15382+3615 STF1964CD

 
 
15H 38M 14.14S +36 14' 49.7" P.A. 19.7 SEP 1.51 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
2016
Obs
56
Pa first
10
Pa last
23
P.A. Now (θ)
19.7°
Sep first
1.4
Sep last
1.7
Sep. Now (ρ)
1.51"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 64821 15382+3615 HU 1167 AB 1905 2015 25 81 1.2 8.07 9.87 1.80 Y
Show 64821 15382+3615 STF1964 AC 1782 2016 78 87 15.1 8.07 8.06 0.01
Show 64821 15382+3615 STF1964 AD 1900 2015 15 81 15.7 8.07 9.02 0.95
Show 64821 15382+3615 STF1964 CD 1829 2016 56 20 1.5 8.06 9.02 0.96 Y <===
Show 64821 15382+3615 WAK 1 CE 1970 1970 1 82 0.1 8.07 8.20 0.13
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Corona Borealis
SAO
64821
HIP
76566
Tycho2
2577-01755-1
HD
139691
ADS
9731
Distance
27.59
Distance ly
90
last precise pa
22.5
last precise sep
1.73
 
 
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 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation1994
label rho theta
2000 1.543 18.6
2001 1.541 18.6
2002 1.539 18.7
2003 1.537 18.8
2004 1.535 18.8
2005 1.533 18.9
2006 1.531 18.9
2007 1.529 19.0
2008 1.527 19.1
2009 1.525 19.1
2010 1.523 19.2
2011 1.521 19.3
2012 1.519 19.3
2013 1.517 19.4
2014 1.514 19.5
2015 1.512 19.5
2016 1.510 19.6
2017 1.507 19.7
2018 1.505 19.7
2019 1.502 19.8
2020 1.500 19.8
2021 1.497 19.9
2022 1.495 20.0
2023 1.492 20.0
2024 1.490 20.1
2025 1.487 20.2
2026 1.484 20.2
2027 1.481 20.3
2028 1.479 20.4
2029 1.476 20.4
2030 1.473 20.5

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic