15245+3723 CHR 181 Aa,Ab
15h 24m 29.54s +37° 22' 37.1" P.A. 188.00 sep 0.1 mag 4.31, Sp F2IVa dist. 34.69 pc (113.16 l.y.)
| Coord 2000 |
15245+3723 |
|
Discov num |
CHR 181 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
15 24 29.54 +37 22 37.1 |
|
| Date first |
1988 |
|
Date last |
2012 |
|
Obs |
47 |
|
| Pa first |
350 |
|
Pa last |
187.8 |
|
P.A. Now (θ) |
287.6° |
|
| Sep first |
0.1 |
|
Sep last |
0.071 |
|
Sep. Now (ρ) |
0.114" |
|
| Mag pri |
4.31 |
|
Mag sec |
|
|
delta mag (ΔM) |
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|
Spectral class |
F2IVa (yellow-white) |
|
| Pri motion ra |
-146 |
|
Sec motion ra |
|
|
| Pri motion dec |
+087 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
15245+3723 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
64686 |
15 24 30 +37 22 37 |
CHR 181 Aa,Ab |
2012 |
47 |
188 |
0.1 |
4.31 |
|
|
Y |
<=== |
| Show |
Alkalurops |
64686 |
15 24 30 +37 22 37 |
STFA 28 AB |
2020 |
154 |
171 |
109.2 |
4.33 |
7.09 |
2.76 |
|
|
| Show |
|
64687 |
15 24 31 +37 20 52 |
STF 1938 Ba,Bb |
2020 |
763 |
2 |
2.2 |
7.09 |
7.63 |
0.54 |
Y |
|
Quadruple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Alkalurops |
|
Var name |
NSV7063 Boo |
|
Constellation |
Bootes |
|
SAO |
64686 |
|
| HIP |
75411 |
|
Tycho2 |
2570-01521-1 |
|
Gaia DR2 |
1387349379494192896 |
|
HD |
137391 |
|
| HR |
5733 |
|
GC |
20724 |
|
ADS |
9626 |
|
GL |
NN 3903A |
|
| BD |
BD+37 2636 |
|
Bayer |
Mu 1 Bootis |
|
Bayer name |
Mu1 Boo |
|
Flamsteed |
51 Bootis |
|
| Flamsteed name |
51 Boo |
|
FK5 |
568 |
|
Distance |
34.69 |
|
Distance ly |
113.16 |
|
| Bayer greek |
μ1 Boo |
|
| Other names |
INKALUNIS, ICALURUS, CLAVA, VENABULUM |
|
ORBITAL ELEMENTS
| Period (P) | 3.7495y | ± 0.0039 |
Periastron (T) | 2006.3307y | ± 0.0063 |
Semi-major axis (a) | 0.099a | ± 0.00024 |
| Eccentricity (e) | 0.26998 | ± 0.00189 |
Inclination (i) | 130.116° | ± 0.231 |
Longitude of periastron (ω) | 43.767° | ± 0.605 |
| Node (Ω) | 129.528° | ± 0.306 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2012 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
309.2 |
0.114 |
| 2001 |
260.5 |
0.092 |
| 2002 |
159.7 |
0.077 |
| 2003 |
10.3 |
0.057 |
| 2004 |
298.4 |
0.118 |
| 2005 |
240.5 |
0.080 |
| 2006 |
136.1 |
0.078 |
| 2007 |
338.8 |
0.081 |
| 2008 |
287.7 |
0.114 |
| 2009 |
214.5 |
0.072 |
| 2010 |
109.2 |
0.067 |
| 2011 |
321.4 |
0.102 |
| 2012 |
275.5 |
0.105 |
| 2013 |
185.8 |
0.072 |
| 2014 |
65.2 |
0.051 |
| 2015 |
309.1 |
0.114 |
| 2016 |
260.4 |
0.092 |
| 2017 |
159.5 |
0.077 |
| 2018 |
9.9 |
0.058 |
| 2019 |
298.3 |
0.118 |
| 2020 |
240.3 |
0.080 |
| 2021 |
135.9 |
0.078 |
| 2022 |
338.6 |
0.082 |
| 2023 |
287.6 |
0.114 |
| 2024 |
214.3 |
0.072 |
| 2025 |
108.9 |
0.067 |
| 2026 |
321.3 |
0.102 |
| 2027 |
275.4 |
0.105 |
| 2028 |
185.6 |
0.072 |
| 2029 |
64.8 |
0.051 |
| 2030 |
309.0 |
0.114 |
|
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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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