22288-0001 EBE 1 Aa,Ab

 
 
22h 28m 49.81s -00° 01' 12.2" P.A. 218.00 sep 0.7 mag 4.34,11.30 Sp F3IV-V dist. 28.17 pc (91.89 l.y.)
 
 
Coord 2000 22288-0001 Discov num EBE   1 Comp Aa,Ab Coord arcsec 2000 22 28 49.81 -00 01 12.2
Date first 2009 Date last 2021 Obs 16
Pa first 188 Pa last 217.6 P.A. Now (θ) 217.6°
Sep first 0.4 Sep last 0.669 Sep. Now (ρ) 0.669"
Mag pri 4.34 Mag sec 11.30 delta mag (ΔM) 6.96 Spectral class F3IV-V (yellow-white)
Pri motion ra +195 Sec motion ra +176
Pri motion dec +034 Sec motion dec +013
Notes N O (See Notes, Orbital solution)
rPM=0.143 (< 0.3, Physical double)
This double is physical.
 
 
22288-0001 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 146107 22 28 50 -00 01 12 EBE 1 Aa,Ab 2021 16 218 0.7 4.34 11.30 6.96 Y <===
Show Zet1 Aqr 146107 22 28 50 -00 01 12 STF 2909 AB 2021 1199 157 2.4 4.34 4.49 0.15 Y
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Aquarius SAO 146107 HIP 110960 Tycho2 5226-01605-1
HD 213052 HR 8558 GC 31398 ADS 15971
BD BD-00 4365 Bayer Zeta 1 Aquarii Bayer name Zet1 Aqr Flamsteed 55 Aquarii
Flamsteed name 55 Aqr Distance 28.17 Distance ly 91.89 Bayer greek ζ1 Aqr
 
 
ORBITAL ELEMENTS
 
 
Period (P)25.0866y± 0.3006 Periastron (T)2004.4333y± 0.6225 Semi-major axis (a)0.40878a± 0.02897
Eccentricity (e)0.73025± 0.04198 Inclination (i)64.677°± 4.092 Longitude of periastron (ω)343.108°± 17.983
Node (Ω)34.903°± 6.707 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 222.5 0.464
2001 226.4 0.382
2002 232.9 0.279
2003 249.1 0.152
2004 347.4 0.071
2005 59.1 0.109
2006 129.8 0.107
2007 166.6 0.185
2008 180.5 0.272
2009 187.8 0.353
2010 192.4 0.424
2011 195.8 0.486
2012 198.5 0.539
2013 200.7 0.583
2014 202.7 0.620
2015 204.4 0.649
2016 206.0 0.669
2017 207.5 0.683
2018 209.0 0.688
2019 210.5 0.685
2020 212.0 0.675
2021 213.6 0.655
2022 215.3 0.626
2023 217.2 0.586
2024 219.4 0.535
2025 222.2 0.471
2026 226.0 0.390
2027 232.2 0.289
2028 246.6 0.164
2029 334.5 0.067
2030 54.1 0.111


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



 
 


wds22288-0001h.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic