02457-3943 B 2077
02h 45m 44.77s -39° 43' 01.8" P.A. 18.00 sep 10.5 mag 7.86,15.00 Sp G3IV/V dist. 64.89 pc (211.67 l.y.)
Coord 2000 |
02457-3943 |
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Discov num |
B 2077 |
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Comp |
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Coord arcsec 2000 |
02 45 44.77 -39 43 01.8 |
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Date first |
1932 |
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Date last |
1999 |
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Obs |
2 |
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Pa first |
37 |
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Pa last |
18 |
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P.A. Now (θ) |
18° |
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Sep first |
7.0 |
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Sep last |
10.5 |
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Sep. Now (ρ) |
10.5" |
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Mag pri |
7.86 |
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Mag sec |
15.00 |
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delta mag (ΔM) |
7.14 |
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Spectral class |
G3IV/V (yellow) |
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Pri motion ra |
+087 |
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Sec motion ra |
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Pri motion dec |
+049 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Eridanus |
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SAO |
193898 |
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HIP |
12894 |
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Tycho2 |
7559-00884-1 |
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Gaia DR2 |
4949308041743808384 |
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HD |
17354 |
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GC |
3334 |
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CD |
CD-40 716 |
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CP |
CP-40 230 |
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Distance |
64.89 |
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Distance ly |
211.67 |
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SUSPECTED ORBITAL ELEMENTS
Identifier | 02457-3943 B 2077 A |
coord_arcsec_2000 | 024544.77-394301.8 |
Period (P) | 841d (2.3y) | ± 30 |
Periastron (T) | 48839d (1992.592y) | ± 128 |
Semi-major axis (a) | 10.1m | ± 1.4 |
Eccentricity (e) | 0.28 | ± 0.17 |
Inclination (i) | 123° | ± 8 |
Longitude of periastron (ω) | 114° | ± 100 |
Node (Ω) | 285° | ± 94 |
Notes | | |
Reference | Gln2007 | |
Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
77.0 |
0.008 |
2001-01-01 |
304.3 |
0.011 |
2002-01-01 |
111.8 |
0.008 |
2003-01-01 |
330.4 |
0.009 |
2004-01-01 |
205.5 |
0.004 |
2005-01-01 |
15.0 |
0.007 |
2006-01-01 |
274.9 |
0.009 |
2007-01-01 |
65.3 |
0.008 |
2008-01-01 |
297.9 |
0.011 |
2009-01-01 |
100.5 |
0.009 |
2010-01-01 |
321.1 |
0.009 |
2011-01-01 |
160.8 |
0.004 |
2012-01-01 |
359.1 |
0.007 |
2013-01-01 |
264.3 |
0.008 |
2014-01-01 |
51.7 |
0.007 |
2015-01-01 |
291.6 |
0.011 |
2016-01-01 |
90.4 |
0.009 |
2017-01-01 |
313.1 |
0.010 |
2018-01-01 |
132.1 |
0.006 |
2019-01-01 |
345.1 |
0.008 |
2020-01-01 |
247.7 |
0.006 |
2021-01-01 |
36.3 |
0.007 |
2022-01-01 |
284.9 |
0.010 |
2023-01-01 |
80.1 |
0.008 |
2024-01-01 |
306.1 |
0.011 |
2025-01-01 |
115.4 |
0.008 |
2026-01-01 |
333.3 |
0.008 |
2027-01-01 |
217.5 |
0.004 |
2028-01-01 |
19.7 |
0.007 |
2029-01-01 |
277.3 |
0.010 |
2030-01-01 |
68.7 |
0.008 |
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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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