20302+2651 WOR   9AB

 
 
20h 30m 10.63s +26 50' 33.7" P.A. 214.1 sep 0.56 mag 10.50,10.63 Sp M1V dist. 23.82 pc (77.7 l.y.)
 
 
Coord 2000
20302+2651
Discov num
WOR   9
Comp
AB
Coord arcsec 2000
20 30 10.63 +26 50 33.7
Date first
1959
Date last
2016
Obs
41
Pa first
334
Pa last
230
P.A. Now (θ)
214.1°
Sep first
1.3
Sep last
0.6
Sep. Now (ρ)
0.56"
Mag pri
10.50
Mag sec
10.63
delta mag (ΔM)
0.13
Spectral class
M1V (red)
Pri motion ra
-163
Sec motion ra
-146
Pri motion dec
-130
Sec motion dec
-142
Notes
N O (See Notes, Orbital solution)
rPM=0.1 (< 0.3, Physical double)
This double is physical.
 
 
20302+2651 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20302+2651 WOR 9 AB 1959 2016 41 214 0.6 10.50 10.63 0.13 Y <===
Show 20302+2651 BUP 213 AC 1898 2015 13 317 9.9 10.50 12.67 2.17
Show 20302+2651 BUP 213 AD 1898 2015 11 281 93.0 10.50 11.00 0.50
Show 20302+2651 BUP 213 AE 1900 2002 5 93 999.9 10.50 10.18 0.32
Show 20302+2651 LMP 45 AF 1997 2015 6 252 43.7 10.50 13.10 2.60
Sextuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
230.1
Precise sep
0.62
Constellation
Vulpecula
HIP
101150
Tycho2
2164-00070-1
Gaia DR2
01709083136
HD
340345
BD
BD+26 3915
Distance
23.82
Distance ly
77.7
last precise pa
230.1
last precise sep
0.62
 
 
ORBITAL ELEMENTS
 
 
Period (P)210.09y Periastron (T)1937.47y Semi-major axis (a)1.421a
Eccentricity (e)0.15 Inclination (i)108° Longitude of periastron (ω)130.8°
Node (Ω)154.3° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1996
label rho theta
2000 0.623 288.4
2001 0.602 285.6
2002 0.582 282.6
2003 0.563 279.3
2004 0.546 275.9
2005 0.531 272.2
2006 0.517 268.4
2007 0.506 264.3
2008 0.496 260.1
2009 0.490 255.8
2010 0.485 251.3
2011 0.484 246.8
2012 0.485 242.3
2013 0.489 237.8
2014 0.495 233.5
2015 0.504 229.2
2016 0.515 225.2
2017 0.529 221.3
2018 0.544 217.6
2019 0.561 214.1
2020 0.580 210.9
2021 0.600 207.8
2022 0.621 205.0
2023 0.643 202.4
2024 0.666 199.9
2025 0.690 197.6
2026 0.715 195.5
2027 0.740 193.5
2028 0.765 191.6
2029 0.791 189.8
2030 0.817 188.2

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






wds20302%2B2651a.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
20302+2651 WOR 9 AB 1996 34 297 0.7 10.50 10.63 OD 203010.77+265035.2
20302+2651 WOR 9 AB 2006 35 268 0.5 10.50 10.63 OD 203010.77+265035.2
20302+2651 WOR 9 AB 2008 36 261 0.5 10.50 10.63 OD 203010.77+265035.2
20302+2651 WOR 9 AB 2009 37 256 0.5 10.50 10.63 NOD 203010.77+265035.2
20302+2651 WOR 9 AB 2016 40 230 0.6 10.50 10.63 M1V NO 203010.63+265033.7

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