14587-2739 BU 239 (59 Hya)

 
 
14h 58m 39.26s -27° 39' 26.3" P.A. 16.00 sep 0.5 mag 6.17,6.79 Sp A8III dist. 113.12 pc (369 l.y.)
 
 
Coord 2000 14587-2739 Discov num BU  239 Comp Coord arcsec 2000 14 58 39.26 -27 39 26.3
Date first 1874 Date last 2019 Obs 82
Pa first 304 Pa last 16.2 P.A. Now (θ) 16.2°
Sep first 0.8 Sep last 0.467 Sep. Now (ρ) 0.467"
Mag pri 6.17 Mag sec 6.79 delta mag (ΔM) 0.62 Spectral class A8III (white)
Pri motion ra -044 Sec motion ra -044
Pri motion dec -011 Sec motion dec -011
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 59 Hya Constellation Hydra SAO 183058 HIP 73284
Tycho2 6756-00461-1 HD 132219 HR 5577 GC 20140
ADS 9453 CD CD-2710148 Flamsteed 59 Hydrae Flamsteed name 59 Hya
Distance 113.12 Distance ly 369
 
 
ORBITAL ELEMENTS
 
 
Period (P)429.19y Periastron (T)2217.25y Semi-major axis (a)0.836a
Eccentricity (e)0.337 Inclination (i)66.9° Longitude of periastron (ω)75.5°
Node (Ω)126.6° Notesn ReferenceLin1998a
Equinox2000 Last observation1998 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 1.0 0.519
2001 1.8 0.515
2002 2.7 0.511
2003 3.5 0.507
2004 4.3 0.503
2005 5.2 0.500
2006 6.1 0.496
2007 7.0 0.492
2008 7.9 0.489
2009 8.8 0.485
2010 9.7 0.482
2011 10.6 0.479
2012 11.6 0.475
2013 12.6 0.472
2014 13.5 0.469
2015 14.5 0.466
2016 15.5 0.463
2017 16.5 0.461
2018 17.6 0.458
2019 18.6 0.456
2020 19.7 0.453
2021 20.7 0.451
2022 21.8 0.449
2023 22.9 0.447
2024 24.0 0.445
2025 25.1 0.443
2026 26.2 0.441
2027 27.3 0.439
2028 28.4 0.438
2029 29.5 0.437
2030 30.7 0.436


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



 
 


wds14587-2739a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic