06018-7158 HEI 676 (HD 42081)
06h 01m 50.34s -71° 57' 35.3" P.A. 198.00 sep 0.4 mag 10.39,11.03 Sp K2/3IV dist. 66.53 pc (217.02 l.y.)
| Coord 2000 |
06018-7158 |
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Discov num |
HEI 676 |
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Comp |
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Coord arcsec 2000 |
06 01 50.34 -71 57 35.3 |
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| Date first |
1990 |
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Date last |
2018 |
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Obs |
6 |
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| Pa first |
96 |
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Pa last |
198.1 |
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P.A. Now (θ) |
198.1° |
|
| Sep first |
0.3 |
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Sep last |
0.354 |
|
Sep. Now (ρ) |
0.354" |
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| Mag pri |
10.39 |
|
Mag sec |
11.03 |
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delta mag (ΔM) |
0.64 |
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Spectral class |
K2/3IV (yellow-orange) |
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| Pri motion ra |
+075 |
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Sec motion ra |
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| Pri motion dec |
+110 |
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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 42081 |
|
Constellation |
Mensa |
|
HIP |
28573 |
|
Tycho2 |
9172-00204-1 |
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| Gaia DR2 |
5278244125066452608 |
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HD |
42081 |
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CP |
CP-71 412 |
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Distance |
66.53 |
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| Distance ly |
217.02 |
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ORBITAL ELEMENTS
| Period (P) | 102y | ± 12.5 |
Periastron (T) | 2006.39y | ± 0.18 |
Semi-major axis (a) | 0.3988a | ± 0.0237 |
| Eccentricity (e) | 0.657 | ± 0.035 |
Inclination (i) | 169° | |
Longitude of periastron (ω) | 340° | |
| Node (Ω) | 301.9° | ± 1.2 |
Notes | | |
Reference | Tok2016e | |
| Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
56.7 |
0.235 |
| 2001 |
48.5 |
0.214 |
| 2002 |
38.4 |
0.193 |
| 2003 |
25.9 |
0.173 |
| 2004 |
10.4 |
0.156 |
| 2005 |
351.7 |
0.143 |
| 2006 |
330.2 |
0.137 |
| 2007 |
308.1 |
0.138 |
| 2008 |
287.5 |
0.147 |
| 2009 |
269.9 |
0.161 |
| 2010 |
255.4 |
0.179 |
| 2011 |
243.6 |
0.198 |
| 2012 |
234.1 |
0.219 |
| 2013 |
226.1 |
0.239 |
| 2014 |
219.4 |
0.260 |
| 2015 |
213.7 |
0.280 |
| 2016 |
208.8 |
0.300 |
| 2017 |
204.4 |
0.319 |
| 2018 |
200.6 |
0.337 |
| 2019 |
197.1 |
0.355 |
| 2020 |
194.0 |
0.372 |
| 2021 |
191.1 |
0.389 |
| 2022 |
188.4 |
0.405 |
| 2023 |
186.0 |
0.420 |
| 2024 |
183.7 |
0.435 |
| 2025 |
181.6 |
0.449 |
| 2026 |
179.6 |
0.463 |
| 2027 |
177.7 |
0.476 |
| 2028 |
175.9 |
0.488 |
| 2029 |
174.2 |
0.500 |
| 2030 |
172.6 |
0.512 |
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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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