00210+6740 HJ 1018

 
 
00h 20m 57.23s +67 40' 03.0" P.A. 87.8 sep 1.76 mag 8.57,8.89 Sp G5 dist. 31.74 pc (103.54 l.y.)
 
 
Coord 2000
00210+6740
Discov num
HJ 1018
Comp
Coord arcsec 2000
00 20 57.23 +67 40 03.0
Date first
1828
Date last
2014
Obs
88
Pa first
84
Pa last
86
P.A. Now (θ)
87.8°
Sep first
1.5
Sep last
1.7
Sep. Now (ρ)
1.76"
Mag pri
8.57
Mag sec
8.89
delta mag (ΔM)
0.32
Spectral class
G5 (yellow)
Pri motion ra
+027
Sec motion ra
+027
Pri motion dec
+078
Sec motion dec
+078
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
86.2
Precise sep
1.691
Cdsa2 id
HJ 1018
Constellation
Cepheus
SAO
11124
HIP
1674
Tycho2
4294-00406-1
HD
1624
ADS
283
BD
BD+66 19
Ra deg
0.34923055555555554
De deg
67.6675
Distance
31.74
Distance ly
103.54
last precise pa
86.2
last precise sep
1.691
 
 
ORBITAL ELEMENTS
 
 
Period (P)161y Periastron (T)1941y Semi-major axis (a)1a
Eccentricity (e)0.89 Inclination (i)88° Longitude of periastron (ω)202°
Node (Ω)87° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 1.734 87.6
2001 1.739 87.6
2002 1.744 87.6
2003 1.748 87.6
2004 1.752 87.6
2005 1.756 87.6
2006 1.759 87.6
2007 1.761 87.6
2008 1.764 87.7
2009 1.765 87.7
2010 1.767 87.7
2011 1.768 87.7
2012 1.768 87.7
2013 1.768 87.7
2014 1.768 87.7
2015 1.767 87.7
2016 1.766 87.7
2017 1.764 87.8
2018 1.762 87.8
2019 1.760 87.8
2020 1.757 87.8
2021 1.754 87.8
2022 1.751 87.8
2023 1.747 87.8
2024 1.743 87.8
2025 1.738 87.8
2026 1.733 87.9
2027 1.727 87.9
2028 1.721 87.9
2029 1.715 87.9
2030 1.708 87.9

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

grafico orbita





wds00210%2B6740a.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
00210+6740 HJ 1018 2006 87 88 1.6 8.57 8.89 G5 NOD 002057.23+674003.0
00210+6740 HJ 1018 2009 88 89 1.8 8.57 8.89 G5 NOD 002057.23+674003.0
00210+6740 HJ 1018 2014 88 86 1.7 8.57 8.89 G5 NO 002057.23+674003.0

If you need more information about this double, apply for a data request form to the WDS.