15347+2655 COU 798

 
 
15h 34m 40.64s +26 54' 42.8" P.A. 210.8 sep 0.24 mag 9.50,9.80 Sp G0+G2
 
 
Coord 2000
15347+2655
Discov num
COU 798
Comp
Coord arcsec 2000
15 34 40.64 +26 54 42.8
Date first
1972
Date last
2008
Obs
38
Pa first
31
Pa last
181
P.A. Now (θ)
210.8°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.24"
Mag pri
9.50
Mag sec
9.80
delta mag (ΔM)
0.3
Spectral class
G0+G2 (yellow/yellow)
Pri motion ra
-047
Sec motion ra
Pri motion dec
+036
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
180.9
Precise sep
0.127
Constellation
Corona Borealis
SAO
83894
Tycho2
2029-00232-1
last precise pa
180.9
last precise sep
0.127
 
 
ORBITAL ELEMENTS
 
 
Period (P)154.7y± 1.5 Periastron (T)1983.37y± 0.05 Semi-major axis (a)0.259a± 0.004
Eccentricity (e)0.357± 0.007 Inclination (i)66.7°± 2.5 Longitude of periastron (ω)24.7°± 10
Node (Ω)46.1°± 4 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2007
label rho theta
2000 0.088 159.2
2001 0.094 166.2
2002 0.101 172.3
2003 0.109 177.5
2004 0.117 182.1
2005 0.126 186.0
2006 0.135 189.4
2007 0.144 192.3
2008 0.153 195.0
2009 0.162 197.3
2010 0.171 199.4
2011 0.179 201.3
2012 0.188 203.0
2013 0.196 204.6
2014 0.205 206.0
2015 0.213 207.3
2016 0.220 208.6
2017 0.228 209.7
2018 0.235 210.8
2019 0.242 211.8
2020 0.249 212.7
2021 0.256 213.6
2022 0.262 214.5
2023 0.268 215.3
2024 0.274 216.1
2025 0.280 216.9
2026 0.285 217.6
2027 0.290 218.3
2028 0.295 218.9
2029 0.300 219.6
2030 0.304 220.2

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

grafico orbita





wds15347%2B2655b.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
15347+2655 COU 798 1999 34 112 0.1 8.60 8.60 G0 OD 153440.64+265442.8
15347+2655 COU 798 2007 35 194 0.2 8.60 8.60 G0 OD 153440.64+265442.8
15347+2655 COU 798 2008 38 181 0.1 9.50 9.80 G0 G2 NOD 153440.64+265442.8

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