03477+2256 BOV 20
03h 47m 40.98s +22° 55' 47.8" P.A. 5.00 sep 0.1 mag 10.40,11.50 Sp K3V
Coord 2000 |
03477+2256 |
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Discov num |
BOV 20 |
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Comp |
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Coord arcsec 2000 |
03 47 40.98 +22 55 47.8 |
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Date first |
1996 |
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Date last |
1996 |
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Obs |
1 |
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Pa first |
5 |
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Pa last |
5.1 |
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P.A. Now (θ) |
5.1° |
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Sep first |
0.1 |
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Sep last |
0.09 |
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Sep. Now (ρ) |
0.09" |
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Mag pri |
10.40 |
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Mag sec |
11.50 |
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delta mag (ΔM) |
1.1 |
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Spectral class |
K3V (yellow-orange) |
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Pri motion ra |
+018 |
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Sec motion ra |
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Pri motion dec |
-044 |
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Sec motion dec |
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Notes |
K
(K-band or other infrared magnitudes) |
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Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Taurus |
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Tycho2 |
1800-01604-1 |
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Gaia DR2 |
64888129687348736 |
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SUSPECTED ORBITAL ELEMENTS
Identifier | 03474+2255 |
coord_arcsec_2000 | 034722.88+225520.0 |
Period (P) | 980.5113d (2.68y) | ± 83.2956 |
Periastron (T) | 48534.5234d (1991.759y) | ± 29.7977 |
Semi-major axis (a) | 5.88m | ± 2.01 |
Eccentricity (e) | 0 | |
Inclination (i) | 54.82° | ± 12.44 |
Longitude of periastron (ω) | 0° | |
Node (Ω) | 137.64° | ± 12.91 |
Notes | n | |
Reference | HIP1997d | |
Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
152.8 |
0.006 |
2001-01-01 |
305.3 |
0.006 |
2002-01-01 |
84.5 |
0.004 |
2003-01-01 |
191.8 |
0.004 |
2004-01-01 |
330.4 |
0.006 |
2005-01-01 |
123.0 |
0.006 |
2006-01-01 |
259.5 |
0.004 |
2007-01-01 |
7.2 |
0.004 |
2008-01-01 |
148.2 |
0.006 |
2009-01-01 |
300.6 |
0.005 |
2010-01-01 |
74.3 |
0.004 |
2011-01-01 |
182.8 |
0.004 |
2012-01-01 |
326.0 |
0.006 |
2013-01-01 |
118.1 |
0.005 |
2014-01-01 |
248.7 |
0.004 |
2015-01-01 |
358.8 |
0.004 |
2016-01-01 |
143.9 |
0.006 |
2017-01-01 |
295.5 |
0.005 |
2018-01-01 |
62.9 |
0.003 |
2019-01-01 |
175.1 |
0.004 |
2020-01-01 |
321.8 |
0.006 |
2021-01-01 |
112.8 |
0.005 |
2022-01-01 |
236.9 |
0.003 |
2023-01-01 |
351.6 |
0.005 |
2024-01-01 |
139.7 |
0.006 |
2025-01-01 |
289.9 |
0.005 |
2026-01-01 |
50.7 |
0.003 |
2027-01-01 |
168.3 |
0.005 |
2028-01-01 |
317.6 |
0.006 |
2029-01-01 |
106.9 |
0.005 |
2030-01-01 |
224.4 |
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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