00428+1249 HDS  93

 
 
00H 42M 47.92S +12 48' 41.8" P.A. 17.1 SEP 0.25 MAG 10.78,12.02 DIST. 75.64 PC (246.74 L.Y.)
 
 
Coord 2000
00428+1249
Discov num
HDS  93
Comp
Coord arcsec 2000
00 42 47.92 +12 48 41.8
Date first
1991
Date last
2015
Obs
12
Pa first
160
Pa last
29
P.A. Now (θ)
17.1°
Sep first
0.2
Sep last
0.3
Sep. Now (ρ)
0.25"
Mag pri
10.78
Mag sec
12.02
delta mag (ΔM)
1.24
Spectral class
Pri motion ra
+193
Sec motion ra
Pri motion dec
-077
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Pisces
HIP
3361
Tycho2
0610-00266-1
BD
BD+12 81
Distance
75.64
Distance ly
246.74
last precise pa
29.2
last precise sep
0.305
 
 
ORBITAL ELEMENTS
 
 
Period (P)94.28y Periastron (T)2006.69y Semi-major axis (a)0.339a
Eccentricity (e)0.226 Inclination (i)134.5° Longitude of periastron (ω)343.6°
Node (Ω)50.7° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2007
label rho theta
2000 0.220 97.6
2001 0.226 91.5
2002 0.232 85.8
2003 0.238 80.4
2004 0.244 75.2
2005 0.249 70.3
2006 0.254 65.5
2007 0.258 61.0
2008 0.261 56.5
2009 0.264 52.2
2010 0.265 47.9
2011 0.265 43.6
2012 0.265 39.4
2013 0.263 35.1
2014 0.261 30.7
2015 0.258 26.3
2016 0.255 21.8
2017 0.252 17.1
2018 0.248 12.3
2019 0.245 7.4
2020 0.241 2.3
2021 0.239 357.1
2022 0.236 351.8
2023 0.235 346.4
2024 0.234 340.9
2025 0.235 335.5
2026 0.236 330.1
2027 0.238 324.8
2028 0.242 319.6
2029 0.246 314.5
2030 0.251 309.7

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