17386+5546 STF2199

 
 
17h 38m 38.32s +55 45' 34.9" P.A. 52 sep 1.94 mag 8.03,8.60 Sp F8V dist. 121.21 pc (395.39 l.y.)
 
 
Coord 2000
17386+5546
Discov num
STF2199
Comp
Coord arcsec 2000
17 38 38.32 +55 45 34.9
Date first
1830
Date last
2017
Obs
232
Pa first
116
Pa last
54
P.A. Now (θ)
52°
Sep first
1.7
Sep last
2.1
Sep. Now (ρ)
1.94"
Mag pri
8.03
Mag sec
8.60
delta mag (ΔM)
0.57
Spectral class
F8V (yellow-white)
Pri motion ra
+004
Sec motion ra
+004
Pri motion dec
-012
Sec motion dec
-012
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
54.3
Precise sep
2.061
Constellation
Draco
SAO
30494
HIP
86344
Tycho2
3893-00469-1
HD
160780
ADS
10699
BD
BD+55 1961
Distance
121.21
Distance ly
395.39
last precise pa
54.3
last precise sep
2.061
 
 
ORBITAL ELEMENTS
 
 
Period (P)1298.54y Periastron (T)2073.65y Semi-major axis (a)2.223a
Eccentricity (e)0.0973 Inclination (i)136.4° Longitude of periastron (ω)355.07°
Node (Ω)34.4° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1994
label rho theta
2000 1.901 56.9
2001 1.903 56.6
2002 1.906 56.3
2003 1.908 56.1
2004 1.910 55.8
2005 1.912 55.5
2006 1.914 55.2
2007 1.916 55.0
2008 1.918 54.7
2009 1.920 54.4
2010 1.922 54.2
2011 1.924 53.9
2012 1.926 53.6
2013 1.928 53.4
2014 1.930 53.1
2015 1.932 52.8
2016 1.933 52.6
2017 1.935 52.3
2018 1.937 52.0
2019 1.939 51.8
2020 1.941 51.5
2021 1.943 51.3
2022 1.944 51.0
2023 1.946 50.7
2024 1.948 50.5
2025 1.949 50.2
2026 1.951 50.0
2027 1.953 49.7
2028 1.954 49.4
2029 1.956 49.2
2030 1.958 48.9

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

grafico orbita





wds17386%2B5546a.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
17386+5546 STF2199 2007 208 57 2.0 8.03 8.60 F8V NOD 173838.32+554534.9
17386+5546 STF2199 2008 210 56 2.0 8.03 8.60 F8V NOD 173838.32+554534.9
17386+5546 STF2199 2009 211 57 2.0 8.03 8.60 F8V NOD 173838.32+554534.9
17386+5546 STF2199 2010 219 56 2.0 8.03 8.60 F8V NOD 173838.32+554534.9
17386+5546 STF2199 2013 226 55 2.1 8.03 8.60 F8V NOD 173838.32+554534.9
17386+5546 STF2199 2014 218 56 2.1 8.03 8.60 F8V NOD 173838.32+554534.9
17386+5546 STF2199 2015 230 55 2.1 8.03 8.60 F8V NO 173838.32+554534.9
17386+5546 STF2199 2017 232 54 2.1 8.03 8.60 F8V NO 173838.32+554534.9

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