09510-8004 HDS 1421 (HD 86320)
09h 51m 00.80s -80° 03' 39.9" P.A. 344.00 sep 0.1 mag 6.68,8.61 Sp B8IV dist. 256.41 pc (836.41 l.y.)
| Coord 2000 |
09510-8004 |
|
Discov num |
HDS1421 |
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Comp |
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Coord arcsec 2000 |
09 51 00.80 -80 03 39.9 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
18 |
|
| Pa first |
119 |
|
Pa last |
344.3 |
|
P.A. Now (θ) |
344.3° |
|
| Sep first |
0.2 |
|
Sep last |
0.111 |
|
Sep. Now (ρ) |
0.111" |
|
| 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 |
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|
| Pri motion dec |
+015 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 86320 |
|
Constellation |
Chamaeleon |
|
SAO |
256666 |
|
HIP |
48320 |
|
| Tycho2 |
9404-01549-1 |
|
Gaia DR2 |
5201784945460884224 |
|
HD |
86320 |
|
GC |
13624 |
|
| CP |
CP-79 457 |
|
Distance |
256.41 |
|
Distance ly |
836.41 |
|
ORBITAL ELEMENTS
| Period (P) | 107.3y | ± 22.3 |
Periastron (T) | 2013.84y | ± 0.33 |
Semi-major axis (a) | 0.186a | ± 0.018 |
| Eccentricity (e) | 0.614 | ± 0.054 |
Inclination (i) | 31.1° | ± 6.5 |
Longitude of periastron (ω) | 125.3° | ± 5.6 |
| Node (Ω) | 132.7° | ± 7.2 |
Notes | | |
Reference | Tok2021c | |
| Equinox | 2000 | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
136.7 |
0.168 |
| 2001 |
139.6 |
0.161 |
| 2002 |
142.8 |
0.153 |
| 2003 |
146.4 |
0.144 |
| 2004 |
150.4 |
0.135 |
| 2005 |
155.0 |
0.126 |
| 2006 |
160.4 |
0.116 |
| 2007 |
166.7 |
0.106 |
| 2008 |
174.4 |
0.096 |
| 2009 |
183.7 |
0.087 |
| 2010 |
195.4 |
0.078 |
| 2011 |
209.9 |
0.070 |
| 2012 |
227.2 |
0.065 |
| 2013 |
246.3 |
0.064 |
| 2014 |
265.2 |
0.066 |
| 2015 |
282.3 |
0.070 |
| 2016 |
296.9 |
0.077 |
| 2017 |
309.2 |
0.083 |
| 2018 |
319.6 |
0.090 |
| 2019 |
328.6 |
0.097 |
| 2020 |
336.4 |
0.104 |
| 2021 |
343.3 |
0.110 |
| 2022 |
349.4 |
0.116 |
| 2023 |
355.0 |
0.122 |
| 2024 |
360.0 |
0.128 |
| 2025 |
4.5 |
0.134 |
| 2026 |
8.7 |
0.139 |
| 2027 |
12.6 |
0.145 |
| 2028 |
16.2 |
0.150 |
| 2029 |
19.6 |
0.156 |
| 2030 |
22.7 |
0.161 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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