08403+1921 CHR 130 (HD 73712)
08h 40m 20.17s +19° 20' 56.5" P.A. 160.00 sep 0.1 mag 6.78,8.50 Sp A9V dist. 139.86 pc (456.22 l.y.)
| Coord 2000 |
08403+1921 |
|
Discov num |
CHR 130 |
|
Comp |
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Coord arcsec 2000 |
08 40 20.17 +19 20 56.5 |
|
| Date first |
1984 |
|
Date last |
2021 |
|
Obs |
23 |
|
| Pa first |
340 |
|
Pa last |
159.5 |
|
P.A. Now (θ) |
159.4° |
|
| Sep first |
0.1 |
|
Sep last |
0.13 |
|
Sep. Now (ρ) |
0.087" |
|
| Mag pri |
6.78 |
|
Mag sec |
8.50 |
|
delta mag (ΔM) |
1.72 |
|
Spectral class |
A9V (white) |
|
| Pri motion ra |
-034 |
|
Sec motion ra |
|
|
| Pri motion dec |
-015 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 73712 |
|
Constellation |
Cancer |
|
SAO |
98019 |
|
HIP |
42542 |
|
| Tycho2 |
1395-02024-1 |
|
Gaia DR2 |
661217916098904448 |
|
HD |
73712 |
|
GC |
11898 |
|
| BD |
BD+19 2069 |
|
Distance |
139.86 |
|
Distance ly |
456.22 |
|
ORBITAL ELEMENTS
| Period (P) | 35.45y | ± 0.22 |
Periastron (T) | 1987.86y | ± 0.53 |
Semi-major axis (a) | 0.1402a | ± 0.0021 |
| Eccentricity (e) | 0.169 | ± 0.013 |
Inclination (i) | 90.4° | ± 0.6 |
Longitude of periastron (ω) | 226.3° | ± 5.8 |
| Node (Ω) | 339.8° | ± 0.6 |
Notes | n | |
Reference | Tok2017b | |
| Equinox | 2000 | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
339.8 |
0.155 |
| 2001 |
339.7 |
0.155 |
| 2002 |
339.7 |
0.151 |
| 2003 |
339.6 |
0.144 |
| 2004 |
339.5 |
0.134 |
| 2005 |
339.4 |
0.122 |
| 2006 |
339.3 |
0.107 |
| 2007 |
339.2 |
0.090 |
| 2008 |
339.0 |
0.071 |
| 2009 |
338.6 |
0.051 |
| 2010 |
337.7 |
0.029 |
| 2011 |
331.4 |
0.007 |
| 2012 |
163.9 |
0.015 |
| 2013 |
161.4 |
0.036 |
| 2014 |
160.7 |
0.057 |
| 2015 |
160.4 |
0.076 |
| 2016 |
160.2 |
0.093 |
| 2017 |
160.1 |
0.107 |
| 2018 |
160.0 |
0.117 |
| 2019 |
159.9 |
0.122 |
| 2020 |
159.8 |
0.122 |
| 2021 |
159.7 |
0.116 |
| 2022 |
159.6 |
0.104 |
| 2023 |
159.4 |
0.087 |
| 2024 |
159.2 |
0.065 |
| 2025 |
158.7 |
0.039 |
| 2026 |
155.7 |
0.012 |
| 2027 |
342.7 |
0.017 |
| 2028 |
340.9 |
0.044 |
| 2029 |
340.4 |
0.070 |
| 2030 |
340.2 |
0.093 |
|
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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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