15183+2650 CHR 45 Aa,Ab

 
 
15h 18m 20.19s +26° 50' 24.7" P.A. 66.00 sep 0.3 mag 7.10, Sp G0V dist. 35.98 pc (117.37 l.y.)
 
 
Coord 2000 15183+2650 Discov num CHR  45 Comp Aa,Ab Coord arcsec 2000 15 18 20.19 +26 50 24.7
Date first 1984 Date last 1984 Obs 1
Pa first 66 Pa last 65.5 P.A. Now (θ) 65.5°
Sep first 0.3 Sep last 0.339 Sep. Now (ρ) 0.339"
Mag pri 7.10 Mag sec delta mag (ΔM) Spectral class G0V (yellow)
Pri motion ra +090 Sec motion ra
Pri motion dec +070 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
15183+2650 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 83756 15 18 20 +26 50 25 CHR 45 Aa,Ab 1984 1 66 0.3 7.10 <===
Show HD 136176 83756 15 18 20 +26 50 25 STF 1932 AB 2019 601 267 1.6 7.32 7.41 0.09 Y
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Corona Borealis SAO 83756 HIP 74893 Tycho2 2028-00978-1
Gaia DR2 1271209615518148736 HD 136176 BD BD+27 2477 Distance 35.98
Distance ly 117.37
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier15183+2650 STF1932 B
coord_arcsec_2000151820.25+265025.3
Period (P)50y Periastron (T)1895y Semi-major axis (a)0.055a
Eccentricity (e)0.7 Inclination (i)90° Longitude of periastron (ω)243.5°
Node (Ω)135° Notesn ReferenceMlr1952d
Equinox Last observation1950 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000 135.0 0.045
2001 135.0 0.049
2002 135.0 0.053
2003 135.0 0.055
2004 135.0 0.057
2005 135.0 0.059
2006 135.0 0.059
2007 135.0 0.060
2008 135.0 0.060
2009 135.0 0.060
2010 135.0 0.059
2011 135.0 0.058
2012 135.0 0.057
2013 135.0 0.056
2014 135.0 0.055
2015 135.0 0.053
2016 135.0 0.051
2017 135.0 0.049
2018 135.0 0.047
2019 135.0 0.044
2020 135.0 0.042
2021 135.0 0.039
2022 135.0 0.036
2023 135.0 0.033
2024 135.0 0.030
2025 135.0 0.027
2026 135.0 0.024
2027 135.0 0.021
2028 135.0 0.017
2029 135.0 0.014
2030 135.0 0.010


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



 
 


wds15183%2B2650r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic