21214+0253 STT 435 (HD 203323)
21h 21m 23.70s +02° 53' 14.6" P.A. 239.00 sep 0.7 mag 8.31,8.20 Sp K0 dist. 198.81 pc (648.52 l.y.)
| Coord 2000 |
21214+0253 |
|
Discov num |
STT 435 |
|
Comp |
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|
Coord arcsec 2000 |
21 21 23.70 +02 53 14.6 |
|
| Date first |
1843 |
|
Date last |
2018 |
|
Obs |
86 |
|
| Pa first |
204 |
|
Pa last |
238.5 |
|
P.A. Now (θ) |
238.5° |
|
| Sep first |
0.5 |
|
Sep last |
0.677 |
|
Sep. Now (ρ) |
0.677" |
|
| Mag pri |
8.31 |
|
Mag sec |
8.20 |
|
delta mag (ΔM) |
0.11 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+008 |
|
Sec motion ra |
+008 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
-007 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 203323 |
|
Constellation |
Equuleus |
|
SAO |
126724 |
|
HIP |
105438 |
|
| Tycho2 |
0532-00819-1 |
|
Gaia DR2 |
2692664329580518656 |
|
HD |
203323 |
|
GC |
29886 |
|
| ADS |
14894 |
|
BD |
BD+02 4346 |
|
Distance |
198.81 |
|
Distance ly |
648.52 |
|
ORBITAL ELEMENTS
| Period (P) | 3542y | ± 110 |
Periastron (T) | 4577.6y | ± 244.1 |
Semi-major axis (a) | 1.52a | ± 0.032 |
| Eccentricity (e) | 0.026 | ± 0.038 |
Inclination (i) | 65.9° | ± 0.3 |
Longitude of periastron (ω) | 359.2° | ± 20.8 |
| Node (Ω) | 122.5° | ± 1 |
Notes | | |
Reference | PkO2018b | |
| Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
236.2 |
0.670 |
| 2001 |
236.4 |
0.671 |
| 2002 |
236.6 |
0.672 |
| 2003 |
236.8 |
0.673 |
| 2004 |
237.0 |
0.674 |
| 2005 |
237.2 |
0.675 |
| 2006 |
237.5 |
0.676 |
| 2007 |
237.7 |
0.677 |
| 2008 |
237.9 |
0.678 |
| 2009 |
238.1 |
0.679 |
| 2010 |
238.3 |
0.679 |
| 2011 |
238.5 |
0.680 |
| 2012 |
238.7 |
0.681 |
| 2013 |
238.9 |
0.682 |
| 2014 |
239.1 |
0.683 |
| 2015 |
239.3 |
0.684 |
| 2016 |
239.5 |
0.686 |
| 2017 |
239.7 |
0.687 |
| 2018 |
239.9 |
0.688 |
| 2019 |
240.1 |
0.689 |
| 2020 |
240.3 |
0.690 |
| 2021 |
240.5 |
0.691 |
| 2022 |
240.7 |
0.692 |
| 2023 |
240.9 |
0.693 |
| 2024 |
241.1 |
0.694 |
| 2025 |
241.3 |
0.695 |
| 2026 |
241.5 |
0.696 |
| 2027 |
241.7 |
0.697 |
| 2028 |
241.9 |
0.698 |
| 2029 |
242.1 |
0.699 |
| 2030 |
242.3 |
0.700 |
|
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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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