21522+0538 JOD  23AB

 
 
21h 52m 10.41s +05 37' 35.8" P.A. 269.00 sep 0.1 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
2020
Obs
7
Pa first
61
Pa last
264
P.A. Now (θ)
269°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.13"
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 2020 7 269 0.1 14.00 14.50 0.50 Y <===
Show 21 52 10 +05 37 36 JOD 23 AC 2020 7 35 0.7 14.00 16.10 2.10
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
263.6
Precise sep
0.132
Constellation
Pegasus
HIP
107948
Gaia DR2
2697021694161423872
Distance
30.5
Distance ly
99.49
last precise pa
263.6
last precise sep
0.132
 
 
ORBITAL ELEMENTS
 
 
Period (P)9.39y± 0.13 Periastron (T)2019.48y± 0.04 Semi-major axis (a)0.142a± 0.002
Eccentricity (e)0.417± 0.011 Inclination (i) Longitude of periastron (ω)
Node (Ω)161.9°± 1.3 Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation2018
label rho theta
2000 0.099 98.5
2001 0.086 191.8
2002 0.124 259.7
2003 0.163 294.0
2004 0.188 316.6
2005 0.200 335.0
2006 0.199 352.5
2007 0.184 11.5
2008 0.156 35.7
2009 0.115 74.4
2010 0.083 152.7
2011 0.107 239.2
2012 0.149 282.7
2013 0.180 308.5
2014 0.197 328.1
2015 0.201 345.6
2016 0.191 3.7
2017 0.168 25.2
2018 0.132 56.4
2019 0.091 115.8
2020 0.092 211.4
2021 0.134 269.0
2022 0.170 299.6
2023 0.192 320.9
2024 0.201 338.9
2025 0.197 356.4
2026 0.179 16.2
2027 0.148 42.4
2028 0.106 87.1
2029 0.083 175.2
2030 0.117 251.5


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



 
 


wds21522%2B0538a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21522+0538 JOD 23 AB 2015 2 2 0.2 14.00 14.50 M3Ve R 215210.41+053735.8
21522+0538 JOD 23 AB 2017 4 45 0.1 14.00 14.50 M3Ve R 215210.41+053735.8
21522+0538 JOD 23 AB 2018 5 76 0.1 14.00 14.50 M3Ve R 215210.41+053735.8
21522+0538 JOD 23 AB 2019 6 171 0.1 14.00 14.50 M3Ve O R 215210.41+053735.8

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