18250+2724 STF2315AB

 
 
18h 24m 58.46s +27 23' 41.3" P.A. 116.2 sep 0.61 mag 6.57,7.77 Sp A0V+A4V dist. 117.51 pc (383.32 l.y.)
 
 
Coord 2000
18250+2724
Discov num
STF2315
Comp
AB
Coord arcsec 2000
18 24 58.46 +27 23 41.3
Date first
1828
Date last
2015
Obs
261
Pa first
282
Pa last
114
P.A. Now (θ)
116.2°
Sep first
0.6
Sep last
0.6
Sep. Now (ρ)
0.61"
Mag pri
6.57
Mag sec
7.77
delta mag (ΔM)
1.2
Spectral class
A0V+A4V (white/white)
Pri motion ra
+003
Sec motion ra
+003
Pri motion dec
-012
Sec motion dec
-012
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
18250+2724 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 86019 18250+2724 STF2315 AB 1828 2015 261 116 0.6 6.57 7.77 1.20 Y <===
Show 86019 18250+2724 STF2315 AC 1898 2002 4 79 44.9 6.57 13.90 7.33
Show 86019 18250+2724 BU 9009 AD 1874 2002 3 290 118.0 6.57 11.40 4.83
Show 18250+2724 HO 84 DE 1885 2002 31 321 4.4 11.40 13.40 2.00
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
114.3
Precise sep
0.61
Constellation
Hercules
SAO
86019
HIP
90256
Tycho2
2101-02501-1
HD
169718
HR
6904
ADS
11334
BD
BD+27 3016
Distance
117.51
Distance ly
383.32
last precise pa
114.3
last precise sep
0.61
 
 
ORBITAL ELEMENTS
 
 
Period (P)2094y Periastron (T)1982y Semi-major axis (a)2.062a
Eccentricity (e)0.6877 Inclination (i)107.6° Longitude of periastron (ω)352.4°
Node (Ω)127.7° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2003
label rho theta
2000 0.644 123.1
2001 0.643 122.7
2002 0.642 122.3
2003 0.640 121.9
2004 0.639 121.5
2005 0.637 121.1
2006 0.635 120.7
2007 0.633 120.3
2008 0.631 119.9
2009 0.629 119.5
2010 0.627 119.1
2011 0.624 118.7
2012 0.622 118.3
2013 0.619 117.9
2014 0.616 117.5
2015 0.613 117.0
2016 0.610 116.6
2017 0.607 116.2
2018 0.604 115.7
2019 0.601 115.3
2020 0.597 114.8
2021 0.594 114.4
2022 0.591 113.9
2023 0.587 113.5
2024 0.583 113.0
2025 0.579 112.5
2026 0.576 112.1
2027 0.572 111.6
2028 0.568 111.1
2029 0.564 110.6
2030 0.560 110.1

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

grafico orbita





wds18250%2B2724a.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
18250+2724 STF2315 AB 2007 274 119 0.6 6.57 7.77 A0V+A4V NOD 182458.46+272341.3
18250+2724 STF2315 AB 2009 280 119 0.6 6.57 7.77 A0V+A4V NOD 182458.46+272341.3
18250+2724 STF2315 AB 2010 282 119 0.6 6.57 7.77 A0V+A4V NOD 182458.46+272341.3
18250+2724 STF2315 AB 2011 284 118 0.6 6.57 7.77 A0V A4V NO 182458.46+272341.3
18250+2724 STF2315 AB 2013 260 118 0.6 6.57 7.77 A0V+A4V NO 182458.46+272341.3
18250+2724 STF2315 AB 2015 261 114 0.6 6.57 7.77 A0V+A4V NO 182458.46+272341.3

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