18455+0530 FIN 332Ba,Bb

 
 
18h 45m 28.36s +05 30' 00.4" P.A. 332.2 sep 0.1 mag 7.19,7.95 Sp A1V+... dist. 188.68 pc (615.47 l.y.)
 
 
Coord 2000
18455+0530
Discov num
FIN 332
Comp
Ba,Bb
Coord arcsec 2000
18 45 28.36 +05 30 00.4
Date first
1953
Date last
2015
Obs
55
Pa first
135
Pa last
337
P.A. Now (θ)
332.2°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
7.19
Mag sec
7.95
delta mag (ΔM)
0.76
Spectral class
A1V+... (white)
Pri motion ra
+009
Sec motion ra
+009
Pri motion dec
-003
Sec motion dec
-003
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
336.8
Precise sep
0.083
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
336.8
last precise sep
0.083
 
 
ORBITAL ELEMENTS
 
 
Period (P)38.6y± 1.2 Periastron (T)1967.9y± 1.9 Semi-major axis (a)0.105a± 0.015
Eccentricity (e)0.867± 0.034 Inclination (i)117.2°± 9.5 Longitude of periastron (ω)311.2°± 8.3
Node (Ω)111.8°± 5.7 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.122 304.8
2001 0.113 303.1
2002 0.103 301.1
2003 0.090 298.6
2004 0.073 295.0
2005 0.052 289.0
2006 0.019 267.1
2007 0.021 92.7
2008 0.026 49.9
2009 0.034 23.0
2010 0.043 6.9
2011 0.053 356.7
2012 0.063 349.6
2013 0.072 344.5
2014 0.081 340.5
2015 0.089 337.2
2016 0.097 334.5
2017 0.104 332.2
2018 0.111 330.2
2019 0.117 328.4
2020 0.123 326.8
2021 0.128 325.3
2022 0.133 323.9
2023 0.137 322.6
2024 0.140 321.4
2025 0.144 320.3
2026 0.146 319.2
2027 0.148 318.1
2028 0.150 317.0
2029 0.151 316.0
2030 0.151 314.9

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

grafico orbita





wds18455%2B0530j.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 Ba,Bb 1997 43 130 0.1 7.19 7.95 NO 184528.36+053000.4
18455+0530 FIN 332 Ba,Bb 2008 44 42 0.0 7.19 7.95 NO 184528.36+053000.4
18455+0530 FIN 332 Ba,Bb 2015 55 337 0.1 7.19 7.95 A1V+... NO 184528.36+053000.4

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