01131+2942 A  1260AB

 
 
01H 13M 08.90S +29 41' 59.1" P.A. 238.3 SEP 0.14 MAG 9.19,9.40 SP G0
 
 
Coord 2000
01131+2942
Discov num
A  1260
Comp
AB
Coord arcsec 2000
01 13 08.90 +29 41 59.1
Date first
1905
Date last
2009
Obs
22
Pa first
255
Pa last
60
P.A. Now (θ)
238.3°
Sep first
0.2
Sep last
0.3
Sep. Now (ρ)
0.14"
Mag pri
9.19
Mag sec
9.40
delta mag (ΔM)
0.21
Spectral class
G0 (yellow)
Pri motion ra
-018
Sec motion ra
Pri motion dec
-030
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
01131+2942 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 74562 01131+2942 A 1260 AB 1905 2009 22 238 0.1 9.19 9.40 0.21 Y <===
Show 74562 01131+2942 GRV 76 AC 1898 2001 7 170 61.6 9.19 11.00 1.81
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Pisces
SAO
74562
Tycho2
1753-00396-1
HD
7255
ADS
993
last precise pa
59.5
last precise sep
0.26
 
 
ORBITAL ELEMENTS
 
 
Period (P)137.17y Periastron (T)2029.43y Semi-major axis (a)0.288a
Eccentricity (e)0.489 Inclination (i)78.1° Longitude of periastron (ω)274.29°
Node (Ω)242.2° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.262 53.4
2001 0.263 54.0
2002 0.263 54.6
2003 0.264 55.1
2004 0.264 55.7
2005 0.263 56.3
2006 0.262 56.8
2007 0.260 57.4
2008 0.258 58.0
2009 0.255 58.6
2010 0.252 59.2
2011 0.248 59.8
2012 0.243 60.5
2013 0.237 61.1
2014 0.231 61.8
2015 0.223 62.6
2016 0.215 63.4
2017 0.206 64.3
2018 0.195 65.3
2019 0.184 66.4
2020 0.171 67.6
2021 0.157 69.1
2022 0.142 70.8
2023 0.125 73.0
2024 0.108 75.9
2025 0.090 80.0
2026 0.071 86.1
2027 0.052 96.7
2028 0.037 117.3
2029 0.030 154.7
2030 0.038 190.6

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