08589+0829 DEL 2
08h 58m 56.32s +08° 28' 26.1" P.A. 69.00 sep 0.4 mag 10.70,12.70 Sp M3.5V
Coord 2000 |
08589+0829 |
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Discov num |
DEL 2 |
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Comp |
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Coord arcsec 2000 |
08 58 56.32 +08 28 26.1 |
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Date first |
1997 |
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Date last |
2021 |
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Obs |
17 |
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Pa first |
90 |
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Pa last |
68.7 |
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P.A. Now (θ) |
323.3° |
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Sep first |
0.6 |
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Sep last |
0.397 |
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Sep. Now (ρ) |
0.098" |
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Mag pri |
10.70 |
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Mag sec |
12.70 |
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delta mag (ΔM) |
2 |
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Spectral class |
M3.5V (red) |
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Pri motion ra |
+371 |
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Sec motion ra |
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Pri motion dec |
-323 |
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Sec motion dec |
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Notes |
N
O
R
(See Notes, Orbital solution, Red magnitudes) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
ORBITAL ELEMENTS
Period (P) | 5.566y | ± 0.024 |
Periastron (T) | 2006.445y | ± 0.039 |
Semi-major axis (a) | 0.398a | ± 0.008 |
Eccentricity (e) | 0.778 | ± 0.019 |
Inclination (i) | 122.2° | ± 3.1 |
Longitude of periastron (ω) | 23.7° | ± 3.2 |
Node (Ω) | 281.8° | ± 1.7 |
Notes | | |
Reference | Tok2015c | |
Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
63.1 |
0.323 |
2001 |
175.8 |
0.072 |
2002 |
103.1 |
0.521 |
2003 |
93.7 |
0.664 |
2004 |
85.9 |
0.643 |
2005 |
75.3 |
0.482 |
2006 |
36.1 |
0.169 |
2007 |
114.0 |
0.325 |
2008 |
98.4 |
0.607 |
2009 |
90.4 |
0.672 |
2010 |
82.0 |
0.590 |
2011 |
66.9 |
0.365 |
2012 |
273.9 |
0.087 |
2013 |
104.9 |
0.485 |
2014 |
94.7 |
0.655 |
2015 |
87.0 |
0.653 |
2016 |
77.1 |
0.511 |
2017 |
48.5 |
0.217 |
2018 |
119.4 |
0.259 |
2019 |
99.7 |
0.585 |
2020 |
91.4 |
0.672 |
2021 |
83.3 |
0.609 |
2022 |
70.0 |
0.404 |
2023 |
323.3 |
0.098 |
2024 |
107.0 |
0.444 |
2025 |
95.8 |
0.644 |
2026 |
88.1 |
0.662 |
2027 |
78.8 |
0.538 |
2028 |
56.3 |
0.265 |
2029 |
129.0 |
0.181 |
2030 |
101.1 |
0.560 |
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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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