04008+0505 A 1937 AB (HD 25248)
04h 00m 47.29s +05° 04' 58.2" P.A. 150.00 sep 0.1 mag 9.38,9.48 Sp A3 dist. 184.5 pc (601.84 l.y.)
Coord 2000 |
04008+0505 |
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Discov num |
A 1937 |
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Comp |
AB |
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Coord arcsec 2000 |
04 00 47.29 +05 04 58.2 |
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Date first |
1908 |
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Date last |
2020 |
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Obs |
43 |
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Pa first |
39 |
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Pa last |
149.8 |
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P.A. Now (θ) |
166.7° |
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Sep first |
0.2 |
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Sep last |
0.07 |
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Sep. Now (ρ) |
0.087" |
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Mag pri |
9.38 |
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Mag sec |
9.48 |
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delta mag (ΔM) |
0.1 |
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Spectral class |
A3 (white) |
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Pri motion ra |
+017 |
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Sec motion ra |
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Pri motion dec |
-014 |
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Sec motion dec |
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Notes |
N
O
W
(See Notes, Orbital solution, ) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 25248 |
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Constellation |
Taurus |
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SAO |
111558 |
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HIP |
18374 |
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Tycho2 |
0079-01169-1 |
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HD |
25248 |
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ADS |
2928 |
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BD |
BD+04 619 |
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CD |
CD-49 1145 |
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CP |
CP-49 473 |
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Distance |
184.5 |
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Distance ly |
601.84 |
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ORBITAL ELEMENTS
Period (P) | 46.08y | ± 1.04 |
Periastron (T) | 2014.74y | ± 0.12 |
Semi-major axis (a) | 0.0974a | ± 0.0014 |
Eccentricity (e) | 0.535 | ± 0.008 |
Inclination (i) | 40.8° | ± 2 |
Longitude of periastron (ω) | 0.4° | ± 3.4 |
Node (Ω) | 31.9° | ± 3 |
Notes | n | |
Reference | Tok2020e | |
Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
231.6 |
0.130 |
2001 |
234.5 |
0.125 |
2002 |
237.7 |
0.119 |
2003 |
241.2 |
0.113 |
2004 |
245.2 |
0.106 |
2005 |
249.7 |
0.098 |
2006 |
255.0 |
0.091 |
2007 |
261.4 |
0.082 |
2008 |
269.2 |
0.074 |
2009 |
279.1 |
0.065 |
2010 |
291.8 |
0.057 |
2011 |
308.2 |
0.051 |
2012 |
328.6 |
0.046 |
2013 |
351.6 |
0.045 |
2014 |
15.1 |
0.045 |
2015 |
38.2 |
0.045 |
2016 |
61.6 |
0.045 |
2017 |
85.3 |
0.045 |
2018 |
107.3 |
0.048 |
2019 |
125.7 |
0.054 |
2020 |
140.0 |
0.061 |
2021 |
151.1 |
0.070 |
2022 |
159.8 |
0.078 |
2023 |
166.7 |
0.087 |
2024 |
172.4 |
0.095 |
2025 |
177.3 |
0.103 |
2026 |
181.5 |
0.110 |
2027 |
185.2 |
0.116 |
2028 |
188.5 |
0.122 |
2029 |
191.5 |
0.128 |
2030 |
194.3 |
0.132 |
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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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