11017+3641 HDS 1574 Aa,Ab

 
 
11h 01m 45.73s +36° 40' 41.6" P.A. 99.00 sep 0.3 mag 7.58,11.06 Sp F0 dist. 74.74 pc (243.8 l.y.)
 
 
Coord 2000 11017+3641 Discov num HDS1574 Comp Aa,Ab Coord arcsec 2000 11 01 45.73 +36 40 41.6
Date first 1991 Date last 2019 Obs 13
Pa first 358 Pa last 98.8 P.A. Now (θ) 98.8°
Sep first 0.4 Sep last 0.28 Sep. Now (ρ) 0.28"
Mag pri 7.58 Mag sec 11.06 delta mag (ΔM) 3.48 Spectral class F0 (yellow-white)
Pri motion ra -006 Sec motion ra
Pri motion dec +055 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
11017+3641 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 62360 11 01 46 +36 40 42 HDS 1574 Aa,Ab 2019 13 99 0.3 7.58 11.06 3.48 Y <===
Show HD 95485 62360 11 01 46 +36 40 42 UC 2059 AB 2015 11 46 46.6 7.49 10.70 3.21
Show 11 01 49 +36 41 15 COU 1422 Ba,Bb 2016 7 47 0.7 11.20 11.50 0.30 Y
Quadruple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Ursa Major SAO 62360 HIP 53903 Tycho2 2521-01070-1
Gaia DR2 763088080725986304 HD 95485 BD BD+37 2145 Distance 74.74
Distance ly 243.8
 
 
ORBITAL ELEMENTS
 
 
Period (P)46.22y± 2.57 Periastron (T)2013.14y± 0.98 Semi-major axis (a)0.235a± 0.011
Eccentricity (e)0.795± 0.03 Inclination (i)116.4°± 3.2 Longitude of periastron (ω)337.5°± 14.3
Node (Ω)169.6°± 5.8 Notes ReferenceTok2019e
Equinox2000 Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 352.5 0.365
2001 351.6 0.353
2002 350.6 0.340
2003 349.6 0.325
2004 348.4 0.308
2005 347.1 0.288
2006 345.6 0.266
2007 343.8 0.241
2008 341.5 0.212
2009 338.5 0.179
2010 333.8 0.140
2011 325.1 0.094
2012 296.7 0.043
2013 188.8 0.041
2014 140.9 0.051
2015 92.9 0.051
2016 58.9 0.070
2017 41.8 0.097
2018 32.3 0.126
2019 26.2 0.153
2020 22.0 0.178
2021 18.8 0.203
2022 16.2 0.225
2023 14.2 0.246
2024 12.4 0.265
2025 10.8 0.283
2026 9.5 0.300
2027 8.2 0.315
2028 7.1 0.329
2029 6.1 0.341
2030 5.1 0.353


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



 
 


wds11017%2B3641a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic