04268+1052 PAT 8 (HD 286820)
04h 26m 48.19s +10° 52' 16.0" P.A. 159.00 sep 0.2 mag 7.40,8.00 Sp K5 dist. 41.48 pc (135.31 l.y.)
Coord 2000 |
04268+1052 |
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Discov num |
PAT 8 |
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Comp |
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Coord arcsec 2000 |
04 26 48.19 +10 52 16.0 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
9 |
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Pa first |
78 |
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Pa last |
159.1 |
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P.A. Now (θ) |
170.4° |
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Sep first |
0.2 |
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Sep last |
0.16 |
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Sep. Now (ρ) |
0.157" |
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Mag pri |
7.40 |
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Mag sec |
8.00 |
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delta mag (ΔM) |
0.6 |
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Spectral class |
K5 (yellow-orange) |
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Pri motion ra |
+110 |
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Sec motion ra |
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Pri motion dec |
-010 |
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Sec motion dec |
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Notes |
N
O
K
(See Notes, Orbital solution, K-band or other infrared magnitudes) |
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Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 286820 |
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Constellation |
Taurus |
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HIP |
20751 |
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Tycho2 |
0672-00425-1 |
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Gaia DR2 |
3306007129990778368 |
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HD |
286820 |
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BD |
BD+10 576 |
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Distance |
41.48 |
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Distance ly |
135.31 |
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ORBITAL ELEMENTS
Period (P) | 19.77y | ± 0.27 |
Periastron (T) | 2017.39y | ± 0.11 |
Semi-major axis (a) | 0.201a | ± 0.01 |
Eccentricity (e) | 0.649 | ± 0.04 |
Inclination (i) | 63° | ± 2.2 |
Longitude of periastron (ω) | 273.7° | ± 0.9 |
Node (Ω) | 119.6° | ± 1.5 |
Notes | n | |
Reference | Tok2021c | |
Equinox | 2000 | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
137.9 |
0.152 |
2001 |
148.2 |
0.160 |
2002 |
158.0 |
0.161 |
2003 |
168.0 |
0.158 |
2004 |
178.5 |
0.154 |
2005 |
189.4 |
0.151 |
2006 |
200.7 |
0.149 |
2007 |
212.1 |
0.150 |
2008 |
223.1 |
0.154 |
2009 |
233.5 |
0.159 |
2010 |
243.3 |
0.165 |
2011 |
252.2 |
0.171 |
2012 |
260.6 |
0.177 |
2013 |
268.6 |
0.179 |
2014 |
276.7 |
0.175 |
2015 |
285.6 |
0.161 |
2016 |
297.5 |
0.128 |
2017 |
330.5 |
0.055 |
2018 |
106.5 |
0.080 |
2019 |
128.4 |
0.134 |
2020 |
140.4 |
0.155 |
2021 |
150.5 |
0.161 |
2022 |
160.3 |
0.160 |
2023 |
170.4 |
0.157 |
2024 |
180.9 |
0.153 |
2025 |
192.0 |
0.150 |
2026 |
203.3 |
0.149 |
2027 |
214.7 |
0.151 |
2028 |
225.6 |
0.155 |
2029 |
235.8 |
0.160 |
2030 |
245.4 |
0.167 |
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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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