04287+1552 MKT 13 Aa,Ab
04h 28m 39.74s +15° 52' 15.2" P.A. 334.00 sep 0.0 mag 3.74,4.86 Sp A7III dist. 46.1 pc (150.38 l.y.)
Coord 2000 |
04287+1552 |
|
Discov num |
MKT 13 |
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Comp |
Aa,Ab |
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Coord arcsec 2000 |
04 28 39.74 +15 52 15.2 |
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Date first |
1989 |
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Date last |
1998 |
|
Obs |
34 |
|
Pa first |
8 |
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Pa last |
333.9 |
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P.A. Now (θ) |
333.9° |
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Sep first |
0.0 |
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Sep last |
0.009 |
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Sep. Now (ρ) |
0.009" |
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Mag pri |
3.74 |
|
Mag sec |
4.86 |
|
delta mag (ΔM) |
1.12 |
|
Spectral class |
A7III (white) |
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Pri motion ra |
+106 |
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Sec motion ra |
|
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Pri motion dec |
-020 |
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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.
04287+1552 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
93957 |
04 28 40 +15 52 15 |
MKT 13 Aa,Ab |
1998 |
34 |
334 |
0.0 |
3.74 |
4.86 |
1.12 |
Y |
<=== |
Show |
Chamukuy |
93957 |
04 28 40 +15 52 15 |
STFA 10 AB |
2019 |
46 |
347 |
336.9 |
3.41 |
3.94 |
0.53 |
|
|
Show |
|
93955 |
04 28 34 +15 57 44 |
MCA 15 Ba,Bb |
2020 |
51 |
351 |
0.2 |
3.84 |
7.30 |
3.46 |
Y |
|
Show |
|
93955 |
04 28 34 +15 57 44 |
BPMA 7 BC |
2015 |
7 |
75 |
268.3 |
3.84 |
11.96 |
8.12 |
|
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Quintuple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Common name |
Chamukuy |
|
Constellation |
Taurus |
|
SAO |
93957 |
|
HIP |
20894 |
|
Tycho2 |
1265-01172-1 |
|
Gaia DR2 |
3312744219987686144 |
|
HD |
28319 |
|
HR |
1412 |
|
GC |
5436 |
|
BD |
BD+15 632 |
|
Bayer |
Theta 2 Tauri |
|
Bayer name |
The2 Tau |
|
Flamsteed |
78 Tauri |
|
Flamsteed name |
78 Tau |
|
Distance |
46.1 |
|
Distance ly |
150.38 |
|
Bayer greek |
θ2 Tau |
|
ORBITAL ELEMENTS
Period (P) | 140.7302d | ± 0.0002 |
Periastron (T) | 1995.00144y | ± 0.00002 |
Semi-major axis (a) | 18.91m | ± 0.06 |
Eccentricity (e) | 0.736 | ± 0.0003 |
Inclination (i) | 47.8° | ± 0.1 |
Longitude of periastron (ω) | 235.41° | ± 0.08 |
Node (Ω) | 353.82° | ± 0.09 |
Notes | n | |
Reference | Lmp2011 | |
Equinox | 2000 | |
Last observation | 1991 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
161.8 |
0.007 |
2001-01-01 |
44.3 |
0.025 |
2002-01-01 |
7.1 |
0.021 |
2003-01-01 |
68.6 |
0.018 |
2004-01-01 |
26.0 |
0.027 |
2005-01-01 |
139.2 |
0.009 |
2006-01-01 |
42.1 |
0.025 |
2007-01-01 |
3.7 |
0.019 |
2008-01-01 |
64.6 |
0.019 |
2009-01-01 |
24.1 |
0.026 |
2010-01-01 |
123.0 |
0.010 |
2011-01-01 |
40.0 |
0.026 |
2012-01-01 |
359.6 |
0.017 |
2013-01-01 |
61.0 |
0.020 |
2014-01-01 |
22.1 |
0.026 |
2015-01-01 |
110.5 |
0.011 |
2016-01-01 |
37.9 |
0.026 |
2017-01-01 |
354.5 |
0.015 |
2018-01-01 |
57.8 |
0.021 |
2019-01-01 |
20.0 |
0.026 |
2020-01-01 |
100.3 |
0.012 |
2021-01-01 |
35.9 |
0.026 |
2022-01-01 |
347.3 |
0.012 |
2023-01-01 |
54.8 |
0.022 |
2024-01-01 |
17.9 |
0.025 |
2025-01-01 |
92.0 |
0.013 |
2026-01-01 |
34.0 |
0.027 |
2027-01-01 |
335.4 |
0.009 |
2028-01-01 |
52.0 |
0.023 |
2029-01-01 |
15.6 |
0.024 |
2030-01-01 |
85.0 |
0.015 |
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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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