20089+6205 STF2652

 
 
20h 08m 56.80s +62 04' 36.0" P.A. 204.2 sep 0.31 mag 7.29,7.78 Sp A0V dist. 252.53 pc (823.75 l.y.)
 
 
Coord 2000
20089+6205
Discov num
STF2652
Comp
Coord arcsec 2000
20 08 56.80 +62 04 36.0
Date first
1831
Date last
2006
Obs
74
Pa first
285
Pa last
210
P.A. Now (θ)
204.2°
Sep first
0.5
Sep last
0.3
Sep. Now (ρ)
0.31"
Mag pri
7.29
Mag sec
7.78
delta mag (ΔM)
0.49
Spectral class
A0V (white)
Pri motion ra
+012
Sec motion ra
Pri motion dec
-019
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
209.5
Precise sep
0.311
Constellation
Draco
SAO
18732
HIP
99257
Tycho2
4236-01106-1
Gaia DR2
66972481792
HD
191940
ADS
13449
BD
BD+61 1975
Distance
252.53
Distance ly
823.75
last precise pa
209.5
last precise sep
0.311
 
 
ORBITAL ELEMENTS
 
 
Period (P)495y Periastron (T)2185y Semi-major axis (a)0.495a
Eccentricity (e)0.72 Inclination (i)111.2° Longitude of periastron (ω)85.8°
Node (Ω)141.3° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2005
label rho theta
2000 0.307 213.1
2001 0.308 212.6
2002 0.308 212.1
2003 0.308 211.6
2004 0.308 211.2
2005 0.309 210.7
2006 0.309 210.2
2007 0.309 209.8
2008 0.310 209.3
2009 0.310 208.8
2010 0.310 208.4
2011 0.311 207.9
2012 0.311 207.4
2013 0.311 207.0
2014 0.312 206.5
2015 0.312 206.1
2016 0.313 205.6
2017 0.313 205.1
2018 0.313 204.7
2019 0.314 204.2
2020 0.314 203.8
2021 0.315 203.3
2022 0.315 202.9
2023 0.315 202.4
2024 0.316 202.0
2025 0.316 201.5
2026 0.317 201.1
2027 0.317 200.6
2028 0.318 200.2
2029 0.318 199.8
2030 0.319 199.3

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






wds20089%2B6205a.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
20089+6205 STF2652 2005 73 207 0.3 7.29 7.78 A0V D 200856.80+620436.0
20089+6205 STF2652 2006 74 210 0.3 7.29 7.78 A0V O 200856.80+620436.0

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