09354+3958 COU 2084 Aa,Ab
09h 35m 22.50s +39° 57' 47.7" P.A. 190.00 sep 0.1 mag 6.98,8.79 Sp F2V dist. 85.18 pc (277.86 l.y.)
Coord 2000 |
09354+3958 |
|
Discov num |
COU2084 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
09 35 22.50 +39 57 47.7 |
|
Date first |
1982 |
|
Date last |
2019 |
|
Obs |
17 |
|
Pa first |
113 |
|
Pa last |
190.2 |
|
P.A. Now (θ) |
146.3° |
|
Sep first |
0.3 |
|
Sep last |
0.092 |
|
Sep. Now (ρ) |
0.131" |
|
Mag pri |
6.98 |
|
Mag sec |
8.79 |
|
delta mag (ΔM) |
1.81 |
|
Spectral class |
F2V (yellow-white) |
|
Pri motion ra |
-004 |
|
Sec motion ra |
-004 |
|
Pri motion dec |
+015 |
|
Sec motion dec |
+015 |
|
Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
09354+3958 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
42931 |
09 35 22 +39 57 48 |
COU 2084 Aa,Ab |
2019 |
17 |
190 |
0.1 |
6.98 |
8.79 |
1.81 |
Y |
<=== |
Show |
DI Lyn |
42931 |
09 35 22 +39 57 48 |
STF 1369 AB |
2019 |
60 |
150 |
25.1 |
6.98 |
7.98 |
1.00 |
|
|
Show |
|
42931 |
09 35 22 +39 57 48 |
STF 1369 AC |
2017 |
43 |
323 |
116.3 |
6.98 |
8.42 |
1.44 |
|
|
Show |
|
42930 |
09 35 24 +39 57 26 |
STF 1369 BC |
2017 |
35 |
324 |
141.6 |
7.98 |
8.42 |
0.44 |
|
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Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
DI Lyn |
|
Constellation |
Lynx |
|
SAO |
42931 |
|
HIP |
47053 |
|
Tycho2 |
2992-01686-1 |
|
Gaia DR2 |
813111839701758080 |
|
HD |
82780 |
|
HR |
3811 |
|
ADS |
7438 |
|
BD |
BD+40 2226 |
|
Distance |
85.18 |
|
Distance ly |
277.86 |
|
ORBITAL ELEMENTS
Period (P) | 50.34y | ± 1.91 |
Periastron (T) | 2012.39y | ± 0.82 |
Semi-major axis (a) | 0.246a | ± 0.012 |
Eccentricity (e) | 0.652 | ± 0.036 |
Inclination (i) | 112.9° | ± 3.4 |
Longitude of periastron (ω) | 137° | ± 6.9 |
Node (Ω) | 84.7° | ± 1.7 |
Notes | n | |
Reference | Tok2019e | |
Equinox | 2000 | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
90.1 |
0.320 |
2001 |
88.8 |
0.310 |
2002 |
87.5 |
0.298 |
2003 |
85.9 |
0.283 |
2004 |
84.3 |
0.266 |
2005 |
82.3 |
0.245 |
2006 |
80.0 |
0.222 |
2007 |
77.0 |
0.194 |
2008 |
72.9 |
0.161 |
2009 |
66.6 |
0.123 |
2010 |
53.8 |
0.081 |
2011 |
14.1 |
0.042 |
2012 |
299.0 |
0.052 |
2013 |
271.3 |
0.086 |
2014 |
257.4 |
0.103 |
2015 |
245.8 |
0.105 |
2016 |
233.9 |
0.101 |
2017 |
220.8 |
0.096 |
2018 |
206.3 |
0.093 |
2019 |
191.4 |
0.093 |
2020 |
177.2 |
0.098 |
2021 |
164.9 |
0.106 |
2022 |
154.6 |
0.118 |
2023 |
146.3 |
0.131 |
2024 |
139.6 |
0.146 |
2025 |
134.2 |
0.161 |
2026 |
129.7 |
0.176 |
2027 |
125.9 |
0.191 |
2028 |
122.6 |
0.206 |
2029 |
119.8 |
0.220 |
2030 |
117.3 |
0.234 |
|
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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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