08464-1333 RST 5507 (12 Hya)

 
 
08h 46m 22.53s -13 32' 51.7" P.A. 266.00 sep 26.8 mag 4.32,13.70 Sp G8IIIb dist. 75.13 pc (245.07 l.y.)
 
 
Coord 2000 08464-1333 Discov num RST5507 Comp Coord arcsec 2000 08 46 22.53 -13 32 51.7
Date first 1951 Date last 2016 Obs 5
Pa first 266 Pa last 265.6 P.A. Now (θ) 265.6°
Sep first 22.2 Sep last 26.8 Sep. Now (ρ) 26.8"
Mag pri 4.32 Mag sec 13.70 delta mag (ΔM) 9.38 Spectral class G8IIIb (yellow)
Pri motion ra +010 Sec motion ra -002
Pri motion dec -015 Sec motion dec +001
Notes N S (See Notes, Parallax indidates non-physical)
rPM=1.109
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 12 Hya Constellation Hydra SAO 154622 HIP 43067
Tycho2 5454-01870-1 Gaia DR2 5735066776627839872 HD 74918 HR 3484
GC 12097 BD BD-13 2673 Flamsteed 12 Hydrae Flamsteed name 12 Hya
Distance 75.13 Distance ly 245.07
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier08464-1333 RST5507 A
coord_arcsec_2000084622.53-133251.7
Period (P)1592d (4.36y)± 806 Periastron (T)49194d (1993.564y)± 664 Semi-major axis (a)11.6m± 5.7
Eccentricity (e)0.4± 0.26 Inclination (i)58°± 10 Longitude of periastron (ω)103°± 34
Node (Ω)91°± 16 Notes ReferenceGln2007
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 17.7 0.009
2001-01-01 67.7 0.012
2002-01-01 122.2 0.006
2003-01-01 287.4 0.010
2004-01-01 351.3 0.008
2005-01-01 53.3 0.011
2006-01-01 93.1 0.010
2007-01-01 265.3 0.008
2008-01-01 325.0 0.009
2009-01-01 35.5 0.010
2010-01-01 78.1 0.012
2011-01-01 204.9 0.004
2012-01-01 302.8 0.010
2013-01-01 12.4 0.009
2014-01-01 64.8 0.012
2015-01-01 112.8 0.007
2016-01-01 283.2 0.010
2017-01-01 345.5 0.008
2018-01-01 49.9 0.011
2019-01-01 89.5 0.011
2020-01-01 258.7 0.007
2021-01-01 320.0 0.009
2022-01-01 31.0 0.009
2023-01-01 75.3 0.012
2024-01-01 175.9 0.004
2025-01-01 298.6 0.010
2026-01-01 6.8 0.009
2027-01-01 61.9 0.012
2028-01-01 105.9 0.008
2029-01-01 278.9 0.010
2030-01-01 339.8 0.009


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



 
 


wds08464-1333r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic