09167-0621 KUI  40 (23 Hya)

 
 
09h 16m 41.72s -06 21' 11.4" P.A. 287 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
2017
Obs
21
Pa first
282
Pa last
287
P.A. Now (θ)
287°
Sep first
1.6
Sep last
1.3
Sep. Now (ρ)
1.3"
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
 
 
Precise pa
287
Precise sep
1.349
Name
23 Hya
Cdsa2 id
KUI 40
Constellation
Hydra
SAO
136725
HIP
45527
Tycho2
4892-01405-1
HD
79910
HR
3681
GC
12800
BD
BD-05 2762
Flamsteed
23 Hydrae
Flamsteed name
23 Hya
Ra deg
9.278255555555557
De deg
-6.353166666666667
Distance
75.24
Distance ly
245.43
last precise pa
287
last precise sep
1.349
 
 
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 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation1991
label rho theta
2000-01-01 0.002 270.9
2001-01-01 0.005 97.0
2002-01-01 0.010 283.9
2003-01-01 0.010 102.5
2004-01-01 0.004 292.1
2005-01-01 0.003 277.2
2006-01-01 0.006 98.0
2007-01-01 0.010 284.2
2008-01-01 0.010 102.9
2009-01-01 0.003 295.5
2010-01-01 0.005 279.4
2011-01-01 0.007 98.8
2012-01-01 0.010 284.6
2013-01-01 0.009 103.3
2014-01-01 0.002 302.0
2015-01-01 0.006 280.5
2016-01-01 0.008 99.5
2017-01-01 0.009 285.0
2018-01-01 0.008 103.7
2019-01-01 0.001 319.9
2020-01-01 0.007 281.3
2021-01-01 0.008 100.0
2022-01-01 0.009 285.4
2023-01-01 0.007 104.3
2024-01-01 0.001 24.5
2025-01-01 0.008 281.8
2026-01-01 0.009 100.4
2027-01-01 0.008 285.9
2028-01-01 0.006 105.1
2029-01-01 0.001 73.0
2030-01-01 0.009 282.3

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

grafico orbita





wds09167-0621r.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
09167-0621 KUI 40 1959 7 283 1.6 5.30 10.80 K2III NO 091641.72-062111.4
09167-0621 KUI 40 2009 8 286 1.4 5.30 10.80 K2III NO 091641.72-062111.4
09167-0621 KUI 40 2010 10 286 1.4 5.30 10.80 K2III NO 091641.72-062111.4
09167-0621 KUI 40 2015 13 287 1.4 5.30 10.80 K2III NO 091641.72-062111.4
09167-0621 KUI 40 2017 21 287 1.3 5.30 10.80 K2III NO 091641.72-062111.4

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