21522+0538 JOD 23 AB

21h 52m 10.41s +05° 37' 35.8" P.A. 288.00 sep 0.2 mag 14.00,14.50 Sp M3Ve dist. 30.5 pc (99.49 l.y.)

Coord 2000 21522+0538 Discov num JOD  23 Comp AB Coord arcsec 2000 21 52 10.41 +05 37 35.8
Date first 2008 Date last 2021 Obs 10
Pa first 61 Pa last 287.9 P.A. Now (θ) 287.9°
Sep first 0.1 Sep last 0.163 Sep. Now (ρ) 0.163"
Mag pri 14.00 Mag sec 14.50 delta mag (ΔM) 0.5 Spectral class M3Ve (red)
Pri motion ra +119 Sec motion ra
Pri motion dec -150 Sec motion dec
Notes O R (Orbital solution, Red magnitudes)




This double is physical.



21522+0538 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21 52 10 +05 37 36 JOD 23 AB 2021 10 288 0.2 14.00 14.50 0.50 Y <===
Show 21 52 10 +05 37 36 JOD 23 AC 2021 10 35 0.7 14.00 16.10 2.10


Triple system
3 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Pegasus HIP 107948 Gaia DR2 2697021694161423872 Distance 30.5
Distance ly 99.49




ORBITAL ELEMENTS

Period (P)9.08y± 0.11 Periastron (T)2019.38y± 0.02 Semi-major axis (a)0.1406a± 0.0013
Eccentricity (e)0.447± 0.008 Inclination (i) Longitude of periastron (ω)
Node (Ω)163.7°± 1.2 Notes ReferenceTok2020e
Equinox Last observation2019 Grade4(1=Definitive, 9=Indet.)

label theta rho
2000 63.6 0.122
2001 138.7 0.080
2002 238.7 0.101
2003 285.5 0.147
2004 311.5 0.181
2005 330.6 0.199
2006 347.8 0.203
2007 5.5 0.192
2008 27.1 0.167
2009 60.0 0.126
2010 130.1 0.082
2011 233.0 0.097
2012 282.9 0.144
2013 309.7 0.179
2014 329.2 0.198
2015 346.4 0.203
2016 4.0 0.194
2017 25.1 0.169
2018 56.5 0.130
2019 122.0 0.084
2020 226.8 0.094
2021 280.1 0.140
2022 307.9 0.177
2023 327.8 0.197
2024 345.1 0.203
2025 2.5 0.195
2026 23.2 0.172
2027 53.3 0.133
2028 114.4 0.087
2029 220.2 0.090
2030 277.2 0.137


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



 
 


wds21522%2B0538b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic