04298+1741 COU 567 (HD 28436)
04h 29m 48.12s +17° 40' 39.4" P.A. 148.00 sep 0.1 mag 9.37,8.09 Sp B7V dist. 267.38 pc (872.19 l.y.)
| Coord 2000 |
04298+1741 |
|
Discov num |
COU 567 |
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Comp |
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Coord arcsec 2000 |
04 29 48.12 +17 40 39.4 |
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| Date first |
1971 |
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Date last |
2013 |
|
Obs |
21 |
|
| Pa first |
29 |
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Pa last |
148.4 |
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P.A. Now (θ) |
148.4° |
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| Sep first |
0.2 |
|
Sep last |
0.114 |
|
Sep. Now (ρ) |
0.114" |
|
| Mag pri |
9.37 |
|
Mag sec |
8.09 |
|
delta mag (ΔM) |
1.28 |
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Spectral class |
B7V (blue-white) |
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| Pri motion ra |
+005 |
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Sec motion ra |
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| Pri motion dec |
-007 |
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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 28436 |
|
Constellation |
Taurus |
|
SAO |
93967 |
|
HIP |
20971 |
|
| Tycho2 |
1269-01049-1 |
|
Gaia DR2 |
3314193509456061824 |
|
HD |
28436 |
|
BD |
BD+17 735 |
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| Distance |
267.38 |
|
Distance ly |
872.19 |
|
ORBITAL ELEMENTS
| Period (P) | 135.4y | ± 19.3 |
Periastron (T) | 2002y | ± 0.1 |
Semi-major axis (a) | 0.187a | ± 0.016 |
| Eccentricity (e) | 0.84 | ± 0.019 |
Inclination (i) | 109.8° | ± 0.5 |
Longitude of periastron (ω) | 108.7° | ± 2.5 |
| Node (Ω) | 5.3° | ± 1.1 |
Notes | | |
Reference | BAE2021 | |
| Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
354.7 |
0.043 |
| 2001 |
336.0 |
0.021 |
| 2002 |
230.3 |
0.014 |
| 2003 |
192.9 |
0.034 |
| 2004 |
182.4 |
0.047 |
| 2005 |
176.1 |
0.056 |
| 2006 |
171.1 |
0.061 |
| 2007 |
166.9 |
0.065 |
| 2008 |
163.0 |
0.068 |
| 2009 |
159.4 |
0.070 |
| 2010 |
156.0 |
0.071 |
| 2011 |
152.7 |
0.072 |
| 2012 |
149.5 |
0.073 |
| 2013 |
146.3 |
0.074 |
| 2014 |
143.2 |
0.075 |
| 2015 |
140.1 |
0.075 |
| 2016 |
137.1 |
0.076 |
| 2017 |
134.2 |
0.076 |
| 2018 |
131.2 |
0.077 |
| 2019 |
128.4 |
0.077 |
| 2020 |
125.5 |
0.078 |
| 2021 |
122.7 |
0.079 |
| 2022 |
120.0 |
0.079 |
| 2023 |
117.3 |
0.080 |
| 2024 |
114.7 |
0.081 |
| 2025 |
112.1 |
0.082 |
| 2026 |
109.6 |
0.083 |
| 2027 |
107.2 |
0.084 |
| 2028 |
104.8 |
0.085 |
| 2029 |
102.5 |
0.087 |
| 2030 |
100.3 |
0.088 |
|
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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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