09510-8004 HDS1421

 
 
09h 51m 00.80s -80 03' 39.9" P.A. 326.3 sep 0.09 mag 6.68,8.61 Sp B8IV dist. 256.41 pc (836.41 l.y.)
 
 
Coord 2000
09510-8004
Discov num
HDS1421
Comp
Coord arcsec 2000
09 51 00.80 -80 03 39.9
Date first
1991
Date last
2016
Obs
10
Pa first
119
Pa last
317
P.A. Now (θ)
326.3°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.09"
Mag pri
6.68
Mag sec
8.61
delta mag (ΔM)
1.93
Spectral class
B8IV (blue-white)
Pri motion ra
-003
Sec motion ra
Pri motion dec
+015
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
316.9
Precise sep
0.083
Constellation
Chamaeleon
SAO
256666
HIP
48320
Tycho2
9404-01549-1
HD
86320
CP
CP-79 457
Distance
256.41
Distance ly
836.41
last precise pa
316.9
last precise sep
0.083
 
 
ORBITAL ELEMENTS
 
 
Period (P)63.52y± 5.68 Periastron (T)2015.24y± 0.37 Semi-major axis (a)0.1583a± 0.0057
Eccentricity (e)0.5 Inclination (i)34.5°± 7 Longitude of periastron (ω)135.2°± 20.9
Node (Ω)142.3°± 15.8 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.189 140.0
2001 0.183 142.9
2002 0.176 146.1
2003 0.168 149.5
2004 0.160 153.2
2005 0.151 157.4
2006 0.142 162.2
2007 0.131 167.6
2008 0.120 174.0
2009 0.109 181.7
2010 0.098 191.2
2011 0.087 203.2
2012 0.078 218.4
2013 0.071 236.9
2014 0.069 257.6
2015 0.072 278.3
2016 0.077 296.9
2017 0.083 312.8
2018 0.090 326.3
2019 0.096 338.2
2020 0.101 348.6
2021 0.106 358.1
2022 0.112 6.6
2023 0.117 14.4
2024 0.122 21.5
2025 0.127 28.1
2026 0.132 34.1
2027 0.137 39.7
2028 0.143 44.9
2029 0.148 49.7
2030 0.153 54.2

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

grafico orbita





wds09510-8004a.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
09510-8004 HDS1421 1991 1 119 0.2 6.68 8.61 B8IV 095100.80-800339.9
09510-8004 HDS1421 2015 5 296 0.1 6.68 8.61 B8IV 095100.80-800339.9
09510-8004 HDS1421 2016 10 317 0.1 6.68 8.61 B8IV O 095100.80-800339.9

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