13120+3205 STT 261

 
 
13H 12M 02.02S +32 05' 07.9" P.A. 338.3 SEP 2.6 MAG 7.40,7.64 SP F6V DIST. 72.52 PC (236.56 L.Y.)
 
 
Coord 2000
13120+3205
Discov num
STT 261
Comp
Coord arcsec 2000
13 12 02.02 +32 05 07.9
Date first
1843
Date last
2017
Obs
259
Pa first
0
Pa last
339
P.A. Now (θ)
338.3°
Sep first
0.5
Sep last
2.7
Sep. Now (ρ)
2.6"
Mag pri
7.40
Mag sec
7.64
delta mag (ΔM)
0.24
Spectral class
F6V (yellow-white)
Pri motion ra
+015
Sec motion ra
+015
Pri motion dec
-006
Sec motion dec
-006
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Canes Venatici
SAO
63396
HIP
64405
Tycho2
2535-01164-1
HD
114723
ADS
8814
BD
BD+32 2327
Distance
72.52
Distance ly
236.56
last precise pa
338.9
last precise sep
2.664
 
 
ORBITAL ELEMENTS
 
 
Period (P)860.8y Periastron (T)1830.2y Semi-major axis (a)1.79a
Eccentricity (e)0.92 Inclination (i)121.3° Longitude of periastron (ω)29.4°
Node (Ω)167.2° Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation2007
label rho theta
2000 2.489 339.1
2001 2.496 339.1
2002 2.502 339.0
2003 2.509 339.0
2004 2.515 338.9
2005 2.522 338.9
2006 2.528 338.8
2007 2.534 338.8
2008 2.540 338.7
2009 2.547 338.7
2010 2.553 338.7
2011 2.559 338.6
2012 2.565 338.6
2013 2.571 338.5
2014 2.577 338.5
2015 2.583 338.5
2016 2.589 338.4
2017 2.595 338.4
2018 2.601 338.3
2019 2.606 338.3
2020 2.612 338.3
2021 2.618 338.2
2022 2.624 338.2
2023 2.629 338.1
2024 2.635 338.1
2025 2.640 338.1
2026 2.646 338.0
2027 2.651 338.0
2028 2.657 337.9
2029 2.662 337.9
2030 2.668 337.9

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