13203+1746 A 2166 AB (KR Com)

 
 
13h 20m 15.78s +17° 45' 57.7" P.A. 341.00 sep 0.1 mag 7.78,8.38 Sp F8V dist. 83.96 pc (273.88 l.y.)
 
 
Coord 2000 13203+1746 Discov num A  2166 Comp AB Coord arcsec 2000 13 20 15.78 +17 45 57.7
Date first 1910 Date last 2021 Obs 54
Pa first 7 Pa last 340.5 P.A. Now (θ) 353.3°
Sep first 0.2 Sep last 0.085 Sep. Now (ρ) 0.123"
Mag pri 7.78 Mag sec 8.38 delta mag (ΔM) 0.6 Spectral class F8V (yellow-white)
Pri motion ra -005 Sec motion ra
Pri motion dec -078 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
13203+1746 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show KR Com 100517 13 20 16 +17 45 58 A 2166 AB 2021 54 341 0.1 7.78 8.38 0.60 Y <===
Show 100517 13 20 16 +17 45 58 A 2166 AC 2011 1 226 2.2 7.78
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name KR Com Constellation Coma Berenices SAO 100517 HIP 65069
Tycho2 1461-00806-1 HD 115955 GC 18041 ADS 8863
BD BD+18 2716 Distance 83.96 Distance ly 273.88
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier13203+1746 A 2166
coord_arcsec_2000132015.78+174557.7
Period (P)11.228y Periastron (T)2007.128y Semi-major axis (a)0.098a
Eccentricity (e)0.823 Inclination (i)67.8° Longitude of periastron (ω)314.9°
Node (Ω)197.9° Notesn ReferenceTok2020g
Equinox2000 Last observation2020 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 350.7 0.113
2001 355.2 0.129
2002 358.8 0.139
2003 2.2 0.142
2004 5.6 0.137
2005 9.5 0.121
2006 15.5 0.088
2007 69.6 0.010
2008 286.0 0.028
2009 329.0 0.057
2010 342.4 0.085
2011 349.5 0.109
2012 354.3 0.126
2013 358.1 0.137
2014 1.4 0.142
2015 4.8 0.139
2016 8.5 0.125
2017 13.8 0.097
2018 30.0 0.036
2019 264.0 0.025
2020 323.7 0.050
2021 340.2 0.079
2022 348.1 0.104
2023 353.3 0.123
2024 357.2 0.135
2025 0.7 0.141
2026 4.0 0.140
2027 7.6 0.130
2028 12.3 0.106
2029 22.6 0.056
2030 238.2 0.024


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



 
 


wds13203%2B1746c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic