12283-1548 MEL   7

 
 
12h 28m 15.23s -15 47' 34.2" P.A. 264.5 sep 0.35 mag 20.52,21.05
 
 
Coord 2000
12283-1548
Discov num
MEL   7
Comp
Coord arcsec 2000
12 28 15.23 -15 47 34.2
Date first
1998
Date last
2003
Obs
11
Pa first
45
Pa last
357
P.A. Now (θ)
264.5°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.35"
Mag pri
20.52
Mag sec
21.05
delta mag (ΔM)
0.53
Spectral class
Pri motion ra
Sec motion ra
Pri motion dec
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
356.7
Precise sep
0.239
Cdsa2 id
MEL 7
Constellation
Corvus
Ra deg
12.470897222222222
De deg
-15.792833333333332
last precise pa
356.7
last precise sep
0.239
 
 
ORBITAL ELEMENTS
 
 
Period (P)44.2y Periastron (T)1989.22y Semi-major axis (a)0.317a
Eccentricity (e)0.21 Inclination (i)130.7° Longitude of periastron (ω)300.3°
Node (Ω)69.7° Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2003
label rho theta
2000 0.264 30.1
2001 0.256 22.4
2002 0.249 14.2
2003 0.244 5.7
2004 0.240 356.7
2005 0.240 347.7
2006 0.242 338.6
2007 0.247 329.9
2008 0.254 321.5
2009 0.263 313.7
2010 0.274 306.5
2011 0.286 299.8
2012 0.298 293.7
2013 0.310 288.1
2014 0.321 282.8
2015 0.331 277.9
2016 0.339 273.3
2017 0.345 268.8
2018 0.348 264.5
2019 0.349 260.2
2020 0.347 255.9
2021 0.342 251.5
2022 0.333 246.9
2023 0.321 242.1
2024 0.305 236.8
2025 0.286 230.8
2026 0.264 223.9
2027 0.241 215.7
2028 0.216 205.7
2029 0.193 193.2
2030 0.176 177.7

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





wds12283-1548a.png orbit plot
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
12283-1548 MEL 7 2003 16 357 0.2 20.52 21.05 D 122815.23-154734.2

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