18455+0530 FIN 332Aa,Ab

 
 
18h 45m 28.36s +05 30' 00.4" P.A. 302.4 sep 0.08 mag 6.50,6.60 Sp A1V+A1V dist. 188.68 pc (615.47 l.y.)
 
 
Coord 2000
18455+0530
Discov num
FIN 332
Comp
Aa,Ab
Coord arcsec 2000
18 45 28.36 +05 30 00.4
Date first
1953
Date last
2015
Obs
77
Pa first
137
Pa last
308
P.A. Now (θ)
302.4°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.08"
Mag pri
6.50
Mag sec
6.60
delta mag (ΔM)
0.1
Spectral class
A1V+A1V (white/white)
Pri motion ra
-005
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
18455+0530 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 123886 18455+0530 FIN 332 Aa,Ab 1953 2015 77 302 0.1 6.50 6.60 0.10 Y <===
Show 123886 18455+0530 STF2375 AB 1825 2016 300 121 2.4 6.34 6.73 0.39
Show 123886 18455+0530 FIN 332 Ba,Bb 1953 2015 55 332 0.1 7.19 7.95 0.76 Y
Quadruple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
308
Precise sep
0.117
Constellation
Serpens
SAO
123886
HIP
92027
Tycho2
0456-01022-1
HD
173495
HR
7048
ADS
11640
BD
BD+05 3941
Distance
188.68
Distance ly
615.47
last precise pa
308
last precise sep
0.117
 
 
ORBITAL ELEMENTS
 
 
Period (P)27.03y± 0.67 Periastron (T)1994.2y± 0.98 Semi-major axis (a)0.094a± 0.019
Eccentricity (e)0.79± 0.34 Inclination (i)106°± 20 Longitude of periastron (ω)10°± 16
Node (Ω)136.2°± 4.2 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.125 320.0
2001 0.137 318.8
2002 0.146 317.8
2003 0.154 317.0
2004 0.159 316.1
2005 0.163 315.4
2006 0.166 314.7
2007 0.166 313.9
2008 0.165 313.2
2009 0.163 312.5
2010 0.159 311.7
2011 0.154 310.9
2012 0.147 310.0
2013 0.138 309.0
2014 0.127 307.9
2015 0.115 306.5
2016 0.100 304.8
2017 0.083 302.4
2018 0.063 298.7
2019 0.040 291.0
2020 0.016 258.7
2021 0.019 145.1
2022 0.012 11.5
2023 0.044 332.7
2024 0.071 326.4
2025 0.092 323.4
2026 0.110 321.5
2027 0.125 320.0
2028 0.136 318.9
2029 0.146 317.9
2030 0.154 317.0

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

grafico orbita





wds18455%2B0530c.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
18455+0530 FIN 332 Aa,Ab 1997 51 326 0.1 6.50 6.60 A1V+A1V NO 184528.36+053000.4
18455+0530 FIN 332 Aa,Ab 2009 56 313 0.2 6.50 6.60 A1V+A1V NO 184528.36+053000.4
18455+0530 FIN 332 Aa,Ab 2010 72 312 0.2 6.50 6.60 A1V+A1V NOD 184528.36+053000.4
18455+0530 FIN 332 Aa,Ab 2015 77 308 0.1 6.50 6.60 A1V+A1V NO 184528.36+053000.4

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