20203+3924 A 1427 AB
20h 20m 15.22s +39° 24' 11.8" P.A. 132.00 sep 0.2 mag 6.57,8.17 Sp A2V+A5V dist. 180.51 pc (588.82 l.y.)
Coord 2000 |
20203+3924 |
|
Discov num |
A 1427 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 20 15.22 +39 24 11.8 |
|
Date first |
1906 |
|
Date last |
2012 |
|
Obs |
49 |
|
Pa first |
112 |
|
Pa last |
132.4 |
|
P.A. Now (θ) |
152.3° |
|
Sep first |
0.3 |
|
Sep last |
0.19 |
|
Sep. Now (ρ) |
0.146" |
|
Mag pri |
6.57 |
|
Mag sec |
8.17 |
|
delta mag (ΔM) |
1.6 |
|
Spectral class |
A2V+A5V (white/white) |
|
Pri motion ra |
-003 |
|
Sec motion ra |
|
|
Pri motion dec |
-029 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
20203+3924 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
69856 |
20 20 15 +39 24 12 |
A 1427 AB |
2012 |
49 |
132 |
0.2 |
6.57 |
8.17 |
1.60 |
Y |
<=== |
Show |
HD 193702 |
69856 |
20 20 15 +39 24 12 |
STF 2668 AB,C |
2016 |
64 |
280 |
3.5 |
6.34 |
8.49 |
2.15 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
SAO |
69856 |
|
HIP |
100268 |
|
Tycho2 |
3156-02225-1 |
|
Gaia DR2 |
2061463669341204736 |
|
HD |
193702 |
|
HR |
7784 |
|
GC |
28299 |
|
ADS |
13728 |
|
BD |
BD+38 4021 |
|
Distance |
180.51 |
|
Distance ly |
588.82 |
|
ORBITAL ELEMENTS
Period (P) | 82.61y | |
Periastron (T) | 2032.75y | |
Semi-major axis (a) | 0.25a | |
Eccentricity (e) | 0.879 | |
Inclination (i) | 56.1° | |
Longitude of periastron (ω) | 238.3° | |
Node (Ω) | 70.4° | |
Notes | n | |
Reference | Doc2016h | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
118.5 |
0.306 |
2001 |
119.3 |
0.302 |
2002 |
120.1 |
0.297 |
2003 |
120.9 |
0.292 |
2004 |
121.8 |
0.287 |
2005 |
122.7 |
0.282 |
2006 |
123.6 |
0.277 |
2007 |
124.6 |
0.271 |
2008 |
125.6 |
0.265 |
2009 |
126.7 |
0.259 |
2010 |
127.8 |
0.253 |
2011 |
128.9 |
0.246 |
2012 |
130.2 |
0.239 |
2013 |
131.5 |
0.232 |
2014 |
132.9 |
0.225 |
2015 |
134.3 |
0.217 |
2016 |
135.9 |
0.209 |
2017 |
137.7 |
0.201 |
2018 |
139.5 |
0.192 |
2019 |
141.6 |
0.184 |
2020 |
143.9 |
0.175 |
2021 |
146.4 |
0.166 |
2022 |
149.2 |
0.156 |
2023 |
152.3 |
0.146 |
2024 |
155.9 |
0.136 |
2025 |
160.1 |
0.126 |
2026 |
165.1 |
0.116 |
2027 |
171.0 |
0.105 |
2028 |
178.3 |
0.095 |
2029 |
187.3 |
0.084 |
2030 |
199.0 |
0.073 |
2031 |
214.9 |
0.062 |
2032 |
239.9 |
0.046 |
2033 |
343.8 |
0.018 |
2034 |
56.6 |
0.061 |
2035 |
68.5 |
0.097 |
2036 |
74.4 |
0.126 |
2037 |
78.2 |
0.149 |
2038 |
81.1 |
0.170 |
2039 |
83.3 |
0.187 |
2040 |
85.2 |
0.203 |
2041 |
86.9 |
0.217 |
2042 |
88.3 |
0.230 |
2043 |
89.7 |
0.241 |
2044 |
90.8 |
0.252 |
2045 |
91.9 |
0.261 |
2046 |
93.0 |
0.270 |
2047 |
93.9 |
0.278 |
2048 |
94.8 |
0.286 |
2049 |
95.7 |
0.292 |
2050 |
96.5 |
0.299 |
|
|

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

Measures: green=micrometric, blue=interferometric, purple=photographic |
|