20290+0710 A   610

 
 
20h 29m 02.58s +07 09' 29.3" P.A. 94.2 sep 0.46 mag 9.52,9.91 Sp G0 dist. 78.12 pc (254.83 l.y.)
 
 
Coord 2000
20290+0710
Discov num
A   610
Comp
Coord arcsec 2000
20 29 02.58 +07 09 29.3
Date first
1901
Date last
2018
Obs
82
Pa first
189
Pa last
93
P.A. Now (θ)
94.2°
Sep first
0.5
Sep last
0.5
Sep. Now (ρ)
0.46"
Mag pri
9.52
Mag sec
9.91
delta mag (ΔM)
0.39
Spectral class
G0 (yellow)
Pri motion ra
-050
Sec motion ra
Pri motion dec
-002
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
92.6
Precise sep
0.506
Constellation
Delphinus
HIP
101046
Tycho2
0509-01364-1
HD
195090
ADS
13894
BD
BD+06 4543
Distance
78.12
Distance ly
254.83
last precise pa
92.6
last precise sep
0.506
 
 
ORBITAL ELEMENTS
 
 
Period (P)170.62y Periastron (T)1984.25y Semi-major axis (a)0.472a
Eccentricity (e)0.232 Inclination (i)30.3° Longitude of periastron (ω)285.2°
Node (Ω)72° Note Grade3(1=Definitive, 9=Indet.)
Equinox Last observation2000
label rho theta
2000 0.383 52.1
2001 0.388 54.7
2002 0.393 57.3
2003 0.398 59.8
2004 0.403 62.3
2005 0.407 64.7
2006 0.412 67.1
2007 0.416 69.4
2008 0.420 71.6
2009 0.424 73.8
2010 0.428 76.0
2011 0.432 78.1
2012 0.435 80.2
2013 0.438 82.3
2014 0.441 84.4
2015 0.444 86.4
2016 0.447 88.4
2017 0.450 90.3
2018 0.452 92.3
2019 0.455 94.2
2020 0.457 96.1
2021 0.459 98.0
2022 0.461 99.8
2023 0.463 101.7
2024 0.464 103.5
2025 0.466 105.3
2026 0.467 107.2
2027 0.469 109.0
2028 0.470 110.8
2029 0.471 112.5
2030 0.473 114.3

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






wds20290%2B0710a.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
20290+0710 A 610 2002 77 58 0.3 9.52 9.91 G0 NOD 202902.58+070929.3
20290+0710 A 610 2006 78 69 0.4 9.52 9.91 G0 NOD 202902.58+070929.3
20290+0710 A 610 2007 79 70 0.4 9.52 9.91 G0 NOD 202902.58+070929.3
20290+0710 A 610 2015 80 87 0.5 9.52 9.91 G0 NO 202902.58+070929.3
20290+0710 A 610 2017 81 91 0.5 9.52 9.91 G0 NO 202902.58+070929.3

If you need more information about this double, apply for a data request form to the WDS.