20048+0109 TOK 699

 
 
20h 04m 46.61s +01 09' 21.6" P.A. 256.10 sep 0.2 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
2020
Obs
13
Pa first
318
Pa last
247
P.A. Now (θ)
256.1°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.17"
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)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
246.8
Precise sep
0.163
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
246.8
last precise sep
0.163
 
 
ORBITAL ELEMENTS
 
 
Period (P)7.446y± 0.025 Periastron (T)2018.701y± 0.034 Semi-major axis (a)0.15a± 0.003
Eccentricity (e)0.202± 0.009 Inclination (i)32.3°± 3 Longitude of periastron (ω)239.3°± 3
Node (Ω)247.7°± 2.8 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2019
label rho theta
2000 0.161 299.6
2001 0.147 337.7
2002 0.141 21.5
2003 0.130 69.7
2004 0.103 138.3
2005 0.130 211.3
2006 0.163 252.4
2007 0.167 284.7
2008 0.153 319.8
2009 0.143 1.5
2010 0.137 47.3
2011 0.113 103.5
2012 0.111 183.4
2013 0.152 236.4
2014 0.168 270.4
2015 0.160 303.4
2016 0.146 342.2
2017 0.140 26.5
2018 0.127 75.6
2019 0.103 147.5
2020 0.135 216.8
2021 0.165 256.1
2022 0.166 288.2
2023 0.152 324.0
2024 0.142 6.3
2025 0.136 52.5
2026 0.110 111.3
2027 0.115 191.0
2028 0.155 240.5
2029 0.168 273.9
2030 0.158 307.2

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






wds20048%2B0109b.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
20048+0109 TOK 699 2018 9 135 0.1 7.70 11.60 G5 O 200446.61+010921.6
20048+0109 TOK 699 2019 11 209 0.1 7.70 11.60 G5 O 200446.61+010921.6

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