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 Discov num STT  43 Comp Coord arcsec 2000 02 40 42.29 +26 37 20.5
Date first 1848 Date last 2018 Obs 161
Pa first 89 Pa last 342.5 P.A. Now (θ) 342.5°
Sep first 0.5 Sep last 0.646 Sep. Now (ρ) 0.646"
Mag pri 7.90 Mag sec 9.04 delta mag (ΔM) 1.14 Spectral class F7V (yellow-white)
Pri motion ra +083 Sec motion ra +083
Pri motion dec +001 Sec motion dec +001
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 16638 Constellation Aries HIP 12491 Tycho2 1776-00934-1
Gaia DR2 126757786419568384 HD 16638 ADS 2034 BD BD+25 436
Distance 64.72 Distance ly 211.12
 
 
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° Notesn ReferenceSca2001d
Equinox2000 Last observation1999 Grade4(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


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds02407%2B2637a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic