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) |
134.2° |
|
| Sep first |
0.3 |
|
Sep last |
0.092 |
|
Sep. Now (ρ) |
0.161" |
|
| 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) |
|
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 |
|
42932 |
09 35 24 +39 57 26 |
STF 1369 BC |
2017 |
35 |
324 |
141.6 |
7.98 |
8.42 |
0.44 |
|
|
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 |
| 2031 |
115.1 |
0.248 |
| 2032 |
113.1 |
0.260 |
| 2033 |
111.3 |
0.272 |
| 2034 |
109.7 |
0.283 |
| 2035 |
108.2 |
0.294 |
| 2036 |
106.7 |
0.303 |
| 2037 |
105.4 |
0.312 |
| 2038 |
104.1 |
0.319 |
| 2039 |
102.9 |
0.326 |
| 2040 |
101.7 |
0.332 |
| 2041 |
100.5 |
0.337 |
| 2042 |
99.4 |
0.340 |
| 2043 |
98.3 |
0.343 |
| 2044 |
97.3 |
0.344 |
| 2045 |
96.2 |
0.344 |
| 2046 |
95.1 |
0.343 |
| 2047 |
94.0 |
0.340 |
| 2048 |
92.9 |
0.336 |
| 2049 |
91.7 |
0.331 |
| 2050 |
90.6 |
0.323 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
