04132+2258 HU 302 (HD 284242)
04h 13m 14.00s +22° 57' 31.7" P.A. 40.00 sep 0.2 mag 9.82,10.05 Sp K0 dist. 440.53 pc (1437.01 l.y.)
| Coord 2000 |
04132+2258 |
|
Discov num |
HU 302 |
|
Comp |
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Coord arcsec 2000 |
04 13 14.00 +22 57 31.7 |
|
| Date first |
1901 |
|
Date last |
2011 |
|
Obs |
22 |
|
| Pa first |
344 |
|
Pa last |
39.5 |
|
P.A. Now (θ) |
39.5° |
|
| Sep first |
0.3 |
|
Sep last |
0.22 |
|
Sep. Now (ρ) |
0.22" |
|
| Mag pri |
9.82 |
|
Mag sec |
10.05 |
|
delta mag (ΔM) |
0.23 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+006 |
|
Sec motion ra |
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|
| Pri motion dec |
-016 |
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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 284242 |
|
Constellation |
Taurus |
|
SAO |
76507 |
|
HIP |
19702 |
|
| Tycho2 |
1815-01065-1 |
|
Gaia DR2 |
52890602402091008 |
|
HD |
284242 |
|
ADS |
3058 |
|
| BD |
BD+22 651 |
|
Distance |
440.53 |
|
Distance ly |
1437.01 |
|
ORBITAL ELEMENTS
| Period (P) | 237.2y | |
Periastron (T) | 1883.11y | |
Semi-major axis (a) | 0.748a | |
| Eccentricity (e) | 0.96 | |
Inclination (i) | 80.6° | |
Longitude of periastron (ω) | 89.6° | |
| Node (Ω) | 141° | |
Notes | n | |
Reference | Doc2010e | |
| Equinox | 2000 | |
Last observation | 2007 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
47.4 |
0.240 |
| 2001 |
48.1 |
0.240 |
| 2002 |
48.7 |
0.240 |
| 2003 |
49.4 |
0.240 |
| 2004 |
50.1 |
0.239 |
| 2005 |
50.8 |
0.239 |
| 2006 |
51.5 |
0.239 |
| 2007 |
52.1 |
0.239 |
| 2008 |
52.8 |
0.239 |
| 2009 |
53.5 |
0.239 |
| 2010 |
54.2 |
0.239 |
| 2011 |
54.9 |
0.239 |
| 2012 |
55.5 |
0.239 |
| 2013 |
56.2 |
0.239 |
| 2014 |
56.9 |
0.239 |
| 2015 |
57.6 |
0.239 |
| 2016 |
58.3 |
0.239 |
| 2017 |
58.9 |
0.239 |
| 2018 |
59.6 |
0.239 |
| 2019 |
60.3 |
0.239 |
| 2020 |
61.0 |
0.239 |
| 2021 |
61.6 |
0.239 |
| 2022 |
62.3 |
0.240 |
| 2023 |
63.0 |
0.240 |
| 2024 |
63.7 |
0.240 |
| 2025 |
64.3 |
0.240 |
| 2026 |
65.0 |
0.240 |
| 2027 |
65.7 |
0.240 |
| 2028 |
66.4 |
0.240 |
| 2029 |
67.0 |
0.240 |
| 2030 |
67.7 |
0.241 |
|
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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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