09167-0621 KUI 40 (23 Hya)

 
 
09h 16m 41.72s -06° 21' 11.4" P.A. 287.00 sep 1.3 mag 5.30,10.80 Sp K2III dist. 75.24 pc (245.43 l.y.)
 
 
Coord 2000 09167-0621 Discov num KUI  40 Comp Coord arcsec 2000 09 16 41.72 -06 21 11.4
Date first 1936 Date last 2019 Obs 26
Pa first 282 Pa last 287.4 P.A. Now (θ) 287.4°
Sep first 1.6 Sep last 1.34 Sep. Now (ρ) 1.34"
Mag pri 5.30 Mag sec 10.80 delta mag (ΔM) 5.5 Spectral class K2III (yellow-orange)
Pri motion ra +024 Sec motion ra
Pri motion dec +006 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 23 Hya Constellation Hydra SAO 136725 HIP 45527
Tycho2 4892-01405-1 Gaia DR2 5746003103393343232 HD 79910 HR 3681
GC 12800 BD BD-05 2762 Flamsteed 23 Hydrae Flamsteed name 23 Hya
FK5 2739 Distance 75.24 Distance ly 245.43
 
 
ORBITAL ELEMENTS
 
 
Period (P)922d (2.52y) Periastron (T)48797.8516d (1992.48y)± 25.6477 Semi-major axis (a)10.64m± 2.79
Eccentricity (e)0.293 Inclination (i)92.6°± 4.66 Longitude of periastron (ω)92.27°
Node (Ω)282.8°± 5.28 Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 270.9 0.002
2001-01-01 97.0 0.005
2002-01-01 283.9 0.010
2003-01-01 102.5 0.010
2004-01-01 292.1 0.004
2005-01-01 277.2 0.003
2006-01-01 98.0 0.006
2007-01-01 284.2 0.010
2008-01-01 102.9 0.010
2009-01-01 295.5 0.003
2010-01-01 279.4 0.005
2011-01-01 98.8 0.007
2012-01-01 284.6 0.010
2013-01-01 103.3 0.009
2014-01-01 302.0 0.002
2015-01-01 280.5 0.006
2016-01-01 99.5 0.008
2017-01-01 285.0 0.009
2018-01-01 103.7 0.008
2019-01-01 319.9 0.001
2020-01-01 281.3 0.007
2021-01-01 100.0 0.008
2022-01-01 285.4 0.009
2023-01-01 104.3 0.007
2024-01-01 24.5 0.001
2025-01-01 281.8 0.008
2026-01-01 100.4 0.009
2027-01-01 285.9 0.008
2028-01-01 105.1 0.006
2029-01-01 73.0 0.001
2030-01-01 282.3 0.009


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



 
 


wds09167-0621r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic