17403+6341 STF2218

 
 
17h 40m 18.07s +63 40' 31.4" P.A. 308.8 sep 1.43 mag 7.08,8.37 Sp F8V dist. 68.49 pc (223.41 l.y.)
 
 
Coord 2000
17403+6341
Discov num
STF2218
Comp
Coord arcsec 2000
17 40 18.07 +63 40 31.4
Date first
1831
Date last
2014
Obs
167
Pa first
0
Pa last
310
P.A. Now (θ)
308.8°
Sep first
2.8
Sep last
1.5
Sep. Now (ρ)
1.43"
Mag pri
7.08
Mag sec
8.37
delta mag (ΔM)
1.29
Spectral class
F8V (yellow-white)
Pri motion ra
+006
Sec motion ra
+006
Pri motion dec
+140
Sec motion dec
+140
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
309.6
Precise sep
1.458
Constellation
Draco
SAO
17599
HIP
86482
Tycho2
4203-01438-1
HD
161285
ADS
10728
BD
BD+63 1371
Distance
68.49
Distance ly
223.41
last precise pa
309.6
last precise sep
1.458
 
 
ORBITAL ELEMENTS
 
 
Period (P)2130y Periastron (T)2108y Semi-major axis (a)3.575a
Eccentricity (e)0.79 Inclination (i)133.5° Longitude of periastron (ω)234.1°
Node (Ω)85.9° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 1.541 315.8
2001 1.535 315.4
2002 1.529 315.0
2003 1.523 314.6
2004 1.516 314.2
2005 1.510 313.8
2006 1.504 313.4
2007 1.497 313.0
2008 1.491 312.6
2009 1.485 312.2
2010 1.478 311.8
2011 1.472 311.4
2012 1.466 310.9
2013 1.459 310.5
2014 1.453 310.1
2015 1.446 309.6
2016 1.440 309.2
2017 1.433 308.8
2018 1.427 308.3
2019 1.420 307.9
2020 1.414 307.4
2021 1.407 307.0
2022 1.401 306.5
2023 1.394 306.0
2024 1.388 305.6
2025 1.381 305.1
2026 1.374 304.6
2027 1.368 304.1
2028 1.361 303.6
2029 1.354 303.1
2030 1.348 302.6

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

grafico orbita





wds17403%2B6341a.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
17403+6341 STF2218 2004 164 313 1.5 7.08 8.37 F8V D 174018.07+634031.4
17403+6341 STF2218 2010 168 311 1.5 7.08 8.37 F8V D 174018.07+634031.4
17403+6341 STF2218 2013 174 309 1.4 7.08 8.37 F8V D 174018.07+634031.4
17403+6341 STF2218 2014 165 313 1.4 7.08 8.37 F8V D 174018.07+634031.4

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