02423+4925 HU  539

 
 
02H 42M 19.72S +49 24' 58.5" P.A. 165.4 SEP 0.12 MAG 9.22,9.52 SP F5 DIST. 238.66 PC (778.51 L.Y.)
 
 
Coord 2000
02423+4925
Discov num
HU  539
Comp
Coord arcsec 2000
02 42 19.72 +49 24 58.5
Date first
1902
Date last
1995
Obs
30
Pa first
81
Pa last
358
P.A. Now (θ)
165.4°
Sep first
0.3
Sep last
0.1
Sep. Now (ρ)
0.12"
Mag pri
9.22
Mag sec
9.52
delta mag (ΔM)
0.3
Spectral class
F5 (yellow-white)
Pri motion ra
+028
Sec motion ra
Pri motion dec
-012
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Perseus
SAO
38249
HIP
12632
Tycho2
3304-00739-1
HD
16692
ADS
2051
BD
BD+48 737
Distance
238.66
Distance ly
778.51
last precise pa
357.8
last precise sep
0.135
 
 
ORBITAL ELEMENTS
 
 
Period (P)175y Periastron (T)2007.1y Semi-major axis (a)0.222a
Eccentricity (e)0.684 Inclination (i)144.1° Longitude of periastron (ω)124.7°
Node (Ω)19.4° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation1995
label rho theta
2000 0.095 340.1
2001 0.086 332.9
2002 0.078 324.0
2003 0.070 313.0
2004 0.064 299.7
2005 0.060 284.0
2006 0.059 267.1
2007 0.061 250.5
2008 0.065 235.4
2009 0.071 222.4
2010 0.077 211.4
2011 0.083 202.0
2012 0.089 193.9
2013 0.095 186.9
2014 0.101 180.6
2015 0.106 175.0
2016 0.111 170.0
2017 0.117 165.4
2018 0.122 161.2
2019 0.126 157.3
2020 0.131 153.6
2021 0.136 150.3
2022 0.140 147.1
2023 0.145 144.2
2024 0.149 141.4
2025 0.154 138.8
2026 0.158 136.3
2027 0.162 134.0
2028 0.166 131.8
2029 0.171 129.7
2030 0.175 127.7

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