01556+0146 BU 1367

 
 
01h 55m 33.97s +01° 45' 56.9" P.A. 97.00 sep 0.8 mag 10.44,10.71 Sp K2
 
 
Coord 2000 01556+0146 Discov num BU 1367 Comp Coord arcsec 2000 01 55 33.97 +01 45 56.9
Date first 1904 Date last 2016 Obs 25
Pa first 30 Pa last 96.5 P.A. Now (θ) 96.5°
Sep first 0.9 Sep last 0.752 Sep. Now (ρ) 0.752"
Mag pri 10.44 Mag sec 10.71 delta mag (ΔM) 0.27 Spectral class K2 (yellow-orange)
Pri motion ra -002 Sec motion ra -002
Pri motion dec -017 Sec motion dec -017
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cetus Tycho2 0030-00736-1 Gaia DR2 2511412483441853824 ADS 1533
 
 
ORBITAL ELEMENTS
 
 
Period (P)882.5951y± 507.1726 Periastron (T)1884.0678y± 31.8613 Semi-major axis (a)3.7532a± 2.38687
Eccentricity (e)0.88304± 0.12481 Inclination (i)80.859°± 10.007 Longitude of periastron (ω)291.812°± 27.663
Node (Ω)19.732°± 10.395 Notesn ReferenceIzm2019
Equinox Last observation2001 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 92.2 0.696
2001 93.1 0.696
2002 94.0 0.697
2003 94.9 0.697
2004 95.8 0.698
2005 96.7 0.699
2006 97.5 0.700
2007 98.4 0.701
2008 99.3 0.702
2009 100.1 0.703
2010 101.0 0.705
2011 101.9 0.707
2012 102.7 0.708
2013 103.6 0.710
2014 104.4 0.712
2015 105.3 0.715
2016 106.1 0.717
2017 106.9 0.719
2018 107.8 0.722
2019 108.6 0.725
2020 109.4 0.728
2021 110.2 0.731
2022 111.0 0.734
2023 111.8 0.737
2024 112.6 0.740
2025 113.3 0.744
2026 114.1 0.747
2027 114.9 0.751
2028 115.6 0.755
2029 116.4 0.759
2030 117.1 0.763


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



 
 


wds01556%2B0146a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic