02171+3413 MKT 5 Aa,Ab
02h 17m 03.23s +34° 13' 27.2" P.A. 26.00 sep 0.0 mag 5.00,6.90 Sp F9V dist. 10.78 pc (35.16 l.y.)
Coord 2000 |
02171+3413 |
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Discov num |
MKT 5 |
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Comp |
Aa,Ab |
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Coord arcsec 2000 |
02 17 03.23 +34 13 27.2 |
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Date first |
1990 |
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Date last |
1992 |
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Obs |
21 |
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Pa first |
296 |
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Pa last |
26.4 |
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P.A. Now (θ) |
26.4° |
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Sep first |
0.0 |
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Sep last |
0.01 |
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Sep. Now (ρ) |
0.01" |
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Mag pri |
5.00 |
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Mag sec |
6.90 |
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delta mag (ΔM) |
1.9 |
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Spectral class |
F9V (yellow-white) |
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Pri motion ra |
+115 |
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Sec motion ra |
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Pri motion dec |
-025 |
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Sec motion dec |
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Notes |
N
O
P
(See Notes, Orbital solution, 100-year proper motion) |
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This double is physical.
02171+3413 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
55420 |
02 17 03 +34 13 27 |
MKT 5 Aa,Ab |
1992 |
21 |
26 |
0.0 |
5.00 |
6.90 |
1.90 |
Y |
<=== |
Show |
Del Tri |
55420 |
02 17 03 +34 13 27 |
DOR 66 AB |
2010 |
6 |
301 |
166.8 |
4.85 |
13.60 |
8.75 |
|
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Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Triangulum |
|
SAO |
55420 |
|
HIP |
10644 |
|
Tycho2 |
2318-01874-1 |
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HD |
13974 |
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HR |
660 |
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GC |
2733 |
|
ADS |
1739 |
|
GL |
Gl 92 |
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BD |
BD+33 395 |
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Bayer |
Delta Trianguli |
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Bayer name |
Del Tri |
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Flamsteed |
8 Trianguli |
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Flamsteed name |
8 Tri |
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Distance |
10.78 |
|
Distance ly |
35.16 |
|
Bayer greek |
δ Tri |
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ORBITAL ELEMENTS
Period (P) | 10.01969d | ± 0.00017 |
Periastron (T) | 48919.17d (1992.812y) | ± 0.8 |
Semi-major axis (a) | 9.8m | ± 0.13 |
Eccentricity (e) | 0.011 | ± 0.0055 |
Inclination (i) | 163° | ± 3.6 |
Longitude of periastron (ω) | 171° | ± 29 |
Node (Ω) | 37° | ± 1.9 |
Notes | n | |
Reference | Pbx2000b | |
Equinox | | |
Last observation | | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
218.5 |
0.010 |
2001-01-01 |
54.9 |
0.010 |
2002-01-01 |
252.3 |
0.010 |
2003-01-01 |
88.0 |
0.010 |
2004-01-01 |
287.5 |
0.009 |
2005-01-01 |
122.9 |
0.009 |
2006-01-01 |
323.4 |
0.009 |
2007-01-01 |
158.5 |
0.009 |
2008-01-01 |
357.9 |
0.010 |
2009-01-01 |
193.1 |
0.010 |
2010-01-01 |
30.6 |
0.010 |
2011-01-01 |
226.6 |
0.010 |
2012-01-01 |
62.8 |
0.010 |
2013-01-01 |
260.8 |
0.010 |
2014-01-01 |
96.3 |
0.010 |
2015-01-01 |
296.3 |
0.009 |
2016-01-01 |
131.6 |
0.009 |
2017-01-01 |
332.0 |
0.009 |
2018-01-01 |
167.1 |
0.009 |
2019-01-01 |
6.0 |
0.010 |
2020-01-01 |
201.3 |
0.010 |
2021-01-01 |
38.4 |
0.010 |
2022-01-01 |
234.8 |
0.010 |
2023-01-01 |
70.7 |
0.010 |
2024-01-01 |
269.3 |
0.009 |
2025-01-01 |
104.8 |
0.009 |
2026-01-01 |
305.0 |
0.009 |
2027-01-01 |
140.3 |
0.009 |
2028-01-01 |
340.4 |
0.010 |
2029-01-01 |
175.5 |
0.010 |
2030-01-01 |
14.0 |
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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