14587-2739 BU  239 (59 Hya)

 
 
14H 58M 39.26S -27 39' 26.3" P.A. 17.6 SEP 0.46 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
2016
Obs
79
Pa first
304
Pa last
14
P.A. Now (θ)
17.6°
Sep first
0.8
Sep last
0.5
Sep. Now (ρ)
0.46"
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
last precise pa
14.1
last precise sep
0.46
 
 
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° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation1998
label rho theta
2000 0.519 1.0
2001 0.515 1.8
2002 0.511 2.7
2003 0.507 3.5
2004 0.503 4.3
2005 0.500 5.2
2006 0.496 6.1
2007 0.492 7.0
2008 0.489 7.9
2009 0.485 8.8
2010 0.482 9.7
2011 0.479 10.6
2012 0.475 11.6
2013 0.472 12.6
2014 0.469 13.5
2015 0.466 14.5
2016 0.463 15.5
2017 0.461 16.5
2018 0.458 17.6
2019 0.456 18.6
2020 0.453 19.7
2021 0.451 20.7
2022 0.449 21.8
2023 0.447 22.9
2024 0.445 24.0
2025 0.443 25.1
2026 0.441 26.2
2027 0.439 27.3
2028 0.438 28.4
2029 0.437 29.5
2030 0.436 30.7

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