13547+1824 SHJ 169 (Muphrid)
13h 54m 41.07s +18° 23' 51.8" P.A. 85.00 sep 114.9 mag 2.72,9.99 Sp G0IV dist. 11.4 pc (37.19 l.y.)
Coord 2000 |
13547+1824 |
|
Discov num |
SHJ 169 |
|
Comp |
|
|
Coord arcsec 2000 |
13 54 41.07 +18 23 51.8 |
|
Date first |
1822 |
|
Date last |
2020 |
|
Obs |
35 |
|
Pa first |
119 |
|
Pa last |
84.5 |
|
P.A. Now (θ) |
84.5° |
|
Sep first |
126.2 |
|
Sep last |
114.89 |
|
Sep. Now (ρ) |
114.89" |
|
Mag pri |
2.72 |
|
Mag sec |
9.99 |
|
delta mag (ΔM) |
7.27 |
|
Spectral class |
G0IV (yellow) |
|
Pri motion ra |
-057 |
|
Sec motion ra |
-040 |
|
Pri motion dec |
-359 |
|
Sec motion dec |
+017 |
|
Notes |
N
L
U
(See Notes, Linear solution, Proper motion indicates non-physical) |
|
rPM=1.035
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
Common name |
Muphrid |
|
Constellation |
Bootes |
|
SAO |
100766 |
|
HIP |
67927 |
|
Tycho2 |
1470-01157-1 |
|
HD |
121370 |
|
HR |
5235 |
|
GC |
18805 |
|
GL |
Gl 534 |
|
BD |
BD+19 2725 |
|
Bayer |
Eta Bootis |
|
Bayer name |
Eta Boo |
|
Flamsteed |
8 Bootis |
|
Flamsteed name |
8 Boo |
|
FK5 |
513 |
|
Distance |
11.4 |
|
Distance ly |
37.19 |
|
Bayer greek |
η Boo |
|
Meaning |
reviews (of the lance-bearer) |
|
ORBITAL ELEMENTS SOLUTION #1
Period (P) | 494.2d | |
Periastron (T) | 28136.2d (1935.91y) | |
Semi-major axis (a) | 36.02m | ± 0.56 |
Eccentricity (e) | 0.26 | |
Inclination (i) | 115.7° | ± 1.6 |
Longitude of periastron (ω) | 326.3° | |
Node (Ω) | 75.2° | ± 1.4 |
Notes | n | |
Reference | Jnc2005 | |
Equinox | | |
Last observation | 1992 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
296.8 |
0.025 |
2001-01-01 |
62.2 |
0.027 |
2002-01-01 |
216.7 |
0.020 |
2003-01-01 |
261.9 |
0.043 |
2004-01-01 |
313.2 |
0.021 |
2005-01-01 |
73.4 |
0.028 |
2006-01-01 |
232.1 |
0.028 |
2007-01-01 |
266.6 |
0.042 |
2008-01-01 |
337.6 |
0.017 |
2009-01-01 |
85.4 |
0.025 |
2010-01-01 |
241.2 |
0.034 |
2011-01-01 |
271.9 |
0.039 |
2012-01-01 |
7.1 |
0.017 |
2013-01-01 |
102.7 |
0.019 |
2014-01-01 |
247.7 |
0.039 |
2015-01-01 |
278.1 |
0.035 |
2016-01-01 |
32.1 |
0.020 |
2017-01-01 |
136.0 |
0.014 |
2018-01-01 |
252.9 |
0.042 |
2019-01-01 |
286.1 |
0.030 |
2020-01-01 |
49.8 |
0.024 |
2021-01-01 |
186.3 |
0.014 |
2022-01-01 |
257.6 |
0.043 |
2023-01-01 |
297.3 |
0.025 |
2024-01-01 |
62.7 |
0.027 |
2025-01-01 |
217.5 |
0.020 |
2026-01-01 |
262.1 |
0.043 |
2027-01-01 |
314.0 |
0.020 |
2028-01-01 |
73.8 |
0.028 |
2029-01-01 |
232.6 |
0.028 |
2030-01-01 |
266.8 |
0.042 |
|
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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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ORBITAL ELEMENTS SOLUTION #2
Period (P) | 1620.3d (4.44y) | |
Periastron (T) | 47179.1d (1988.048y) | |
