15038+4739 STF 1909 (44 Boo)
15h 03m 47.30s +47° 39' 14.6" P.A. 138.00 sep 0.2 mag 5.20,6.10 Sp F7V+K4V dist. 12.51 pc (40.81 l.y.)
Coord 2000 |
15038+4739 |
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Discov num |
STF1909 |
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Comp |
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Coord arcsec 2000 |
15 03 47.30 +47 39 14.6 |
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Date first |
1819 |
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Date last |
2020 |
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Obs |
864 |
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Pa first |
228 |
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Pa last |
138 |
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P.A. Now (θ) |
200° |
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Sep first |
1.5 |
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Sep last |
0.22 |
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Sep. Now (ρ) |
0.391" |
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Mag pri |
5.20 |
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Mag sec |
6.10 |
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delta mag (ΔM) |
0.9 |
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Spectral class |
F7V+K4V (yellow-white/yellow-orange) |
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Pri motion ra |
-444 |
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Sec motion ra |
-374 |
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Pri motion dec |
+010 |
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Sec motion dec |
+039 |
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Notes |
N
O
(See Notes, Orbital solution) |
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rPM=0.171 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
44 Boo |
|
Var name |
i Boo |
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Constellation |
Bootes |
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SAO |
45357 |
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HIP |
73695 |
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Tycho2 |
3484-01580-1 |
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HD |
133640 |
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HR |
5618 |
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GC |
20281 |
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ADS |
9494 |
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GL |
Gl 575A |
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BD |
BD+48 2259 |
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Flamsteed |
44 Bootis |
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Flamsteed name |
44 Boo |
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Distance |
12.51 |
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Distance ly |
40.81 |
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ORBITAL ELEMENTS
Period (P) | 214.7628y | ± 2.2807 |
Periastron (T) | 2011.9704y | ± 0.1892 |
Semi-major axis (a) | 3.70131a | ± 0.02931 |
Eccentricity (e) | 0.5145 | ± 0.00455 |
Inclination (i) | 83.708° | ± 0.093 |
Longitude of periastron (ω) | 39.146° | ± 0.813 |
Node (Ω) | 56.678° | ± 0.13 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
53.9 |
2.020 |
2001 |
54.4 |
2.025 |
2002 |
54.9 |
2.022 |
2003 |
55.5 |
2.009 |
2004 |
56.0 |
1.986 |
2005 |
56.6 |
1.953 |
2006 |
57.1 |
1.909 |
2007 |
57.8 |
1.853 |
2008 |
58.4 |
1.785 |
2009 |
59.1 |
1.705 |
2010 |
59.9 |
1.613 |
2011 |
60.8 |
1.510 |
2012 |
61.8 |
1.396 |
2013 |
63.0 |
1.272 |
2014 |
64.5 |
1.139 |
2015 |
66.4 |
0.999 |
2016 |
68.9 |
0.854 |
2017 |
72.5 |
0.704 |
2018 |
78.0 |
0.555 |
2019 |
87.5 |
0.411 |
2020 |
106.1 |
0.287 |
2021 |
141.7 |
0.225 |
2022 |
179.4 |
0.273 |
2023 |
200.0 |
0.391 |
2024 |
210.4 |
0.534 |
2025 |
216.3 |
0.685 |
2026 |
220.1 |
0.838 |
2027 |
222.7 |
0.991 |
2028 |
224.6 |
1.142 |
2029 |
226.0 |
1.291 |
2030 |
227.2 |
1.437 |
2031 |
228.1 |
1.579 |
2032 |
228.9 |
1.719 |
2033 |
229.6 |
1.854 |
2034 |
230.2 |
1.987 |
2035 |
230.7 |
2.116 |
2036 |
231.2 |
2.241 |
2037 |
231.6 |
2.363 |
2038 |
231.9 |
2.481 |
2039 |
232.3 |
2.595 |
2040 |
232.6 |
2.707 |
2041 |
232.9 |
2.814 |
2042 |
233.1 |
2.919 |
2043 |
233.4 |
3.020 |
2044 |
233.6 |
3.117 |
2045 |
233.8 |
3.212 |
2046 |
234.0 |
3.303 |
2047 |
234.2 |
3.392 |
2048 |
234.4 |
3.477 |
2049 |
234.6 |
3.559 |
2050 |
234.7 |
3.639 |
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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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