00487+1841 BU  495AB

 
 
00H 48M 44.81S +18 41' 07.9" P.A. 238.6 SEP 0.43 MAG 8.34,8.61 SP G0 DIST. 64.1 PC (209.09 L.Y.)
 
 
Coord 2000
00487+1841
Discov num
BU  495
Comp
AB
Coord arcsec 2000
00 48 44.81 +18 41 07.9
Date first
1878
Date last
2013
Obs
162
Pa first
231
Pa last
245
P.A. Now (θ)
238.6°
Sep first
0.6
Sep last
0.3
Sep. Now (ρ)
0.43"
Mag pri
8.34
Mag sec
8.61
delta mag (ΔM)
0.27
Spectral class
G0 (yellow)
Pri motion ra
-015
Sec motion ra
Pri motion dec
-051
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
00487+1841 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 92095 00487+1841 BU 495 AB 1878 2013 162 239 0.4 8.34 8.61 0.27 Y <===
Show 92095 00487+1841 TOK 224 AC 1895 2014 6 139 151.5 8.34 10.83 2.49
Show 00487+1841 RAO 5 Ca,Cb 2012 2013 2 321 0.7 10.83 12.00 1.17
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Pisces
SAO
92095
HIP
3795
Tycho2
1191-01284-1
HD
4655
ADS
673
BD
BD+17 105
Distance
64.1
Distance ly
209.09
last precise pa
245.4
last precise sep
0.345
 
 
ORBITAL ELEMENTS
 
 
Period (P)143.628y± 4 Periastron (T)1979.856y± 0.27 Semi-major axis (a)0.617a± 0.026
Eccentricity (e)0.5± 0.01 Inclination (i)107.4°± 4.6 Longitude of periastron (ω)338.1°± 12.4
Node (Ω)31.3°± 5.6 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation1998
label rho theta
2000 0.168 309.0
2001 0.171 300.4
2002 0.177 292.2
2003 0.186 284.6
2004 0.198 277.9
2005 0.212 272.0
2006 0.227 266.9
2007 0.244 262.4
2008 0.261 258.5
2009 0.279 255.1
2010 0.298 252.1
2011 0.317 249.5
2012 0.336 247.2
2013 0.355 245.1
2014 0.374 243.2
2015 0.393 241.5
2016 0.412 240.0
2017 0.430 238.6
2018 0.449 237.3
2019 0.467 236.2
2020 0.485 235.1
2021 0.503 234.1
2022 0.521 233.1
2023 0.538 232.2
2024 0.555 231.4
2025 0.571 230.6
2026 0.587 229.9
2027 0.603 229.2
2028 0.618 228.5
2029 0.633 227.9
2030 0.648 227.3

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic