09144+5241 STF1321AB

 
 
09H 14M 22.79S +52 41' 11.8" P.A. 98.4 SEP 16.83 MAG 7.79,7.88 SP M0V+M0V DIST. 5.81 PC (18.95 L.Y.)
 
 
Coord 2000
09144+5241
Discov num
STF1321
Comp
AB
Coord arcsec 2000
09 14 22.79 +52 41 11.8
Date first
1821
Date last
2016
Obs
460
Pa first
44
Pa last
97
P.A. Now (θ)
98.4°
Sep first
21.1
Sep last
17.2
Sep. Now (ρ)
16.83"
Mag pri
7.79
Mag sec
7.88
delta mag (ΔM)
0.09
Spectral class
M0V+M0V (red/red)
Pri motion ra
-153
Sec motion ra
-155
Pri motion dec
-056
Sec motion dec
-066
Notes
N O P (See Notes, Orbital solution, 100-year proper motion)
rPM=0.061 (< 0.3, Physical double)
This double is physical.
 
 
09144+5241 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 27178 09144+5241 STF1321 AB 1821 2016 460 98 16.8 7.79 7.88 0.09 Y <===
Show 27178 09144+5241 STF1321 AC 1903 2003 6 62 128.1 7.79 14.53 6.74
Show 27178 09144+5241 STF1321 AD 1879 2015 7 309 136.4 7.79 11.89 4.10
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ursa Major
SAO
27178
HIP
45343
Tycho2
3806-01814-1
HD
79210
ADS
7251
GL
Gl 338A
BD
BD+53 1320
Distance
5.81
Distance ly
18.95
last precise pa
97.4
last precise sep
17.2
 
 
ORBITAL ELEMENTS
 
 
Period (P)975y Periastron (T)2260y Semi-major axis (a)16.725a
Eccentricity (e)0.28 Inclination (i)21° Longitude of periastron (ω)44°
Node (Ω)173.8° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation1970
label rho theta
2000 17.207 93.0
2001 17.185 93.3
2002 17.163 93.6
2003 17.141 93.9
2004 17.119 94.2
2005 17.097 94.5
2006 17.075 94.8
2007 17.053 95.2
2008 17.030 95.5
2009 17.008 95.8
2010 16.986 96.1
2011 16.964 96.4
2012 16.941 96.8
2013 16.919 97.1
2014 16.897 97.4
2015 16.874 97.7
2016 16.852 98.1
2017 16.829 98.4
2018 16.807 98.7
2019 16.785 99.0
2020 16.762 99.4
2021 16.740 99.7
2022 16.717 100.0
2023 16.695 100.4
2024 16.672 100.7
2025 16.650 101.0
2026 16.627 101.4
2027 16.605 101.7
2028 16.582 102.0
2029 16.559 102.4
2030 16.537 102.7

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