01556+0146 BU 1367

 
 
01h 55m 33.97s +01 45' 56.9" P.A. 109.40 sep 0.7 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
2001
Obs
24
Pa first
30
Pa last
89
P.A. Now (θ)
109.4°
Sep first
0.9
Sep last
0.6
Sep. Now (ρ)
0.73"
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)
Visually invisible, K-band or other infrared star This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
89.3
Precise sep
0.61
Constellation
Cetus
Tycho2
0030-00736-1
Gaia DR2
83441853824
ADS
1533
last precise pa
89.3
last precise sep
0.61
 
 
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 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2001
label rho theta
2000 0.696 92.2
2001 0.696 93.1
2002 0.697 94.0
2003 0.697 94.9
2004 0.698 95.8
2005 0.699 96.7
2006 0.700 97.5
2007 0.701 98.4
2008 0.702 99.3
2009 0.703 100.1
2010 0.705 101.0
2011 0.707 101.9
2012 0.708 102.7
2013 0.710 103.6
2014 0.712 104.4
2015 0.715 105.3
2016 0.717 106.1
2017 0.719 106.9
2018 0.722 107.8
2019 0.725 108.6
2020 0.728 109.4
2021 0.731 110.2
2022 0.734 111.0
2023 0.737 111.8
2024 0.740 112.6
2025 0.744 113.3
2026 0.747 114.1
2027 0.751 114.9
2028 0.755 115.6
2029 0.759 116.4
2030 0.763 117.1

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






wds01556%2B0146a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
01556+0146 BU 1367 2001 24 89 0.6 10.44 10.71 K2 N 015533.97+014556.9

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