19169+6312 STF2509

 
 
19h 16m 53.09s +63 12' 27.0" P.A. 328.4 sep 1.85 mag 7.44,8.17 Sp F6V dist. 78.25 pc (255.25 l.y.)
 
 
Coord 2000
19169+6312
Discov num
STF2509
Comp
Coord arcsec 2000
19 16 53.09 +63 12 27.0
Date first
1831
Date last
2016
Obs
117
Pa first
351
Pa last
328
P.A. Now (θ)
328.4°
Sep first
0.5
Sep last
1.9
Sep. Now (ρ)
1.85"
Mag pri
7.44
Mag sec
8.17
delta mag (ΔM)
0.73
Spectral class
F6V (yellow-white)
Pri motion ra
+028
Sec motion ra
+028
Pri motion dec
-021
Sec motion dec
-021
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
327.9
Precise sep
1.887
Cdsa2 id
STF 2509
Constellation
Draco
HIP
94760
Tycho2
4221-00314-1
HD
181566
ADS
12296
Ra deg
19.28141388888889
De deg
63.2075
Distance
78.25
Distance ly
255.25
last precise pa
327.9
last precise sep
1.887
 
 
ORBITAL ELEMENTS
 
 
Period (P)627y Periastron (T)1737y Semi-major axis (a)1.345a
Eccentricity (e)0.75 Inclination (i)101.2° Longitude of periastron (ω)325.4°
Node (Ω)139.6° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2011
label rho theta
2000 1.771 329.2
2001 1.775 329.1
2002 1.780 329.1
2003 1.784 329.0
2004 1.788 329.0
2005 1.793 329.0
2006 1.797 328.9
2007 1.801 328.9
2008 1.806 328.8
2009 1.810 328.8
2010 1.814 328.7
2011 1.818 328.7
2012 1.822 328.7
2013 1.826 328.6
2014 1.831 328.6
2015 1.835 328.5
2016 1.839 328.5
2017 1.843 328.5
2018 1.846 328.4
2019 1.850 328.4
2020 1.854 328.4
2021 1.858 328.3
2022 1.862 328.3
2023 1.865 328.2
2024 1.869 328.2
2025 1.873 328.2
2026 1.877 328.1
2027 1.880 328.1
2028 1.884 328.0
2029 1.887 328.0
2030 1.891 328.0

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

grafico orbita





wds19169%2B6312a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19169+6312 STF2509 2005 110 329 1.8 7.44 8.17 F6V D 191653.09+631227.0
19169+6312 STF2509 2010 115 328 1.8 7.44 8.17 F6V D 191653.09+631227.0
19169+6312 STF2509 2011 117 328 1.8 7.44 8.17 F6V OD 191653.09+631227.0
19169+6312 STF2509 2016 116 328 1.9 7.44 8.17 F6V O 191653.09+631227.0

If you need more information about this double, apply for a data request form to the WDS.