06098-2246 RST 3442 (HD 42443)
06h 09m 47.91s -22° 46' 28.2" P.A. 324.00 sep 0.2 mag 6.56,6.57 Sp F6V dist. 49.04 pc (159.97 l.y.)
| Coord 2000 |
06098-2246 |
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Discov num |
RST3442 |
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Comp |
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Coord arcsec 2000 |
06 09 47.91 -22 46 28.2 |
|
| Date first |
1936 |
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Date last |
2020 |
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Obs |
70 |
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| Pa first |
57 |
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Pa last |
324.2 |
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P.A. Now (θ) |
4.7° |
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| Sep first |
0.2 |
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Sep last |
0.176 |
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Sep. Now (ρ) |
0.185" |
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| Mag pri |
6.56 |
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Mag sec |
6.57 |
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delta mag (ΔM) |
0.01 |
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Spectral class |
F6V (yellow-white) |
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| Pri motion ra |
+091 |
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Sec motion ra |
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| Pri motion dec |
+061 |
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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 42443 |
|
Constellation |
Lepus |
|
SAO |
171317 |
|
HIP |
29234 |
|
| Tycho2 |
6505-02272-1 |
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Gaia DR2 |
2913765672571405440 |
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HD |
42443 |
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HR |
2186 |
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| GC |
7849 |
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BD |
BD-22 1330 |
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CD |
CD-22 2806 |
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CP |
CP-22 1083 |
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| Distance |
49.04 |
|
Distance ly |
159.97 |
|
ORBITAL ELEMENTS
| Period (P) | 18.213y | ± 0.034 |
Periastron (T) | 1979.628y | ± 0.037 |
Semi-major axis (a) | 0.2065a | ± 0.0008 |
| Eccentricity (e) | 0.3362 | ± 0.0023 |
Inclination (i) | 45.9° | ± 0.54 |
Longitude of periastron (ω) | 298.78° | ± 0.62 |
| Node (Ω) | 266.62° | ± 0.43 |
Notes | n | |
Reference | Hrt1996a | |
| Equinox | 2000 | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
278.3 |
0.167 |
| 2001 |
297.1 |
0.174 |
| 2002 |
315.3 |
0.174 |
| 2003 |
333.6 |
0.174 |
| 2004 |
351.5 |
0.178 |
| 2005 |
8.1 |
0.188 |
| 2006 |
22.8 |
0.201 |
| 2007 |
35.5 |
0.215 |
| 2008 |
46.8 |
0.228 |
| 2009 |
57.0 |
0.237 |
| 2010 |
66.6 |
0.240 |
| 2011 |
76.4 |
0.234 |
| 2012 |
87.1 |
0.218 |
| 2013 |
100.5 |
0.188 |
| 2014 |
120.4 |
0.146 |
| 2015 |
157.3 |
0.105 |
| 2016 |
212.2 |
0.105 |
| 2017 |
250.4 |
0.139 |
| 2018 |
274.0 |
0.164 |
| 2019 |
293.2 |
0.173 |
| 2020 |
311.4 |
0.174 |
| 2021 |
329.7 |
0.174 |
| 2022 |
347.8 |
0.177 |
| 2023 |
4.7 |
0.185 |
| 2024 |
19.8 |
0.198 |
| 2025 |
33.0 |
0.212 |
| 2026 |
44.5 |
0.226 |
| 2027 |
54.8 |
0.236 |
| 2028 |
64.6 |
0.240 |
| 2029 |
74.3 |
0.236 |
| 2030 |
84.7 |
0.222 |
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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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