08542-0229 A  1754

 
 
08h 54m 10.97s -02 28' 36.9" P.A. 130.5 sep 0.38 mag 9.90,10.00 Sp F8
 
 
Coord 2000
08542-0229
Discov num
A  1754
Comp
Coord arcsec 2000
08 54 10.97 -02 28 36.9
Date first
1908
Date last
2012
Obs
18
Pa first
113
Pa last
128
P.A. Now (θ)
130.5°
Sep first
0.5
Sep last
0.4
Sep. Now (ρ)
0.38"
Mag pri
9.90
Mag sec
10.00
delta mag (ΔM)
0.1
Spectral class
F8 (yellow-white)
Pri motion ra
-015
Sec motion ra
Pri motion dec
-017
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
128
Precise sep
0.374
Constellation
Hydra
Tycho2
4869-00072-1
HD
76119
ADS
7077
last precise pa
128
last precise sep
0.374
 
 
ORBITAL ELEMENTS
 
 
Period (P)452y Periastron (T)1975.1y Semi-major axis (a)0.53a
Eccentricity (e)0.51 Inclination (i)46° Longitude of periastron (ω)292°
Node (Ω)115.8° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.315 111.5
2001 0.320 112.9
2002 0.324 114.2
2003 0.328 115.4
2004 0.332 116.6
2005 0.336 117.8
2006 0.340 119.0
2007 0.343 120.2
2008 0.347 121.3
2009 0.350 122.4
2010 0.354 123.5
2011 0.357 124.5
2012 0.360 125.6
2013 0.363 126.6
2014 0.366 127.6
2015 0.369 128.6
2016 0.372 129.5
2017 0.375 130.5
2018 0.378 131.4
2019 0.380 132.4
2020 0.383 133.3
2021 0.385 134.2
2022 0.387 135.1
2023 0.390 136.0
2024 0.392 136.9
2025 0.394 137.7
2026 0.396 138.6
2027 0.398 139.4
2028 0.400 140.3
2029 0.402 141.1
2030 0.404 141.9

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

grafico orbita





wds08542-0229a.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
08542-0229 A 1754 1996 14 108 0.3 9.90 10.00 F8 O 085410.97-022836.9
08542-0229 A 1754 2009 15 124 0.4 9.90 10.00 F8 O 085410.97-022836.9
08542-0229 A 1754 2010 16 125 0.4 9.90 10.00 F8 O 085410.97-022836.9
08542-0229 A 1754 2011 17 126 0.4 9.90 10.00 F8 O 085410.97-022836.9
08542-0229 A 1754 2012 18 128 0.4 9.90 10.00 F8 O 085410.97-022836.9

If you need more information about this double, apply for a data request form to the WDS.