08364+6718 YR 13
08h 36m 25.45s +67° 17' 42.4" P.A. 240.00 sep 0.3 mag 9.30,12.10 Sp M0.5V dist. 13.78 pc (44.95 l.y.)
Coord 2000 |
08364+6718 |
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Discov num |
YR 13 |
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Comp |
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Coord arcsec 2000 |
08 36 25.45 +67 17 42.4 |
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Date first |
1999 |
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Date last |
2017 |
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Obs |
10 |
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Pa first |
35 |
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Pa last |
239.8 |
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P.A. Now (θ) |
239.8° |
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Sep first |
0.6 |
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Sep last |
0.259 |
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Sep. Now (ρ) |
0.259" |
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Mag pri |
9.30 |
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Mag sec |
12.10 |
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delta mag (ΔM) |
2.8 |
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Spectral class |
M0.5V (red) |
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Pri motion ra |
-108 |
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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
P
(Orbital solution, 100-year proper motion) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Ursa Major |
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HIP |
42220 |
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Tycho2 |
4133-00241-1 |
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GL |
Gl 310 |
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BD |
BD+67 552 |
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Distance |
13.78 |
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Distance ly |
44.95 |
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ORBITAL ELEMENTS
Period (P) | 23.48y | ± 0.14 |
Periastron (T) | 58432.5d (2018.859y) | ± 5.3 |
Semi-major axis (a) | 552.6m | ± 5.6 |
Eccentricity (e) | 0.6976 | ± 0.0074 |
Inclination (i) | 122.06° | ± 0.57 |
Longitude of periastron (ω) | 246.72° | ± 0.37 |
Node (Ω) | 49.62° | ± 0.39 |
Notes | | |
Reference | MnA2019 | |
Equinox | | |
Last observation | 2017 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
30.6 |
0.600 |
2001 |
25.9 |
0.630 |
2002 |
21.5 |
0.646 |
2003 |
17.3 |
0.650 |
2004 |
13.1 |
0.645 |
2005 |
8.7 |
0.633 |
2006 |
4.1 |
0.615 |
2007 |
359.3 |
0.592 |
2008 |
353.9 |
0.565 |
2009 |
348.0 |
0.534 |
2010 |
341.4 |
0.502 |
2011 |
333.8 |
0.469 |
2012 |
325.1 |
0.437 |
2013 |
315.1 |
0.406 |
2014 |
303.5 |
0.379 |
2015 |
290.3 |
0.356 |
2016 |
275.4 |
0.335 |
2017 |
258.3 |
0.308 |
2018 |
235.5 |
0.244 |
2019 |
151.8 |
0.092 |
2020 |
61.9 |
0.272 |
2021 |
46.9 |
0.423 |
2022 |
38.9 |
0.518 |
2023 |
33.0 |
0.579 |
2024 |
28.1 |
0.617 |
2025 |
23.6 |
0.640 |
2026 |
19.3 |
0.649 |
2027 |
15.1 |
0.649 |
2028 |
10.8 |
0.640 |
2029 |
6.4 |
0.625 |
2030 |
1.6 |
0.604 |
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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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