08307+4645 YSC 3 Aa,Ab
08h 30m 41.66s +46° 44' 58.5" P.A. 96.00 sep 0.1 mag 8.05,8.51 Sp F5 dist. 100.81 pc (328.84 l.y.)
| Coord 2000 |
08307+4645 |
|
Discov num |
YSC 3 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
08 30 41.66 +46 44 58.5 |
|
| Date first |
2004 |
|
Date last |
2019 |
|
Obs |
12 |
|
| Pa first |
128 |
|
Pa last |
95.5 |
|
P.A. Now (θ) |
120.8° |
|
| Sep first |
0.1 |
|
Sep last |
0.065 |
|
Sep. Now (ρ) |
0.087" |
|
| Mag pri |
8.05 |
|
Mag sec |
8.51 |
|
delta mag (ΔM) |
0.46 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
-027 |
|
Sec motion ra |
|
|
| Pri motion dec |
+018 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
08307+4645 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
42400 |
08 30 42 +46 44 58 |
YSC 3 Aa,Ab |
2019 |
12 |
96 |
0.1 |
8.05 |
8.51 |
0.46 |
Y |
<=== |
| Show |
HD 71705 |
42400 |
08 30 42 +46 44 58 |
COU 2684 AB |
2019 |
18 |
338 |
1.2 |
7.53 |
10.66 |
3.13 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lynx |
|
SAO |
42400 |
|
HIP |
41739 |
|
Tycho2 |
3416-01286-1 |
|
| Gaia DR2 |
918553046299746816 |
|
HD |
71705 |
|
BD |
BD+47 1583 |
|
Distance |
100.81 |
|
| Distance ly |
328.84 |
|
ORBITAL ELEMENTS
| Period (P) | 19.32y | ± 0.34 |
Periastron (T) | 2002.35y | ± 0.18 |
Semi-major axis (a) | 0.095a | ± 0.004 |
| Eccentricity (e) | 0 | |
Inclination (i) | 71.5° | ± 1.9 |
Longitude of periastron (ω) | 0° | |
| Node (Ω) | 112.5° | ± 1.7 |
Notes | | |
Reference | Tok2019e | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
95.6 |
0.072 |
| 2001 |
104.0 |
0.087 |
| 2002 |
110.4 |
0.094 |
| 2003 |
116.4 |
0.093 |
| 2004 |
123.2 |
0.083 |
| 2005 |
132.8 |
0.066 |
| 2006 |
150.7 |
0.045 |
| 2007 |
192.0 |
0.031 |
| 2008 |
243.2 |
0.038 |
| 2009 |
267.2 |
0.059 |
| 2010 |
278.8 |
0.078 |
| 2011 |
286.3 |
0.090 |
| 2012 |
292.4 |
0.095 |
| 2013 |
298.5 |
0.091 |
| 2014 |
306.0 |
0.078 |
| 2015 |
317.5 |
0.059 |
| 2016 |
341.1 |
0.039 |
| 2017 |
31.8 |
0.031 |
| 2018 |
73.8 |
0.045 |
| 2019 |
92.0 |
0.066 |
| 2020 |
101.7 |
0.083 |
| 2021 |
108.5 |
0.093 |
| 2022 |
114.5 |
0.095 |
| 2023 |
120.8 |
0.087 |
| 2024 |
129.2 |
0.072 |
| 2025 |
143.4 |
0.052 |
| 2026 |
175.2 |
0.033 |
| 2027 |
229.8 |
0.033 |
| 2028 |
261.6 |
0.052 |
| 2029 |
275.8 |
0.072 |
| 2030 |
284.2 |
0.087 |
|
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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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