Semi-major axis (a) | 10.8m | ± 2.7 |
Eccentricity (e) | 0.68 | |
Inclination (i) | 20.9° | ± 4.1 |
Longitude of periastron (ω) | 177.6° | |
Node (Ω) | 6° | ± 10 |
Notes | | |
Reference | Jnc2005 | |
Equinox | | |
Last observation | 1992 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
22.1 |
0.016 |
2001-01-01 |
72.1 |
0.007 |
2002-01-01 |
319.2 |
0.011 |
2003-01-01 |
352.0 |
0.017 |
2004-01-01 |
12.3 |
0.018 |
2005-01-01 |
40.4 |
0.012 |
2006-01-01 |
268.3 |
0.005 |
2007-01-01 |
341.3 |
0.015 |
2008-01-01 |
3.5 |
0.018 |
2009-01-01 |
25.5 |
0.015 |
2010-01-01 |
93.4 |
0.005 |
2011-01-01 |
325.8 |
0.012 |
2012-01-01 |
354.8 |
0.018 |
2013-01-01 |
15.0 |
0.017 |
2014-01-01 |
46.7 |
0.011 |
2015-01-01 |
291.9 |
0.007 |
2016-01-01 |
344.7 |
0.016 |
2017-01-01 |
6.1 |
0.018 |
2018-01-01 |
29.2 |
0.015 |
2019-01-01 |
133.0 |
0.004 |
2020-01-01 |
331.2 |
0.013 |
2021-01-01 |
357.4 |
0.018 |
2022-01-01 |
17.8 |
0.017 |
2023-01-01 |
54.8 |
0.009 |
2024-01-01 |
306.1 |
0.008 |
2025-01-01 |
347.9 |
0.017 |
2026-01-01 |
8.6 |
0.018 |
2027-01-01 |
33.3 |
0.014 |
2028-01-01 |
197.7 |
0.003 |
2029-01-01 |
335.8 |
0.014 |
2030-01-01 |
360.0 |
0.018 |
|
|
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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ORBITAL ELEMENTS SOLUTION #3
Period (P) | 457.8d | |
Periastron (T) | 48207d (1990.862y) | |
Semi-major axis (a) | 4.81m | ± 1.1 |
Eccentricity (e) | 0.062 | |
Inclination (i) | 53.9° | ± 28.4 |
Longitude of periastron (ω) | 203.5° | ± 28.2 |
Node (Ω) | 8.5° | ± 35.5 |
Notes | | |
Reference | Pbx2000a | |
Equinox | | |
Last observation | 1993 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
337.8 |
0.004 |
2001-01-01 |
233.3 |
0.003 |
2002-01-01 |
174.8 |
0.004 |
2003-01-01 |
87.4 |
0.003 |
2004-01-01 |
19.1 |
0.005 |
2005-01-01 |
334.4 |
0.004 |
2006-01-01 |
228.5 |
0.003 |
2007-01-01 |
172.0 |
0.004 |
2008-01-01 |
81.4 |
0.003 |
2009-01-01 |
17.0 |
0.005 |
2010-01-01 |
330.7 |
0.004 |
2011-01-01 |
224.1 |
0.004 |
2012-01-01 |
169.0 |
0.004 |
2013-01-01 |
75.7 |
0.003 |
2014-01-01 |
14.9 |
0.005 |
2015-01-01 |
326.7 |
0.004 |
2016-01-01 |
220.0 |
0.004 |
2017-01-01 |
165.9 |
0.004 |
2018-01-01 |
70.2 |
0.003 |
2019-01-01 |
12.8 |
0.005 |
2020-01-01 |
322.3 |
0.003 |
2021-01-01 |
216.2 |
0.004 |
2022-01-01 |
162.7 |
0.004 |
2023-01-01 |
65.2 |
0.003 |
2024-01-01 |
10.7 |
0.005 |
2025-01-01 |
317.6 |
0.003 |
2026-01-01 |
212.7 |
0.004 |
2027-01-01 |
159.3 |
0.004 |
2028-01-01 |
60.4 |
0.003 |
2029-01-01 |
8.6 |
0.005 |
2030-01-01 |
312.4 |
0.003 |
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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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