02087-1005 HU   16

 
 
02h 08m 42.29s -10 05' 18.9" P.A. 35.9 sep 0.89 mag 9.30,10.53 Sp G5
 
 
Coord 2000
02087-1005
Discov num
HU   16
Comp
Coord arcsec 2000
02 08 42.29 -10 05 18.9
Date first
1899
Date last
2017
Obs
21
Pa first
329
Pa last
35
P.A. Now (θ)
35.9°
Sep first
1.1
Sep last
0.9
Sep. Now (ρ)
0.89"
Mag pri
9.30
Mag sec
10.53
delta mag (ΔM)
1.23
Spectral class
G5 (yellow)
Pri motion ra
+152
Sec motion ra
+152
Pri motion dec
-016
Sec motion dec
-016
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
35.4
Precise sep
0.892
Cdsa2 id
HU 16
Constellation
Cetus
Tycho2
5281-02156-1
HD
13191
ADS
1674
Ra deg
2.1450805555555554
De deg
-10.088583333333334
last precise pa
35.4
last precise sep
0.892
 
 
ORBITAL ELEMENTS
 
 
Period (P)485y Periastron (T)1929.62y Semi-major axis (a)1.173a
Eccentricity (e)0 Inclination (i)45.4° Longitude of periastron (ω)
Node (Ω)338.8° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 0.969 21.0
2001 0.965 21.8
2002 0.960 22.5
2003 0.956 23.3
2004 0.952 24.1
2005 0.947 24.9
2006 0.943 25.7
2007 0.938 26.5
2008 0.934 27.3
2009 0.930 28.2
2010 0.925 29.0
2011 0.921 29.8
2012 0.917 30.7
2013 0.913 31.5
2014 0.909 32.4
2015 0.905 33.3
2016 0.901 34.2
2017 0.897 35.0
2018 0.893 35.9
2019 0.889 36.8
2020 0.885 37.8
2021 0.882 38.7
2022 0.878 39.6
2023 0.875 40.5
2024 0.872 41.5
2025 0.868 42.4
2026 0.865 43.4
2027 0.862 44.3
2028 0.859 45.3
2029 0.856 46.3
2030 0.853 47.3

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

grafico orbita





wds02087-1005e.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
02087-1005 HU 16 1997 18 29 1.1 9.30 10.53 G5 O 020842.29-100518.9
02087-1005 HU 16 2008 19 28 0.9 9.30 10.53 G5 O 020842.29-100518.9
02087-1005 HU 16 2013 20 32 0.9 9.30 10.53 G5 O 020842.29-100518.9
02087-1005 HU 16 2017 21 35 0.9 9.30 10.53 G5 O 020842.29-100518.9

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