02159+0638 A  2013

 
 
02H 15M 53.38S +06 37' 34.9" P.A. 129.1 SEP 0.28 MAG 9.84,9.79 SP K2 DIST. 35.93 PC (117.2 L.Y.)
 
 
Coord 2000
02159+0638
Discov num
A  2013
Comp
Coord arcsec 2000
02 15 53.38 +06 37 34.9
Date first
1909
Date last
2010
Obs
61
Pa first
146
Pa last
203
P.A. Now (θ)
129.1°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.28"
Mag pri
9.84
Mag sec
9.79
delta mag (ΔM)
0.05
Spectral class
K2 (yellow-orange)
Pri motion ra
-111
Sec motion ra
-111
Pri motion dec
-056
Sec motion dec
-056
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cetus
HIP
10552
Tycho2
0044-01047-1
HD
13959
ADS
1729
BD
BD+05 307
Distance
35.93
Distance ly
117.2
last precise pa
202.5
last precise sep
0.144
 
 
ORBITAL ELEMENTS
 
 
Period (P)34.66y± 0.15 Periastron (T)2005.69y± 0.2 Semi-major axis (a)0.346a± 0.002
Eccentricity (e)0.593± 0.01 Inclination (i)112.3°± 2 Longitude of periastron (ω)137.6°± 3
Node (Ω)91.8°± 2 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2004
label rho theta
2000 0.353 88.4
2001 0.306 84.9
2002 0.248 80.0
2003 0.176 71.3
2004 0.096 49.0
2005 0.066 328.1
2006 0.130 282.7
2007 0.165 265.8
2008 0.166 252.3
2009 0.153 237.4
2010 0.140 219.5
2011 0.135 199.1
2012 0.144 179.3
2013 0.163 162.9
2014 0.190 150.5
2015 0.219 141.4
2016 0.251 134.5
2017 0.281 129.1
2018 0.311 124.8
2019 0.340 121.2
2020 0.366 118.1
2021 0.390 115.5
2022 0.412 113.1
2023 0.430 111.0
2024 0.446 109.0
2025 0.459 107.1
2026 0.468 105.4
2027 0.474 103.6
2028 0.476 102.0
2029 0.473 100.3
2030 0.466 98.6

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