02512+0141 A  2338

 
 
02H 51M 11.57S +01 40' 49.5" P.A. 19.1 SEP 0.17 MAG 9.90,10.60 SP F5 DIST. 131.41 PC (428.66 L.Y.)
 
 
Coord 2000
02512+0141
Discov num
A  2338
Comp
Coord arcsec 2000
02 51 11.57 +01 40 49.5
Date first
1911
Date last
2015
Obs
16
Pa first
107
Pa last
15
P.A. Now (θ)
19.1°
Sep first
0.5
Sep last
0.2
Sep. Now (ρ)
0.17"
Mag pri
9.90
Mag sec
10.60
delta mag (ΔM)
0.7
Spectral class
F5 (yellow-white)
Pri motion ra
+006
Sec motion ra
Pri motion dec
-010
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cetus
HIP
13302
Tycho2
0048-00276-1
ADS
2177
BD
BD+01 501
Distance
131.41
Distance ly
428.66
last precise pa
15
last precise sep
0.157
 
 
ORBITAL ELEMENTS
 
 
Period (P)180y Periastron (T)2005.98y Semi-major axis (a)0.308a
Eccentricity (e)0.736 Inclination (i)38.3° Longitude of periastron (ω)119.3°
Node (Ω)157.3° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2015
label rho theta
2000 0.120 187.6
2001 0.106 195.6
2002 0.092 206.1
2003 0.079 220.0
2004 0.070 238.4
2005 0.066 260.7
2006 0.069 283.3
2007 0.076 302.8
2008 0.086 318.2
2009 0.097 330.4
2010 0.107 340.1
2011 0.117 348.2
2012 0.126 355.1
2013 0.134 1.0
2014 0.143 6.3
2015 0.150 11.0
2016 0.158 15.2
2017 0.165 19.1
2018 0.172 22.6
2019 0.179 25.9
2020 0.186 28.9
2021 0.193 31.7
2022 0.199 34.3
2023 0.205 36.8
2024 0.211 39.1
2025 0.217 41.3
2026 0.223 43.4
2027 0.229 45.3
2028 0.235 47.2
2029 0.241 49.0
2030 0.246 50.7

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