08211+4725 A 1745 Ca,Cb
08h 21m 08.26s +47° 24' 09.1" P.A. 294.00 sep 0.5 mag 10.33,11.10 Sp G7 dist. 67.84 pc (221.29 l.y.)
| Coord 2000 |
08211+4725 |
|
Discov num |
A 1745 |
|
Comp |
Ca,Cb |
|
Coord arcsec 2000 |
08 21 08.26 +47 24 09.1 |
|
| Date first |
1907 |
|
Date last |
1997 |
|
Obs |
16 |
|
| Pa first |
29 |
|
Pa last |
294.3 |
|
P.A. Now (θ) |
294.3° |
|
| Sep first |
0.4 |
|
Sep last |
0.53 |
|
Sep. Now (ρ) |
0.53" |
|
| Mag pri |
10.33 |
|
Mag sec |
11.10 |
|
delta mag (ΔM) |
0.77 |
|
Spectral class |
G7 (yellow) |
|
| Pri motion ra |
-009 |
|
Sec motion ra |
|
|
| Pri motion dec |
-056 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
08211+4725 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 69894 |
42302 |
08 21 07 +47 24 47 |
HU 224 AB |
2019 |
17 |
313 |
4.2 |
8.56 |
11.95 |
3.39 |
|
|
| Show |
|
42302 |
08 21 07 +47 24 47 |
STT 190 AC |
2018 |
27 |
168 |
38.7 |
8.56 |
10.10 |
1.54 |
|
|
| Show |
|
42302 |
08 21 07 +47 24 47 |
STT 190 AD |
2017 |
23 |
287 |
78.4 |
8.56 |
8.25 |
0.31 |
|
|
| Show |
|
|
08 21 08 +47 24 09 |
A 1745 Ca,Cb |
1997 |
16 |
294 |
0.5 |
10.33 |
11.10 |
0.77 |
Y |
<=== |
| Show |
|
42300 |
08 21 00 +47 25 09 |
STT 190 DC |
2017 |
16 |
127 |
102.7 |
8.25 |
10.10 |
1.85 |
|
|
Quintuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lynx |
|
HIP |
40927 |
|
Tycho2 |
3415-00288-1 |
|
Gaia DR2 |
930501641021758720 |
|
| ADS |
6746 |
|
BD |
BD+47 1566 |
|
Distance |
67.84 |
|
Distance ly |
221.29 |
|
ORBITAL ELEMENTS
| Period (P) | 279.5y | |
Periastron (T) | 1928.5y | |
Semi-major axis (a) | 0.479a | |
| Eccentricity (e) | 0.73 | |
Inclination (i) | 40° | |
Longitude of periastron (ω) | 96° | |
| Node (Ω) | 48° | |
Notes | n | |
Reference | Hei1979b | |
| Equinox | 2000 | |
Last observation | 1978 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
296.5 |
0.539 |
| 2001 |
297.0 |
0.542 |
| 2002 |
297.6 |
0.545 |
| 2003 |
298.1 |
0.547 |
| 2004 |
298.6 |
0.550 |
| 2005 |
299.1 |
0.553 |
| 2006 |
299.6 |
0.555 |
| 2007 |
300.1 |
0.558 |
| 2008 |
300.6 |
0.560 |
| 2009 |
301.1 |
0.562 |
| 2010 |
301.6 |
0.565 |
| 2011 |
302.1 |
0.567 |
| 2012 |
302.5 |
0.569 |
| 2013 |
303.0 |
0.572 |
| 2014 |
303.5 |
0.574 |
| 2015 |
304.0 |
0.576 |
| 2016 |
304.4 |
0.578 |
| 2017 |
304.9 |
0.580 |
| 2018 |
305.3 |
0.582 |
| 2019 |
305.8 |
0.584 |
| 2020 |
306.3 |
0.586 |
| 2021 |
306.7 |
0.588 |
| 2022 |
307.1 |
0.590 |
| 2023 |
307.6 |
0.592 |
| 2024 |
308.0 |
0.593 |
| 2025 |
308.5 |
0.595 |
| 2026 |
308.9 |
0.597 |
| 2027 |
309.3 |
0.598 |
| 2028 |
309.8 |
0.600 |
| 2029 |
310.2 |
0.602 |
| 2030 |
310.6 |
0.603 |
|
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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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