12283-1548 MEL 7

 
 
12h 28m 15.23s -15° 47' 34.2" P.A. 279.00 sep 0.3 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 2013 Obs 20
Pa first 45 Pa last 279.4 P.A. Now (θ) 279.4°
Sep first 0.3 Sep last 0.274 Sep. Now (ρ) 0.274"
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
 
 
Constellation Corvus
 
 
ORBITAL ELEMENTS
 
 
Period (P)47y± 7 Periastron (T)83000d (2086.122y)± 8000 Semi-major axis (a)297m± 11
Eccentricity (e)0.075± 0.035 Inclination (i)140°± 4 Longitude of periastron (ω)-30°± 50
Node (Ω)60.4°± 2.5 Notes ReferenceDup2017
Equinox Last observation2013 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 29.4 0.264
2001 21.8 0.257
2002 13.7 0.250
2003 5.3 0.244
2004 356.4 0.239
2005 347.2 0.235
2006 337.8 0.234
2007 328.4 0.236
2008 319.3 0.239
2009 310.4 0.245
2010 302.1 0.253
2011 294.3 0.261
2012 287.0 0.271
2013 280.2 0.280
2014 273.8 0.289
2015 267.8 0.298
2016 262.1 0.305
2017 256.7 0.310
2018 251.4 0.314
2019 246.2 0.316
2020 241.1 0.316
2021 235.9 0.314
2022 230.6 0.309
2023 225.1 0.303
2024 219.3 0.295
2025 213.1 0.285
2026 206.5 0.274
2027 199.4 0.263
2028 191.5 0.251
2029 183.0 0.240
2030 173.6 0.230


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



 
 


wds12283-1548b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic