02095+3459 MKT 4 (Bet Tri)
02h 09m 32.52s +34° 59' 14.6" P.A. 46.00 sep 0.0 mag 3.60,4.00 Sp A5 dist. 38.9 pc (126.89 l.y.)
Coord 2000 |
02095+3459 |
|
Discov num |
MKT 4 |
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Comp |
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Coord arcsec 2000 |
02 09 32.52 +34 59 14.6 |
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Date first |
1989 |
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Date last |
1990 |
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Obs |
34 |
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Pa first |
258 |
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Pa last |
45.9 |
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P.A. Now (θ) |
45.9° |
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Sep first |
0.0 |
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Sep last |
0.006 |
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Sep. Now (ρ) |
0.006" |
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Mag pri |
3.60 |
|
Mag sec |
4.00 |
|
delta mag (ΔM) |
0.4 |
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Spectral class |
A5 (white) |
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Pri motion ra |
+148 |
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Sec motion ra |
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Pri motion dec |
-040 |
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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
Name |
Bet Tri |
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Constellation |
Triangulum |
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SAO |
55306 |
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HIP |
10064 |
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Tycho2 |
2317-01647-1 |
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Gaia DR2 |
329384516559990144 |
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HD |
13161 |
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HR |
622 |
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GC |
2572 |
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BD |
BD+34 381 |
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Bayer |
Beta Trianguli |
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Bayer name |
Bet Tri |
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Flamsteed |
4 Trianguli |
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Flamsteed name |
4 Tri |
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FK5 |
75 |
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Distance |
38.9 |
|
Distance ly |
126.89 |
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Bayer greek |
β Tri |
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ORBITAL ELEMENTS
Period (P) | 31.387d | ± 0.001 |
Periastron (T) | 47729.07d (1989.554y) | ± 0.03 |
Semi-major axis (a) | 8.02m | ± 0.05 |
Eccentricity (e) | 0.44 | ± 0.002 |
Inclination (i) | 129.9° | ± 0.2 |
Longitude of periastron (ω) | 298.1° | ± 0.2 |
Node (Ω) | 64.9° | ± 0.3 |
Notes | n | |
Reference | MkT1995 | |
Equinox | 2000 | |
Last observation | 1990 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
285.2 |
0.009 |
2001-01-01 |
18.5 |
0.006 |
2002-01-01 |
241.3 |
0.008 |
2003-01-01 |
301.4 |
0.008 |
2004-01-01 |
49.8 |
0.006 |
2005-01-01 |
257.5 |
0.009 |
2006-01-01 |
321.8 |
0.007 |
2007-01-01 |
99.5 |
0.004 |
2008-01-01 |
270.9 |
0.010 |
2009-01-01 |
347.7 |
0.007 |
2010-01-01 |
206.5 |
0.004 |
2011-01-01 |
284.5 |
0.009 |
2012-01-01 |
17.1 |
0.006 |
2013-01-01 |
240.4 |
0.008 |
2014-01-01 |
300.6 |
0.008 |
2015-01-01 |
48.3 |
0.006 |
2016-01-01 |
256.9 |
0.009 |
2017-01-01 |
320.8 |
0.007 |
2018-01-01 |
95.8 |
0.004 |
2019-01-01 |
270.3 |
0.010 |
2020-01-01 |
346.4 |
0.007 |
2021-01-01 |
203.6 |
0.004 |
2022-01-01 |
283.9 |
0.009 |
2023-01-01 |
15.7 |
0.006 |
2024-01-01 |
239.4 |
0.008 |
2025-01-01 |
299.7 |
0.008 |
2026-01-01 |
46.8 |
0.006 |
2027-01-01 |
256.2 |
0.009 |
2028-01-01 |
319.8 |
0.007 |
2029-01-01 |
92.3 |
0.004 |
2030-01-01 |
269.7 |
0.010 |
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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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