20102+4357 STT 400

 
 
20h 10m 13.32s +43 56' 44.2" P.A. 327 sep 0.65 mag 7.60,9.83 Sp G3V dist. 51.33 pc (167.44 l.y.)
 
 
Coord 2000
20102+4357
Discov num
STT 400
Comp
Coord arcsec 2000
20 10 13.32 +43 56 44.2
Date first
1843
Date last
2017
Obs
240
Pa first
327
Pa last
329
P.A. Now (θ)
327°
Sep first
0.5
Sep last
0.7
Sep. Now (ρ)
0.65"
Mag pri
7.60
Mag sec
9.83
delta mag (ΔM)
2.23
Spectral class
G3V (yellow)
Pri motion ra
+009
Sec motion ra
+009
Pri motion dec
+089
Sec motion dec
+089
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
328.7
Precise sep
0.695
Constellation
Cygnus
SAO
49262
HIP
99376
Tycho2
3163-01459-1
Gaia DR2
69591424896
HD
191854
ADS
13461
BD
BD+43 3513
Distance
51.33
Distance ly
167.44
last precise pa
328.7
last precise sep
0.695
 
 
ORBITAL ELEMENTS
 
 
Period (P)85.61y Periastron (T)1970.27y Semi-major axis (a)0.449a
Eccentricity (e)0.488 Inclination (i)116.4° Longitude of periastron (ω)339.4°
Node (Ω)142.2° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.491 345.0
2001 0.506 343.6
2002 0.522 342.4
2003 0.536 341.2
2004 0.549 340.1
2005 0.562 339.0
2006 0.574 338.0
2007 0.585 337.0
2008 0.595 336.1
2009 0.605 335.2
2010 0.613 334.3
2011 0.621 333.4
2012 0.628 332.6
2013 0.634 331.7
2014 0.639 330.9
2015 0.643 330.1
2016 0.646 329.3
2017 0.648 328.6
2018 0.649 327.8
2019 0.650 327.0
2020 0.649 326.2
2021 0.647 325.4
2022 0.644 324.6
2023 0.641 323.8
2024 0.636 323.0
2025 0.630 322.2
2026 0.623 321.4
2027 0.615 320.5
2028 0.605 319.6
2029 0.595 318.7
2030 0.583 317.8

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






wds20102%2B4357b.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
20102+4357 STT 400 2007 230 336 0.6 7.60 9.83 G3V NOD 201013.32+435644.2
20102+4357 STT 400 2008 234 335 0.6 7.60 9.83 G3V NOD 201013.32+435644.2
20102+4357 STT 400 2010 235 333 0.6 7.60 9.83 G3V NOD 201013.32+435644.2
20102+4357 STT 400 2012 235 333 0.7 7.60 9.83 G3V NOD 201013.32+435644.2
20102+4357 STT 400 2013 237 330 0.6 7.60 9.83 G3V NO 201013.32+435644.2
20102+4357 STT 400 2016 238 329 0.7 7.60 9.83 G3V NO 201013.32+435644.2
20102+4357 STT 400 2017 240 329 0.7 7.60 9.83 G3V NO 201013.32+435644.2

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