13327+2230 HDS1898

 
 
13H 32M 41.78S +22 30' 07.3" P.A. 180.5 SEP 0.18 MAG 10.33,10.84 DIST. 46.06 PC (150.25 L.Y.)
 
 
Coord 2000
13327+2230
Discov num
HDS1898
Comp
Coord arcsec 2000
13 32 41.78 +22 30 07.3
Date first
1991
Date last
2011
Obs
7
Pa first
201
Pa last
135
P.A. Now (θ)
180.5°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.18"
Mag pri
10.33
Mag sec
10.84
delta mag (ΔM)
0.51
Spectral class
Pri motion ra
-133
Sec motion ra
Pri motion dec
-072
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Coma Berenices
HIP
66072
Tycho2
1997-00297-1
BD
BD+23 2581
Distance
46.06
Distance ly
150.25
last precise pa
135.3
last precise sep
0.154
 
 
ORBITAL ELEMENTS
 
 
Period (P)30.87y Periastron (T)1998.89y Semi-major axis (a)0.245a
Eccentricity (e)0.718 Inclination (i)67.8° Longitude of periastron (ω)93°
Node (Ω)238.3° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000 0.107 56.3
2001 0.147 67.5
2002 0.166 75.0
2003 0.175 81.2
2004 0.178 87.1
2005 0.178 92.9
2006 0.176 98.8
2007 0.172 104.9
2008 0.168 111.2
2009 0.165 117.8
2010 0.162 124.7
2011 0.159 131.9
2012 0.158 139.2
2013 0.158 146.6
2014 0.160 153.9
2015 0.162 161.0
2016 0.166 167.8
2017 0.170 174.3
2018 0.176 180.5
2019 0.181 186.3
2020 0.186 191.8
2021 0.191 196.9
2022 0.195 201.9
2023 0.197 206.6
2024 0.198 211.3
2025 0.194 216.1
2026 0.186 221.2
2027 0.169 227.0
2028 0.139 234.6
2029 0.081 250.1
2030 0.040 21.6

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