13169+1701 BU 800 AB (HD 115404)

 
 
13h 16m 51.05s +17° 01' 01.9" P.A. 104.00 sep 7.7 mag 6.66,9.50 Sp K1V+M1V dist. 11.07 pc (36.11 l.y.)
 
 
Coord 2000 13169+1701 Discov num BU  800 Comp AB Coord arcsec 2000 13 16 51.05 +17 01 01.9
Date first 1881 Date last 2020 Obs 214
Pa first 122 Pa last 104.1 P.A. Now (θ) 104.1°
Sep first 1.3 Sep last 7.65 Sep. Now (ρ) 7.65"
Mag pri 6.66 Mag sec 9.50 delta mag (ΔM) 2.84 Spectral class K1V+M1V (yellow-orange/red)
Pri motion ra +631 Sec motion ra +631
Pri motion dec -261 Sec motion dec -261
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
13169+1701 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 115404 100491 13 16 51 +17 01 02 BU 800 AB 2020 214 104 7.7 6.66 9.50 2.84 Y <===
Show 100491 13 16 51 +17 01 02 BU 800 AC 2015 10 334 128.2 6.66 12.60 5.94
Show 100491 13 16 51 +17 01 02 BU 800 AD 2015 6 74 35.2 6.66 13.30 6.64
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 115404 Constellation Coma Berenices SAO 100491 HIP 64797
Tycho2 1451-01151-1 HD 115404 GC 17981 ADS 8841
GL Gl 505A BD BD+17 2611 Distance 11.07 Distance ly 36.11
 
 
ORBITAL ELEMENTS
 
 
Period (P)607.2223y± 220.7846 Periastron (T)1819.455y± 26.8889 Semi-major axis (a)6.36385a± 1.12646
Eccentricity (e)0.31334± 0.12475 Inclination (i)94.417°± 0.548 Longitude of periastron (ω)217.465°± 48.581
Node (Ω)104.659°± 0.665 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 105.1 7.386
2001 105.1 7.407
2002 105.1 7.426
2003 105.0 7.445
2004 105.0 7.464
2005 105.0 7.483
2006 104.9 7.500
2007 104.9 7.518
2008 104.9 7.534
2009 104.8 7.551
2010 104.8 7.567
2011 104.8 7.582
2012 104.8 7.597
2013 104.7 7.611
2014 104.7 7.625
2015 104.7 7.639
2016 104.6 7.652
2017 104.6 7.664
2018 104.6 7.676
2019 104.5 7.688
2020 104.5 7.699
2021 104.5 7.710
2022 104.5 7.720
2023 104.4 7.729
2024 104.4 7.739
2025 104.4 7.748
2026 104.3 7.756
2027 104.3 7.764
2028 104.3 7.771
2029 104.2 7.778
2030 104.2 7.785


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



 
 


wds13169%2B1701b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic