05047+7404 STT 89 (HD 31590)
05h 04m 39.67s +74° 04' 01.0" P.A. 289.00 sep 0.4 mag 6.53,7.29 Sp A1V dist. 171.23 pc (558.55 l.y.)
Coord 2000 |
05047+7404 |
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Discov num |
STT 89 |
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Comp |
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Coord arcsec 2000 |
05 04 39.67 +74 04 01.0 |
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Date first |
1843 |
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Date last |
2019 |
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Obs |
58 |
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Pa first |
304 |
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Pa last |
288.6 |
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P.A. Now (θ) |
304.7° |
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Sep first |
0.2 |
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Sep last |
0.369 |
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Sep. Now (ρ) |
0.266" |
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Mag pri |
6.53 |
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Mag sec |
7.29 |
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delta mag (ΔM) |
0.76 |
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Spectral class |
A1V (white) |
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Pri motion ra |
+009 |
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Sec motion ra |
+009 |
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Pri motion dec |
-017 |
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Sec motion dec |
-017 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 31590 |
|
Constellation |
Camelopardalis |
|
SAO |
5407 |
|
HIP |
23617 |
|
Tycho2 |
4354-00198-1 |
|
Gaia DR2 |
502542170414672128 |
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HD |
31590 |
|
HR |
1589 |
|
GC |
6121 |
|
BD |
BD+73 265 |
|
Distance |
171.23 |
|
Distance ly |
558.55 |
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ORBITAL ELEMENTS
Period (P) | 140.7y | |
Periastron (T) | 1919.08y | |
Semi-major axis (a) | 0.373a | |
Eccentricity (e) | 0.878 | |
Inclination (i) | 83.6° | |
Longitude of periastron (ω) | 50.9° | |
Node (Ω) | 111.9° | |
Notes | n | |
Reference | Alz2020c | |
Equinox | 2000 | |
Last observation | 2003 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
300.8 |
0.405 |
2001 |
300.9 |
0.400 |
2002 |
301.1 |
0.395 |
2003 |
301.2 |
0.390 |
2004 |
301.3 |
0.385 |
2005 |
301.4 |
0.380 |
2006 |
301.6 |
0.375 |
2007 |
301.7 |
0.369 |
2008 |
301.8 |
0.364 |
2009 |
302.0 |
0.358 |
2010 |
302.1 |
0.352 |
2011 |
302.3 |
0.347 |
2012 |
302.5 |
0.341 |
2013 |
302.6 |
0.334 |
2014 |
302.8 |
0.328 |
2015 |
303.0 |
0.322 |
2016 |
303.2 |
0.315 |
2017 |
303.4 |
0.309 |
2018 |
303.6 |
0.302 |
2019 |
303.8 |
0.295 |
2020 |
304.0 |
0.288 |
2021 |
304.2 |
0.281 |
2022 |
304.5 |
0.274 |
2023 |
304.7 |
0.266 |
2024 |
305.0 |
0.259 |
2025 |
305.3 |
0.251 |
2026 |
305.6 |
0.243 |
2027 |
306.0 |
0.235 |
2028 |
306.3 |
0.227 |
2029 |
306.7 |
0.219 |
2030 |
307.1 |
0.211 |
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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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