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Doubles in session


Current system
21522+0538
JOD 23AB


Nearby doubles
12' : 21521+0549
J 916

16' : 21512+0546
HJ 3061

18' : 21514+0525
BAL2983

24' : 21530+0518
HU 379

32' : 21534+0512
HJ 3064

36' : 21504+0514
BRT2192

37' : 21502+0558
CBL 600

45' : 21492+0543
GIC 172

46' : 21524+0623
SKF1871

48' : 21547+0606
SLW1256

50' : 21542+0459
OSO 160AB

51' : 21489+0523
HU 281

62' : 21483+0518
BRT2294

64' : 21480+0521
BRT2293

86' : 21566+0633
HU 381

89' : 21462+0536
HJ 3057

90' : 21576+0501
HJ 3073

90' : 21580+0556
STF2848

92' : 21465+0611
GRV 502

96' : 21476+0431
CVR 920

99' : 21586+0601
SHJ 336AB

101' : 21465+0632
STT 450

102' : 21465+0635
UC 4556

103' : 21591+0541
GWP3111

105' : 21547+0400
BAL2565

107' : 21593+0537
HDS3123



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

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)0° Longitude of periastron (ω)0°
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

If you need more information about this double, apply for a data request form to the WDS.