20329+1142 J 1 AB
20h 32m 52.76s +11° 44' 37.2" P.A. 63.00 sep 2.1 mag 10.04,10.57 Sp K1.6V+K5V
| Coord 2000 |
20329+1142 |
|
Discov num |
J 1 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 32 52.76 +11 44 37.2 |
|
| Date first |
1909 |
|
Date last |
2021 |
|
Obs |
42 |
|
| Pa first |
38 |
|
Pa last |
62.9 |
|
P.A. Now (θ) |
62.9° |
|
| Sep first |
0.9 |
|
Sep last |
2.109 |
|
Sep. Now (ρ) |
2.109" |
|
| Mag pri |
10.04 |
|
Mag sec |
10.57 |
|
delta mag (ΔM) |
0.53 |
|
Spectral class |
K1.6V+K5V (yellow-orange/yellow-orange) |
|
| Pri motion ra |
-054 |
|
Sec motion ra |
-054 |
|
| Pri motion dec |
-021 |
|
Sec motion dec |
-022 |
|
| Notes |
O
(Orbital solution) |
|
rPM=0.017 (< 0.3, Physical double)
This double is physical.
20329+1142 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
20 32 53 +11 44 37 |
J 1 AB |
2021 |
42 |
63 |
2.1 |
10.04 |
10.57 |
0.53 |
Y |
<=== |
| Show |
|
|
20 32 53 +11 44 37 |
UC 4212 AC |
2016 |
5 |
256 |
27.7 |
10.04 |
15.30 |
5.26 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Delphinus |
|
Tycho2 |
1095-00816-1 |
|
Gaia DR2 |
1755396220997391744 |
|
ADS |
13983 |
|
ORBITAL ELEMENTS
| Period (P) | 528.391y | ± 34.998 |
Periastron (T) | 2396.217y | ± 5.49 |
Semi-major axis (a) | 1.5446a | ± 0.1719 |
| Eccentricity (e) | 0.745 | ± 0.1554 |
Inclination (i) | 58.5° | ± 3.4 |
Longitude of periastron (ω) | 228.4° | ± 10.4 |
| Node (Ω) | 38.8° | ± 5.3 |
Notes | | |
Reference | Ole2003d | |
| Equinox | 2000 | |
Last observation | 1991 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
53.0 |
2.046 |
| 2001 |
53.2 |
2.051 |
| 2002 |
53.3 |
2.055 |
| 2003 |
53.4 |
2.060 |
| 2004 |
53.6 |
2.064 |
| 2005 |
53.7 |
2.068 |
| 2006 |
53.8 |
2.073 |
| 2007 |
54.0 |
2.077 |
| 2008 |
54.1 |
2.081 |
| 2009 |
54.2 |
2.085 |
| 2010 |
54.4 |
2.088 |
| 2011 |
54.5 |
2.092 |
| 2012 |
54.6 |
2.096 |
| 2013 |
54.7 |
2.099 |
| 2014 |
54.9 |
2.103 |
| 2015 |
55.0 |
2.106 |
| 2016 |
55.1 |
2.110 |
| 2017 |
55.3 |
2.113 |
| 2018 |
55.4 |
2.116 |
| 2019 |
55.5 |
2.119 |
| 2020 |
55.6 |
2.122 |
| 2021 |
55.8 |
2.125 |
| 2022 |
55.9 |
2.128 |
| 2023 |
56.0 |
2.131 |
| 2024 |
56.1 |
2.134 |
| 2025 |
56.3 |
2.137 |
| 2026 |
56.4 |
2.139 |
| 2027 |
56.5 |
2.142 |
| 2028 |
56.6 |
2.144 |
| 2029 |
56.8 |
2.147 |
| 2030 |
56.9 |
2.149 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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