13482+2248 COU 401 (HD 120280)

 
 
13h 48m 09.21s +22° 48' 06.0" P.A. 7.00 sep 0.3 mag 9.50,10.60 Sp G0+G8 dist. 167.5 pc (546.38 l.y.)
 
 
Coord 2000 13482+2248 Discov num COU 401 Comp Coord arcsec 2000 13 48 09.21 +22 48 06.0
Date first 1969 Date last 2017 Obs 13
Pa first 45 Pa last 6.7 P.A. Now (θ) 6.7°
Sep first 0.2 Sep last 0.331 Sep. Now (ρ) 0.331"
Mag pri 9.50 Mag sec 10.60 delta mag (ΔM) 1.1 Spectral class G0+G8 (yellow/yellow)
Pri motion ra -014 Sec motion ra
Pri motion dec +014 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 120280 Constellation Bootes SAO 82998 HIP 67342
Tycho2 1999-00276-1 Gaia DR2 1251360613138794880 HD 120280 BD BD+23 2615
Distance 167.5 Distance ly 546.38
 
 
ORBITAL ELEMENTS
 
 
Period (P)98.7y± 1 Periastron (T)2007.42y± 0.02 Semi-major axis (a)0.401a± 0.005
Eccentricity (e)0.7± 0.01 Inclination (i)76.8°± 2 Longitude of periastron (ω)70.9°± 5
Node (Ω)165.4°± 3 Notesn ReferenceDoc2010h
Equinox2000 Last observation2007 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 154.6 0.213
2001 156.7 0.209
2002 159.0 0.202
2003 161.5 0.191
2004 164.3 0.174
2005 168.0 0.148
2006 173.6 0.113
2007 186.1 0.067
2008 244.5 0.028
2009 317.4 0.060
2010 331.8 0.109
2011 337.5 0.154
2012 340.7 0.192
2013 342.9 0.224
2014 344.6 0.252
2015 346.0 0.276
2016 347.2 0.296
2017 348.2 0.314
2018 349.1 0.329
2019 350.0 0.342
2020 350.8 0.354
2021 351.5 0.364
2022 352.2 0.372
2023 352.9 0.379
2024 353.5 0.385
2025 354.2 0.390
2026 354.8 0.394
2027 355.4 0.397
2028 356.0 0.399
2029 356.6 0.400
2030 357.2 0.401


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



 
 


wds13482%2B2248b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic