09457-3902 HDS1409

 
 
09h 45m 40.09s -39 02' 26.4" P.A. 46 sep 0.57 mag 12.64,13.18 dist. 20.21 pc (65.93 l.y.)
 
 
Coord 2000
09457-3902
Discov num
HDS1409
Comp
Coord arcsec 2000
09 45 40.09 -39 02 26.4
Date first
1991
Date last
2016
Obs
4
Pa first
29
Pa last
52
P.A. Now (θ)
46°
Sep first
0.5
Sep last
0.5
Sep. Now (ρ)
0.57"
Mag pri
12.64
Mag sec
13.18
delta mag (ΔM)
0.54
Spectral class
Pri motion ra
-126
Sec motion ra
Pri motion dec
-236
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
52.2
Precise sep
0.527
Constellation
Antlia
HIP
47890
Distance
20.21
Distance ly
65.93
last precise pa
52.2
last precise sep
0.527
 
 
ORBITAL ELEMENTS
 
 
Period (P)33.98y Periastron (T)1997.383y Semi-major axis (a)0.497a
Eccentricity (e)0.479 Inclination (i)112.4° Longitude of periastron (ω)121°
Node (Ω)29.1° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.328 203.3
2001 0.337 195.5
2002 0.326 187.5
2003 0.306 178.8
2004 0.283 168.7
2005 0.262 156.9
2006 0.248 143.3
2007 0.244 128.7
2008 0.252 114.3
2009 0.270 101.3
2010 0.297 90.4
2011 0.330 81.5
2012 0.365 74.2
2013 0.400 68.2
2014 0.436 63.2
2015 0.469 58.9
2016 0.500 55.1
2017 0.527 51.8
2018 0.550 48.8
2019 0.568 46.0
2020 0.580 43.4
2021 0.585 40.8
2022 0.583 38.2
2023 0.572 35.6
2024 0.550 32.8
2025 0.517 29.8
2026 0.469 26.2
2027 0.405 21.6
2028 0.323 14.9
2029 0.222 2.8
2030 0.123 329.9

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

grafico orbita





wds09457-3902a.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
09457-3902 HDS1409 1991 1 29 0.5 12.64 13.18 094540.18-390224.6
09457-3902 HDS1409 2014 2 62 0.4 12.64 13.18 094540.18-390224.6
09457-3902 HDS1409 2015 3 56 0.5 12.64 13.18 094540.18-390224.6
09457-3902 HDS1409 2016 4 52 0.5 12.64 13.18 094540.09-390226.4

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