23099-2227 RST 3320 (89 Aqr)

 
 
23h 09m 54.88s -22° 27' 27.3" P.A. 92.00 sep 0.2 mag 5.27,6.04 Sp G2IV+A2 dist. 154.56 pc (504.17 l.y.)
 
 
Coord 2000 23099-2227 Discov num RST3320 Comp Coord arcsec 2000 23 09 54.88 -22 27 27.3
Date first 1935 Date last 2018 Obs 47
Pa first 38 Pa last 91.8 P.A. Now (θ) 79.6°
Sep first 0.4 Sep last 0.245 Sep. Now (ρ) 0.283"
Mag pri 5.27 Mag sec 6.04 delta mag (ΔM) 0.77 Spectral class G2IV+A2 (yellow/white)
Pri motion ra +036 Sec motion ra
Pri motion dec -014 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 89 Aqr Constellation Aquarius SAO 191687 HIP 114375
Tycho2 6401-01356-1 Gaia DR2 2385897355615864192 HD 218640 HR 8817
GC 32262 GL Wo 9812A CD CD-2317771 CP CP-23 8278
Flamsteed 89 Aquarii Flamsteed name 89 Aqr Distance 154.56 Distance ly 504.17
 
 
ORBITAL ELEMENTS
 
 
Period (P)108.4y Periastron (T)2001.94y Semi-major axis (a)0.282a
Eccentricity (e)0.463 Inclination (i)162.4° Longitude of periastron (ω)314°
Node (Ω)156° Notesn ReferenceHrt2010a
Equinox2000 Last observation2009 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 220.5 0.148
2001 210.3 0.147
2002 200.0 0.148
2003 189.9 0.150
2004 180.2 0.153
2005 171.0 0.158
2006 162.3 0.163
2007 154.2 0.169
2008 146.7 0.176
2009 139.7 0.182
2010 133.3 0.190
2011 127.3 0.197
2012 121.7 0.204
2013 116.6 0.212
2014 111.7 0.219
2015 107.3 0.227
2016 103.1 0.234
2017 99.1 0.241
2018 95.4 0.249
2019 91.9 0.256
2020 88.6 0.263
2021 85.4 0.270
2022 82.4 0.277
2023 79.6 0.283
2024 76.9 0.290
2025 74.3 0.296
2026 71.8 0.302
2027 69.4 0.308
2028 67.1 0.314
2029 64.8 0.320
2030 62.7 0.325


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



 
 


wds23099-2227a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic