00098-3347 SEE   3

 
 
00h 09m 50.08s -33 47' 20.6" P.A. 123.30 sep 0.9 mag 9.56,9.74 Sp K1V dist. 55.31 pc (180.42 l.y.)
 
 
Coord 2000
00098-3347
Discov num
SEE   3
Comp
Coord arcsec 2000
00 09 50.08 -33 47 20.6
Date first
1896
Date last
2017
Obs
19
Pa first
189
Pa last
124
P.A. Now (θ)
123.3°
Sep first
1.1
Sep last
0.9
Sep. Now (ρ)
0.94"
Mag pri
9.56
Mag sec
9.74
delta mag (ΔM)
0.18
Spectral class
K1V (yellow-orange)
Pri motion ra
-062
Sec motion ra
-062
Pri motion dec
-150
Sec motion dec
-150
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
123.6
Precise sep
0.907
Constellation
Hydra
HIP
794
Tycho2
6992-00798-1
Gaia DR2
2310276759788776832
HD
546
CD
CD-34 29
CP
CP-34 10
Distance
55.31
Distance ly
180.42
last precise pa
123.6
last precise sep
0.907
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)406y Periastron (T)1978.45y Semi-major axis (a)1.119a
Eccentricity (e)0.85 Inclination (i)41.7° Longitude of periastron (ω)77.6°
Node (Ω)267.7° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000 0.643 108.6
2001 0.661 109.6
2002 0.678 110.6
2003 0.695 111.5
2004 0.711 112.4
2005 0.727 113.2
2006 0.742 114.0
2007 0.757 114.8
2008 0.772 115.6
2009 0.786 116.3
2010 0.801 117.0
2011 0.814 117.6
2012 0.828 118.3
2013 0.841 118.9
2014 0.854 119.5
2015 0.867 120.1
2016 0.880 120.7
2017 0.892 121.2
2018 0.904 121.8
2019 0.916 122.3
2020 0.928 122.8
2021 0.939 123.3
2022 0.950 123.8
2023 0.962 124.3
2024 0.972 124.8
2025 0.983 125.2
2026 0.994 125.7
2027 1.004 126.1
2028 1.014 126.5
2029 1.024 126.9
2030 1.034 127.4


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



 
 


wds00098-3347a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)169.2247y± 30.0879 Periastron (T)1977.8119y± 1.7498 Semi-major axis (a)0.75593a± 0.06671
Eccentricity (e)0.58787± 0.07143 Inclination (i)32.411°± 11.547 Longitude of periastron (ω)277.855°± 19.411
Node (Ω)68.556°± 21.083 Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation2010
label rho theta
2000 0.648 99.8
2001 0.661 101.7
2002 0.674 103.6
2003 0.686 105.4
2004 0.698 107.1
2005 0.710 108.8
2006 0.722 110.4
2007 0.733 112.0
2008 0.743 113.5
2009 0.754 115.0
2010 0.764 116.4
2011 0.774 117.8
2012 0.783 119.2
2013 0.793 120.5
2014 0.802 121.9
2015 0.810 123.1
2016 0.819 124.4
2017 0.827 125.6
2018 0.835 126.8
2019 0.843 128.0
2020 0.851 129.1
2021 0.858 130.3
2022 0.866 131.4
2023 0.873 132.5
2024 0.880 133.6
2025 0.886 134.6
2026 0.893 135.7
2027 0.899 136.7
2028 0.905 137.7
2029 0.911 138.8
2030 0.917 139.7


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



 
 


wds00098-3347b.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
00098-3347 SEE 3 1991 13 80 0.4 9.56 9.74 K1V NOD 000950.08-334720.6
00098-3347 SEE 3 2008 16 116 0.8 9.56 9.74 K1V NOD 000950.08-334720.6
00098-3347 SEE 3 2010 17 118 0.8 9.56 9.74 K1V NOD 000950.08-334720.6
00098-3347 SEE 3 2017 18 124 0.9 9.56 9.74 K1V O 000950.08-334720.6

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