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
 
 
Constellation
Cepheus
SAO
11124
HIP
1674
Tycho2
4294-00406-1
HD
1624
ADS
283
BD
BD+66 19
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





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic