 5.347
2017 76.9 5.333
2018 76.0 5.317
2019 75.1 5.297
2020 74.2 5.275
2021 73.3 5.249
2022 72.3 5.221
2023 71.4 5.189
2024 70.4 5.155
2025 69.4 5.117
2026 68.5 5.076
2027 67.4 5.031
2028 66.4 4.983
2029 65.4 4.932
2030 64.3 4.877


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



 
 


wds23317%2B1956d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic