11053-2718 FIN  47AB (Chi1 Hya)

 
 
11H 05M 20.03S -27 17' 36.9" P.A. 48 SEP 0.15 MAG 5.70,5.70 SP F3IV DIST. 43.23 PC (141.02 L.Y.)
 
 
Coord 2000
11053-2718
Discov num
FIN  47
Comp
AB
Coord arcsec 2000
11 05 20.03 -27 17 36.9
Date first
1927
Date last
2009
Obs
69
Pa first
46
Pa last
48
P.A. Now (θ)
48°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.15"
Mag pri
5.70
Mag sec
5.70
delta mag (ΔM)
0
Spectral class
F3IV (yellow-white)
Pri motion ra
-188
Sec motion ra
Pri motion dec
-004
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
11053-2718 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Chi1 Hya 179514 11053-2718 FIN 47 AB 1927 2009 69 48 0.2 5.70 5.70 0.00 Y <===
Show 179514 11053-2718 LDS6238 AC 1960 1960 1 46 18.0 4.96 6.10 1.14
Show 179514 11053-2718 TOB 374 AD 1978 2015 9 88 507.3 4.96 5.70 0.74
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
Chi1 Hya
Constellation
Hydra
SAO
179514
HIP
54204
Tycho2
6644-01331-1
HD
96202
HR
4314
GC
15248
GL
NN 3642A
CD
CD-26 8338
CP
CP-26 4439
Bayer
Chi 1 Hydrae
Bayer name
Chi1 Hya
Distance
43.23
Distance ly
141.02
last precise pa
48.3
last precise sep
0.139
 
 
ORBITAL ELEMENTS
 
 
Period (P)7.603y Periastron (T)1983.46y Semi-major axis (a)0.137a
Eccentricity (e)0.353 Inclination (i)95° Longitude of periastron (ω)342.9°
Node (Ω)224.7° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.013 164.7
2001 0.095 51.9
2002 0.161 47.4
2003 0.182 45.1
2004 0.151 42.6
2005 0.061 35.4
2006 0.065 229.7
2007 0.067 218.5
2008 0.038 63.7
2009 0.126 49.5
2010 0.175 46.4
2011 0.177 44.2
2012 0.123 41.0
2013 0.014 0.7
2014 0.089 225.0
2015 0.030 204.8
2016 0.077 53.9
2017 0.151 48.0
2018 0.182 45.5
2019 0.162 43.2
2020 0.085 38.3
2021 0.042 235.0
2022 0.081 221.3
2023 0.019 85.3
2024 0.111 50.6
2025 0.169 46.9
2026 0.181 44.6
2027 0.139 41.9
2028 0.038 29.6
2029 0.080 227.1
2030 0.050 214.5

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic