18558+0327 A  2192

 
 
18h 55m 48.63s +03 26' 59.3" P.A. 320.5 sep 0.13 mag 7.73,8.00 Sp A5V dist. 143.06 pc (466.66 l.y.)
 
 
Coord 2000
18558+0327
Discov num
A  2192
Comp
Coord arcsec 2000
18 55 48.63 +03 26 59.3
Date first
1910
Date last
2015
Obs
88
Pa first
241
Pa last
351
P.A. Now (θ)
320.5°
Sep first
0.3
Sep last
0.1
Sep. Now (ρ)
0.13"
Mag pri
7.73
Mag sec
8.00
delta mag (ΔM)
0.27
Spectral class
A5V (white)
Pri motion ra
+021
Sec motion ra
Pri motion dec
-011
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
350.8
Precise sep
0.148
Constellation
Serpens
HIP
92909
Tycho2
0453-00517-1
HD
175543
ADS
11842
BD
BD+03 3836
Distance
143.06
Distance ly
466.66
last precise pa
350.8
last precise sep
0.148
 
 
ORBITAL ELEMENTS
 
 
Period (P)154.2y± 9.7 Periastron (T)2008.3y± 2.9 Semi-major axis (a)0.295a± 0.015
Eccentricity (e)0.222± 0.024 Inclination (i)129.3°± 1.8 Longitude of periastron (ω)63°± 11
Node (Ω)80.2°± 1.1 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.214 58.4
2001 0.209 55.6
2002 0.203 52.6
2003 0.197 49.4
2004 0.191 46.1
2005 0.185 42.5
2006 0.179 38.7
2007 0.173 34.7
2008 0.168 30.4
2009 0.163 25.8
2010 0.158 20.9
2011 0.155 15.8
2012 0.152 10.4
2013 0.150 4.9
2014 0.148 359.2
2015 0.148 353.5
2016 0.149 347.8
2017 0.150 342.2
2018 0.153 336.7
2019 0.156 331.5
2020 0.161 326.5
2021 0.166 321.8
2022 0.171 317.3
2023 0.177 313.2
2024 0.183 309.3
2025 0.190 305.7
2026 0.196 302.3
2027 0.203 299.2
2028 0.210 296.2
2029 0.217 293.5
2030 0.224 290.9

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

grafico orbita





wds18558%2B0327e.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
18558+0327 A 2192 2001 90 51 0.2 7.73 8.00 A5V NO 185548.63+032659.3
18558+0327 A 2192 2006 91 37 0.2 7.73 8.00 A5V NO 185548.63+032659.3
18558+0327 A 2192 2007 92 31 0.2 7.73 8.00 A5V NO 185548.63+032659.3
18558+0327 A 2192 2015 88 351 0.1 7.73 8.00 A5V NO 185548.63+032659.3

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