22220-3431 B 557 Aa,Ab

 
 
22h 21m 57.60s -34° 31' 13.0" P.A. 9.00 sep 0.1 mag 8.31,8.26 Sp F3/5V dist. 86.21 pc (281.22 l.y.)
 
 
Coord 2000 22220-3431 Discov num B   557 Comp Aa,Ab Coord arcsec 2000 22 21 57.60 -34 31 13.0
Date first 1926 Date last 2021 Obs 24
Pa first 344 Pa last 9 P.A. Now (θ) 3.5°
Sep first 0.3 Sep last 0.092 Sep. Now (ρ) 0.138"
Mag pri 8.31 Mag sec 8.26 delta mag (ΔM) 0.05 Spectral class F3/5V (yellow-white)
Pri motion ra +013 Sec motion ra
Pri motion dec +028 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
22220-3431 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 213765 22 21 58 -34 31 13 B 557 Aa,Ab 2021 24 9 0.1 8.31 8.26 0.05 Y <===
Show HD 212025 213765 22 21 58 -34 31 13 SHY 805 AB 2016 7 37 141.9 7.47 7.47 0.00
Show 213767 22 22 05 -34 29 20 SHY 802 BC 2016 4 297 999.9 7.47 6.41 1.06
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Piscis Austrinus SAO 213765 HIP 110419 Tycho2 7499-01159-1
Gaia DR2 6599618335825582464 HD 212025 CD CD-3515279 CP CP-35 9218
Distance 86.21 Distance ly 281.22
 
 
ORBITAL ELEMENTS
 
 
Period (P)107.97y± 4.79 Periastron (T)2020.02y± 0.13 Semi-major axis (a)0.3559a± 0.029
Eccentricity (e)0.893± 0.019 Inclination (i)112.6°± 2.4 Longitude of periastron (ω)72.8°± 1.7
Node (Ω)190°± 1.9 Notesn ReferenceTok2020e
Equinox Last observation2019 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 278.8 0.186
2001 276.6 0.181
2002 274.3 0.176
2003 271.9 0.172
2004 269.3 0.167
2005 266.7 0.163
2006 263.8 0.158
2007 260.8 0.153
2008 257.6 0.149
2009 254.2 0.144
2010 250.6 0.140
2011 246.7 0.135
2012 242.6 0.131
2013 238.2 0.126
2014 233.4 0.121
2015 228.1 0.115
2016 222.3 0.109
2017 215.6 0.100
2018 207.4 0.088
2019 195.3 0.067
2020 143.2 0.019
2021 19.1 0.062
2022 8.4 0.106
2023 3.5 0.138
2024 0.3 0.162
2025 357.8 0.183
2026 355.8 0.200
2027 354.1 0.215
2028 352.6 0.228
2029 351.3 0.240
2030 350.1 0.251


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


 
  


wds22220-3431c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 22220-3431 B 557 Aa,Ab : NOTES
 
 
discov_num notes refcode
SHY 805 AB: HIP 110419 + HIP 110433.
SHY 802 BC: HIP 110433 + HIP 109306.
 
 
REFERENCES
 
 
refcode metd author reference
Tok2020e St j Tokovinin, A., Mason, B.D., Mendez, R.A., Costa, E. & Horch, E.P. 2020AJ....160....7T
Tok2020e +orb AJ 160, 7, 2020
 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
212 SHY Shaya, E.J. & Olling, R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
22220-3431 B 557 Aa,Ab 2008 19 256 0.1 8.31 8.26 F3/5V 222157.60-343113.0
22220-3431 B 557 Aa,Ab 2017 20 209 0.1 8.31 8.26 F3/5V N 222157.60-343113.0
22220-3431 B 557 Aa,Ab 2018 21 203 0.1 8.31 8.26 F3/5V N 222157.60-343113.0
22220-3431 B 557 Aa,Ab 2019 22 182 0.0 8.31 8.26 F3/5V N 222157.60-343113.0
22220-3431 B 557 Aa,Ab 2020 23 19 0.1 8.31 8.26 F3/5V N 222157.60-343113.0
22220-3431 B 557 Aa,Ab 2021 24 9 0.1 8.31 8.26 F3/5V N 222157.60-343113.0

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WDS 22220-3431 B 557 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 22220-3431 B 557 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 22220-3431 : VIRTUAL EYEPIECE
 
 

virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 22220-3431 : ALADIN DSS IMAGE @
 
 
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.