03125+1857 HDS 408

 
 
03h 12m 32.90s +18 56' 37.1" P.A. 342 sep 0.1 mag 9.14,9.45 Sp G5 dist. 94.34 pc (307.74 l.y.)
 
 
Coord 2000
03125+1857
Discov num
HDS 408
Comp
Coord arcsec 2000
03 12 32.90 +18 56 37.1
Date first
1991
Date last
2012
Obs
11
Pa first
163
Pa last
342
P.A. Now (θ)
342°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
9.14
Mag sec
9.45
delta mag (ΔM)
0.31
Spectral class
G5 (yellow)
Pri motion ra
+012
Sec motion ra
Pri motion dec
-023
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Aries
SAO
93336
HIP
14929
Tycho2
1240-00868-1
HD
19895
BD
BD+18 430
Distance
94.34
Distance ly
307.74
last precise pa
342
last precise sep
0.079
 
 
ORBITAL ELEMENTS
 
 
Period (P)19.414y± 0.209 Periastron (T)2007.132y± 0.198 Semi-major axis (a)0.1004a± 0.0022
Eccentricity (e)0.032± 0.009 Inclination (i)101.7°± 0.3 Longitude of periastron (ω)126.2°± 24.1
Node (Ω)171.4°± 0.3 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000 0.101 173.2
2001 0.101 169.5
2002 0.090 165.4
2003 0.071 159.5
2004 0.046 147.9
2005 0.022 107.8
2006 0.030 30.8
2007 0.056 8.4
2008 0.079 360.0
2009 0.094 354.9
2010 0.098 350.9
2011 0.093 346.8
2012 0.078 341.7
2013 0.056 333.1
2014 0.031 311.4
2015 0.022 242.0
2016 0.043 198.5
2017 0.067 185.5
2018 0.087 179.1
2019 0.099 174.7
2020 0.102 171.0
2021 0.095 167.2
2022 0.080 162.3
2023 0.057 154.0
2024 0.030 131.8
2025 0.022 55.2
2026 0.045 14.5
2027 0.070 2.8
2028 0.089 356.8
2029 0.098 352.5
2030 0.096 348.6

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
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
03125+1857 HDS 408 1999 3 176 0.1 9.14 9.45 G5 D 031232.90+185637.1
03125+1857 HDS 408 2004 4 122 0.0 9.14 9.45 G5 D 031232.90+185637.1
03125+1857 HDS 408 2008 5 355 0.1 9.14 9.45 G5 D 031232.90+185637.1
03125+1857 HDS 408 2012 11 342 0.1 9.14 9.45 G5 031232.90+185637.1

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