01570+3101 A   819AB

 
 
01H 57M 01.33S +31 01' 22.4" P.A. 359.7 SEP 0.25 MAG 8.16,9.30 SP F5 DIST. 86.06 PC (280.73 L.Y.)
 
 
Coord 2000
01570+3101
Discov num
A   819
Comp
AB
Coord arcsec 2000
01 57 01.33 +31 01 22.4
Date first
1904
Date last
2007
Obs
50
Pa first
132
Pa last
318
P.A. Now (θ)
359.7°
Sep first
0.5
Sep last
0.2
Sep. Now (ρ)
0.25"
Mag pri
8.16
Mag sec
9.30
delta mag (ΔM)
1.14
Spectral class
F5 (yellow-white)
Pri motion ra
+028
Sec motion ra
Pri motion dec
-076
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
01570+3101 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 55122 01570+3101 A 819 AB 1904 2007 50 360 0.2 8.16 9.30 1.14 Y <===
Show 55122 01570+3101 A 819 AB,C 1902 2011 13 271 66.7 7.79 10.00 2.21
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Triangulum
SAO
55122
HIP
9087
Tycho2
2308-01185-1
HD
11849
ADS
1548
BD
BD+30 303
Distance
86.06
Distance ly
280.73
last precise pa
318.3
last precise sep
0.214
 
 
ORBITAL ELEMENTS
 
 
Period (P)164.18y± 32.89 Periastron (T)2010.04y± 1.63 Semi-major axis (a)0.437a± 0.025
Eccentricity (e)0.462± 0.076 Inclination (i)48.6°± 4 Longitude of periastron (ω)149.7°± 31.5
Node (Ω)170.6°± 10.6 Note Grade3(1=Definitive, 9=Indet.)
Equinox Last observation2007
label rho theta
2000 0.184 260.4
2001 0.180 267.8
2002 0.178 275.4
2003 0.178 283.2
2004 0.180 290.8
2005 0.184 298.2
2006 0.189 305.3
2007 0.196 311.9
2008 0.203 318.1
2009 0.210 323.9
2010 0.217 329.3
2011 0.224 334.3
2012 0.231 339.0
2013 0.237 343.5
2014 0.243 347.8
2015 0.247 351.9
2016 0.251 355.8
2017 0.254 359.7
2018 0.256 3.5
2019 0.258 7.2
2020 0.259 10.9
2021 0.260 14.5
2022 0.260 18.1
2023 0.261 21.7
2024 0.261 25.4
2025 0.261 29.0
2026 0.261 32.6
2027 0.262 36.2
2028 0.262 39.7
2029 0.263 43.3
2030 0.264 46.9

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