11342+1101 YSC 43 Aa,Ab
11h 34m 09.95s +11° 01' 25.9" P.A. 173.00 sep 0.0 mag 6.90,8.20 Sp A2m dist. 102.88 pc (335.59 l.y.)
| Coord 2000 |
11342+1101 |
|
Discov num |
YSC 43 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
11 34 09.95 +11 01 25.9 |
|
| Date first |
2007 |
|
Date last |
2021 |
|
Obs |
13 |
|
| Pa first |
161 |
|
Pa last |
173.4 |
|
P.A. Now (θ) |
173.4° |
|
| Sep first |
0.1 |
|
Sep last |
0.025 |
|
Sep. Now (ρ) |
0.025" |
|
| Mag pri |
6.90 |
|
Mag sec |
8.20 |
|
delta mag (ΔM) |
1.3 |
|
Spectral class |
A2m (white) |
|
| Pri motion ra |
+035 |
|
Sec motion ra |
|
|
| Pri motion dec |
-019 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
11342+1101 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
99668 |
11 34 10 +11 01 26 |
YSC 43 Aa,Ab |
2021 |
13 |
173 |
0.0 |
6.90 |
8.20 |
1.30 |
Y |
<=== |
| Show |
HD 100518 |
99668 |
11 34 10 +11 01 26 |
HDS 1642 AB |
2021 |
29 |
246 |
1.2 |
6.62 |
9.43 |
2.81 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Leo |
|
SAO |
99668 |
|
HIP |
56429 |
|
Tycho2 |
0859-00116-1 |
|
| HD |
100518 |
|
HR |
4454 |
|
BD |
BD+11 2372 |
|
Distance |
102.88 |
|
| Distance ly |
335.59 |
|
ORBITAL ELEMENTS
| Period (P) | 10.97y | |
Periastron (T) | 2005.44y | |
Semi-major axis (a) | 0.0666a | |
| Eccentricity (e) | 0.522 | |
Inclination (i) | 101.3° | |
Longitude of periastron (ω) | 77.2° | |
| Node (Ω) | 351.8° | |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | 2019 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
129.7 |
0.029 |
| 2001 |
81.5 |
0.019 |
| 2002 |
30.4 |
0.028 |
| 2003 |
9.7 |
0.042 |
| 2004 |
358.7 |
0.050 |
| 2005 |
345.9 |
0.032 |
| 2006 |
182.0 |
0.029 |
| 2007 |
169.7 |
0.060 |
| 2008 |
163.8 |
0.065 |
| 2009 |
157.5 |
0.058 |
| 2010 |
148.2 |
0.044 |
| 2011 |
128.9 |
0.029 |
| 2012 |
79.6 |
0.019 |
| 2013 |
29.5 |
0.028 |
| 2014 |
9.3 |
0.043 |
| 2015 |
358.4 |
0.050 |
| 2016 |
345.2 |
0.031 |
| 2017 |
181.2 |
0.030 |
| 2018 |
169.5 |
0.060 |
| 2019 |
163.6 |
0.065 |
| 2020 |
157.3 |
0.058 |
| 2021 |
147.8 |
0.044 |
| 2022 |
128.0 |
0.028 |
| 2023 |
77.6 |
0.019 |
| 2024 |
28.6 |
0.029 |
| 2025 |
8.9 |
0.043 |
| 2026 |
358.1 |
0.050 |
| 2027 |
344.4 |
0.029 |
| 2028 |
180.4 |
0.032 |
| 2029 |
169.3 |
0.061 |
| 2030 |
163.5 |
0.065 |
|
|
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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