20048+0109 TOK 699

 
 
20h 04m 46.61s +01 09' 21.6" P.A. 148.1 sep 0.1 mag 7.70,11.60 Sp G5 dist. 38.26 pc (124.8 l.y.)
 
 
Coord 2000
20048+0109
Discov num
TOK 699
Comp
Coord arcsec 2000
20 04 46.61 +01 09 21.6
Date first
2015
Date last
2018
Obs
9
Pa first
318
Pa last
135
P.A. Now (θ)
148.1°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
7.70
Mag sec
11.60
delta mag (ΔM)
3.9
Spectral class
G5 (yellow)
Pri motion ra
+011
Sec motion ra
Pri motion dec
-038
Sec motion dec
Notes
O (Orbital solution)
-10 This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
134.5
Precise sep
0.102
Constellation
Aquila
HIP
98878
Tycho2
0494-00788-1
Gaia DR2
10387302400
HD
190412
BD
BD+00 4408
Distance
38.26
Distance ly
124.8
last precise pa
134.5
last precise sep
0.102
 
 
ORBITAL ELEMENTS
 
 
Period (P)7.83y Periastron (T)2018.62y Semi-major axis (a)0.164a
Eccentricity (e)0.256 Inclination (i)40.5° Longitude of periastron (ω)47.6°
Node (Ω)74.3° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.154 325.1
2001 0.138 9.1
2002 0.136 57.2
2003 0.105 117.3
2004 0.120 203.7
2005 0.175 245.9
2006 0.193 271.7
2007 0.178 297.6
2008 0.150 331.8
2009 0.137 17.2
2010 0.134 65.6
2011 0.100 132.0
2012 0.130 213.6
2013 0.181 250.7
2014 0.192 275.9
2015 0.173 302.7
2016 0.146 338.9
2017 0.137 25.4
2018 0.131 74.4
2019 0.097 148.1
2020 0.141 222.0
2021 0.186 255.3
2022 0.191 280.1
2023 0.168 308.0
2024 0.143 346.3
2025 0.138 33.6
2026 0.126 83.8
2027 0.098 164.5
2028 0.151 229.3
2029 0.190 259.7
2030 0.188 284.4

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






wds20048%2B0109a.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
20048+0109 TOK 699 2015 2 318 0.2 7.70 11.60 G5 200446.61+010921.6
20048+0109 TOK 699 2017 3 46 0.1 7.70 11.60 G5 200446.61+010921.6

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