15382+3615 STF 1964 CD

 
 
15h 38m 14.14s +36° 14' 49.7" P.A. 21.00 sep 1.5 mag 8.06,9.02 Sp F5 dist. 27.59 pc (90 l.y.)
 
 
Coord 2000 15382+3615 Discov num STF1964 Comp CD Coord arcsec 2000 15 38 14.14 +36 14 49.7
Date first 1829 Date last 2019 Obs 69
Pa first 10 Pa last 20.9 P.A. Now (θ) 20.9°
Sep first 1.4 Sep last 1.489 Sep. Now (ρ) 1.489"
Mag pri 8.06 Mag sec 9.02 delta mag (ΔM) 0.96 Spectral class F5 (yellow-white)
Pri motion ra -062 Sec motion ra -062
Pri motion dec +043 Sec motion dec +043
Notes N O W (See Notes, Orbital solution, )
This double is physical.
 
 
15382+3615 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 139691 15 38 13 +36 14 49 HU 1167 AB 2016 26 80 1.4 8.07 9.87 1.80 Y
Show 64821 15 38 13 +36 14 49 STF 1964 AC 2017 82 90 14.5 8.07 8.06 0.01
Show 15 38 13 +36 14 49 STF 1964 AD 2018 19 83 15.1 8.07 9.02 0.95
Show 64821 15 38 14 +36 14 50 STF 1964 CD 2019 69 21 1.5 8.06 9.02 0.96 Y <===
Show 64821 15 38 14 +36 14 50 WAK 1 CE 2011 5 82 0.2 8.07 8.20 0.13
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Corona Borealis SAO 64821 HIP 76566 Tycho2 2577-01755-1
Gaia DR2 1374656960858803072 HD 139691 GC 21037 ADS 9731
BD BD+36 2626 Distance 27.59 Distance ly 90
 
 
ORBITAL ELEMENTS
 
 
Period (P)1230y± 261 Periastron (T)1955.3y± 21.3 Semi-major axis (a)1.582a± 0.027
Eccentricity (e)0 Inclination (i)78.4°± 3.8 Longitude of periastron (ω)
Node (Ω)15.9°± 1.6 Notesn ReferenceDru1995
Equinox Last observation1994 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 18.6 1.543
2001 18.6 1.541
2002 18.7 1.539
2003 18.8 1.537
2004 18.8 1.535
2005 18.9 1.533
2006 18.9 1.531
2007 19.0 1.529
2008 19.1 1.527
2009 19.1 1.525
2010 19.2 1.523
2011 19.3 1.521
2012 19.3 1.519
2013 19.4 1.517
2014 19.5 1.514
2015 19.5 1.512
2016 19.6 1.510
2017 19.7 1.507
2018 19.7 1.505
2019 19.8 1.502
2020 19.8 1.500
2021 19.9 1.497
2022 20.0 1.495
2023 20.0 1.492
2024 20.1 1.490
2025 20.2 1.487
2026 20.2 1.484
2027 20.3 1.481
2028 20.4 1.479
2029 20.4 1.476
2030 20.5 1.473


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



 
 


wds15382%2B3615b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic