20593+1534 STT 424 AB
20h 59m 16.45s +15° 34' 21.8" P.A. 307.00 sep 0.5 mag 8.43,9.39 Sp A3 dist. 408.16 pc (1331.42 l.y.)
| Coord 2000 |
20593+1534 |
|
Discov num |
STT 424 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 59 16.45 +15 34 21.8 |
|
| Date first |
1845 |
|
Date last |
2009 |
|
Obs |
49 |
|
| Pa first |
325 |
|
Pa last |
307.2 |
|
P.A. Now (θ) |
307.2° |
|
| Sep first |
0.3 |
|
Sep last |
0.498 |
|
Sep. Now (ρ) |
0.498" |
|
| Mag pri |
8.43 |
|
Mag sec |
9.39 |
|
delta mag (ΔM) |
0.96 |
|
Spectral class |
A3 (white) |
|
| Pri motion ra |
+011 |
|
Sec motion ra |
+011 |
|
| Pri motion dec |
-004 |
|
Sec motion dec |
-004 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
20593+1534 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
106732 |
20 59 16 +15 34 22 |
STT 424 AB |
2009 |
49 |
307 |
0.5 |
8.43 |
9.39 |
0.96 |
Y |
<=== |
| Show |
|
106732 |
20 59 16 +15 34 22 |
STT 424 AC |
2015 |
23 |
305 |
33.9 |
8.43 |
10.90 |
2.47 |
|
|
| Show |
HD 199823 |
106732 |
20 59 16 +15 34 22 |
WAL 133 AB,D |
2015 |
16 |
206 |
83.7 |
8.12 |
9.98 |
1.86 |
|
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Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Delphinus |
|
SAO |
106732 |
|
HIP |
103584 |
|
Tycho2 |
1648-00403-1 |
|
| Gaia DR2 |
1763484713854530944 |
|
HD |
199839 |
|
ADS |
14505 |
|
BD |
BD+15 4304 |
|
| Distance |
408.16 |
|
Distance ly |
1331.42 |
|
ORBITAL ELEMENTS
| Period (P) | 1629y | ± 4 |
Periastron (T) | 1686.3y | ± 1.5 |
Semi-major axis (a) | 0.547a | ± 0.001 |
| Eccentricity (e) | 0.223 | ± 0.022 |
Inclination (i) | 121.2° | ± 0.2 |
Longitude of periastron (ω) | 89.9° | ± 0.9 |
| Node (Ω) | 128.2° | ± 1 |
Notes | | |
Reference | PkO2018b | |
| Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
305.7 |
0.529 |
| 2001 |
305.6 |
0.529 |
| 2002 |
305.4 |
0.529 |
| 2003 |
305.3 |
0.530 |
| 2004 |
305.2 |
0.530 |
| 2005 |
305.1 |
0.530 |
| 2006 |
305.0 |
0.531 |
| 2007 |
304.9 |
0.531 |
| 2008 |
304.7 |
0.531 |
| 2009 |
304.6 |
0.531 |
| 2010 |
304.5 |
0.532 |
| 2011 |
304.4 |
0.532 |
| 2012 |
304.3 |
0.532 |
| 2013 |
304.1 |
0.533 |
| 2014 |
304.0 |
0.533 |
| 2015 |
303.9 |
0.533 |
| 2016 |
303.8 |
0.533 |
| 2017 |
303.7 |
0.534 |
| 2018 |
303.6 |
0.534 |
| 2019 |
303.4 |
0.534 |
| 2020 |
303.3 |
0.534 |
| 2021 |
303.2 |
0.535 |
| 2022 |
303.1 |
0.535 |
| 2023 |
303.0 |
0.535 |
| 2024 |
302.9 |
0.535 |
| 2025 |
302.7 |
0.535 |
| 2026 |
302.6 |
0.536 |
| 2027 |
302.5 |
0.536 |
| 2028 |
302.4 |
0.536 |
| 2029 |
302.3 |
0.536 |
| 2030 |
302.2 |
0.536 |
|
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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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