02407+2637 STT 43 (HD 16638)
02h 40m 42.29s +26° 37' 20.5" P.A. 343.00 sep 0.6 mag 7.90,9.04 Sp F7V dist. 64.72 pc (211.12 l.y.)
Coord 2000 |
02407+2637 |
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Discov num |
STT 43 |
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Comp |
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Coord arcsec 2000 |
02 40 42.29 +26 37 20.5 |
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Date first |
1848 |
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Date last |
2018 |
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Obs |
161 |
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Pa first |
89 |
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Pa last |
342.5 |
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P.A. Now (θ) |
342.5° |
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Sep first |
0.5 |
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Sep last |
0.646 |
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Sep. Now (ρ) |
0.646" |
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Mag pri |
7.90 |
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Mag sec |
9.04 |
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delta mag (ΔM) |
1.14 |
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Spectral class |
F7V (yellow-white) |
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Pri motion ra |
+083 |
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Sec motion ra |
+083 |
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Pri motion dec |
+001 |
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Sec motion dec |
+001 |
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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 16638 |
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Constellation |
Aries |
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HIP |
12491 |
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Tycho2 |
1776-00934-1 |
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Gaia DR2 |
126757786419568384 |
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HD |
16638 |
|
ADS |
2034 |
|
BD |
BD+25 436 |
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Distance |
64.72 |
|
Distance ly |
211.12 |
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ORBITAL ELEMENTS
Period (P) | 289.2y | |
Periastron (T) | 1804.422y | |
Semi-major axis (a) | 0.886a | |
Eccentricity (e) | 0.324 | |
Inclination (i) | 124.2° | |
Longitude of periastron (ω) | 203.8° | |
Node (Ω) | 39° | |
Notes | n | |
Reference | Sca2001d | |
Equinox | 2000 | |
Last observation | 1999 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
354.6 |
0.747 |
2001 |
353.6 |
0.738 |
2002 |
352.7 |
0.729 |
2003 |
351.7 |
0.720 |
2004 |
350.7 |
0.711 |
2005 |
349.6 |
0.702 |
2006 |
348.6 |
0.693 |
2007 |
347.5 |
0.684 |
2008 |
346.3 |
0.675 |
2009 |
345.2 |
0.666 |
2010 |
344.0 |
0.658 |
2011 |
342.8 |
0.649 |
2012 |
341.5 |
0.641 |
2013 |
340.2 |
0.632 |
2014 |
338.9 |
0.624 |
2015 |
337.6 |
0.616 |
2016 |
336.2 |
0.608 |
2017 |
334.8 |
0.600 |
2018 |
333.3 |
0.592 |
2019 |
331.8 |
0.585 |
2020 |
330.3 |
0.578 |
2021 |
328.7 |
0.571 |
2022 |
327.1 |
0.564 |
2023 |
325.4 |
0.557 |
2024 |
323.7 |
0.551 |
2025 |
322.0 |
0.545 |
2026 |
320.2 |
0.539 |
2027 |
318.4 |
0.534 |
2028 |
316.6 |
0.529 |
2029 |
314.7 |
0.524 |
2030 |
312.8 |
0.520 |
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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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