12108+3953 STF1606

 
 
12H 10M 47.34S +39 53' 29.5" P.A. 143.5 SEP 0.58 MAG 7.44,7.93 SP A8III DIST. 120.19 PC (392.06 L.Y.)
 
 
Coord 2000
12108+3953
Discov num
STF1606
Comp
Coord arcsec 2000
12 10 47.34 +39 53 29.5
Date first
1830
Date last
2015
Obs
261
Pa first
349
Pa last
151
P.A. Now (θ)
143.5°
Sep first
0.8
Sep last
0.6
Sep. Now (ρ)
0.58"
Mag pri
7.44
Mag sec
7.93
delta mag (ΔM)
0.49
Spectral class
A8III (white)
Pri motion ra
-029
Sec motion ra
Pri motion dec
-025
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Canes Venatici
SAO
44064
HIP
59366
Tycho2
3017-00781-1
HD
105824
ADS
8446
BD
BD+40 2508
Distance
120.19
Distance ly
392.06
last precise pa
151.2
last precise sep
0.58
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)1431y± 78 Periastron (T)1988.32y± 0.98 Semi-major axis (a)2.002a± 0.096
Eccentricity (e)0.7796± 0.0043 Inclination (i)129.5°± 1.8 Longitude of periastron (ω)256.7°± 3
Node (Ω)122.2°± 1.5 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.337 179.2
2001 0.349 175.8
2002 0.361 172.6
2003 0.374 169.6
2004 0.388 166.9
2005 0.402 164.3
2006 0.416 161.9
2007 0.430 159.6
2008 0.445 157.5
2009 0.460 155.6
2010 0.474 153.7
2011 0.489 152.0
2012 0.504 150.4
2013 0.519 148.8
2014 0.534 147.4
2015 0.549 146.0
2016 0.563 144.7
2017 0.578 143.5
2018 0.593 142.3
2019 0.607 141.2
2020 0.621 140.1
2021 0.635 139.1
2022 0.649 138.1
2023 0.663 137.2
2024 0.677 136.3
2025 0.691 135.5
2026 0.704 134.6
2027 0.718 133.8
2028 0.731 133.1
2029 0.744 132.3
2030 0.757 131.6

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
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)75y Periastron (T)1880.276y Semi-major axis (a)0.078a
Eccentricity (e)0.37299 Inclination (i)83.137° Longitude of periastron (ω)191.57°
Node (Ω)138.419° Note Grade9(1=Definitive, 9=Indet.)
Equinox1900 Last observation1973
label rho theta
2000 0.091 142.2
2001 0.088 142.6
2002 0.085 143.0
2003 0.082 143.5
2004 0.078 144.0
2005 0.074 144.6
2006 0.070 145.2
2007 0.065 145.9
2008 0.060 146.7
2009 0.056 147.7
2010 0.050 148.8
2011 0.045 150.3
2012 0.039 152.1
2013 0.034 154.5
2014 0.028 157.9
2015 0.022 163.1
2016 0.017 171.9
2017 0.012 188.9
2018 0.009 222.5
2019 0.010 262.2
2020 0.014 285.0
2021 0.020 296.3
2022 0.025 302.7
2023 0.031 306.9
2024 0.036 309.8
2025 0.040 312.0
2026 0.044 313.8
2027 0.047 315.3
2028 0.049 316.7
2029 0.049 318.1
2030 0.048 319.4

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