13081+2657 STT 260

 
 
13h 08m 03.14s +26 56' 48.7" P.A. 77.9 sep 0.35 mag 8.98,9.50 Sp F9V dist. 102.35 pc (333.87 l.y.)
 
 
Coord 2000
13081+2657
Discov num
STT 260
Comp
Coord arcsec 2000
13 08 03.14 +26 56 48.7
Date first
1843
Date last
1997
Obs
103
Pa first
120
Pa last
193
P.A. Now (θ)
77.9°
Sep first
0.8
Sep last
0.2
Sep. Now (ρ)
0.35"
Mag pri
8.98
Mag sec
9.50
delta mag (ΔM)
0.52
Spectral class
F9V (yellow-white)
Pri motion ra
-023
Sec motion ra
Pri motion dec
+034
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
192.5
Precise sep
0.18
Constellation
Coma Berenices
SAO
82667
HIP
64092
Tycho2
1996-01541-1
HD
114109
ADS
8791
BD
BD+27 2219
Distance
102.35
Distance ly
333.87
last precise pa
192.5
last precise sep
0.18
 
 
ORBITAL ELEMENTS
 
 
Period (P)233.79y Periastron (T)1994.72y Semi-major axis (a)0.422a
Eccentricity (e)0.846 Inclination (i)25.8° Longitude of periastron (ω)265.1°
Node (Ω)32.3° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation1997
label rho theta
2000 0.140 36.8
2001 0.157 42.8
2002 0.173 47.6
2003 0.189 51.6
2004 0.204 55.0
2005 0.218 58.0
2006 0.231 60.6
2007 0.244 62.9
2008 0.257 65.0
2009 0.269 66.9
2010 0.281 68.7
2011 0.292 70.3
2012 0.303 71.7
2013 0.314 73.1
2014 0.324 74.4
2015 0.335 75.6
2016 0.344 76.8
2017 0.354 77.9
2018 0.363 78.9
2019 0.372 79.8
2020 0.381 80.8
2021 0.390 81.7
2022 0.398 82.5
2023 0.407 83.3
2024 0.415 84.1
2025 0.423 84.9
2026 0.430 85.6
2027 0.438 86.3
2028 0.445 86.9
2029 0.452 87.6
2030 0.459 88.2

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





wds13081%2B2657a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
13081+2657 STT 260 1997 102 193 0.2 8.98 9.50 F9V O 130803.14+265648.7

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