21120+2410 STT 430 (HD 201889)
21h 11m 59.52s +24° 10' 05.3" P.A. 193.00 sep 1.4 mag 8.27,10.34 Sp F9V dist. 53.76 pc (175.37 l.y.)
| Coord 2000 |
21120+2410 |
|
Discov num |
STT 430 |
|
Comp |
|
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Coord arcsec 2000 |
21 11 59.52 +24 10 05.3 |
|
| Date first |
1843 |
|
Date last |
2017 |
|
Obs |
43 |
|
| Pa first |
216 |
|
Pa last |
192.7 |
|
P.A. Now (θ) |
192.7° |
|
| Sep first |
1.3 |
|
Sep last |
1.429 |
|
Sep. Now (ρ) |
1.429" |
|
| Mag pri |
8.27 |
|
Mag sec |
10.34 |
|
delta mag (ΔM) |
2.07 |
|
Spectral class |
F9V (yellow-white) |
|
| Pri motion ra |
+440 |
|
Sec motion ra |
+440 |
|
| Pri motion dec |
+109 |
|
Sec motion dec |
+109 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 201889 |
|
Constellation |
Vulpecula |
|
SAO |
89522 |
|
HIP |
104660 |
|
| Tycho2 |
2173-01454-1 |
|
HD |
201889 |
|
GC |
29636 |
|
ADS |
14738 |
|
| BD |
BD+23 4264 |
|
Distance |
53.76 |
|
Distance ly |
175.37 |
|
ORBITAL ELEMENTS
| Period (P) | 2504y | ± 459 |
Periastron (T) | 3132.4y | ± 290 |
Semi-major axis (a) | 4.094a | ± 0.491 |
| Eccentricity (e) | 0.806 | ± 0.018 |
Inclination (i) | 100.9° | ± 1.1 |
Longitude of periastron (ω) | 88.5° | ± 5 |
| Node (Ω) | 113.3° | ± 5 |
Notes | | |
Reference | PkO2018b | |
| Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
194.7 |
1.405 |
| 2001 |
194.6 |
1.405 |
| 2002 |
194.5 |
1.405 |
| 2003 |
194.3 |
1.406 |
| 2004 |
194.2 |
1.406 |
| 2005 |
194.0 |
1.406 |
| 2006 |
193.9 |
1.407 |
| 2007 |
193.8 |
1.407 |
| 2008 |
193.6 |
1.408 |
| 2009 |
193.5 |
1.408 |
| 2010 |
193.4 |
1.408 |
| 2011 |
193.2 |
1.409 |
| 2012 |
193.1 |
1.409 |
| 2013 |
193.0 |
1.410 |
| 2014 |
192.8 |
1.410 |
| 2015 |
192.7 |
1.410 |
| 2016 |
192.5 |
1.411 |
| 2017 |
192.4 |
1.411 |
| 2018 |
192.3 |
1.412 |
| 2019 |
192.1 |
1.412 |
| 2020 |
192.0 |
1.413 |
| 2021 |
191.9 |
1.413 |
| 2022 |
191.7 |
1.414 |
| 2023 |
191.6 |
1.414 |
| 2024 |
191.5 |
1.415 |
| 2025 |
191.3 |
1.415 |
| 2026 |
191.2 |
1.416 |
| 2027 |
191.1 |
1.416 |
| 2028 |
190.9 |
1.417 |
| 2029 |
190.8 |
1.417 |
| 2030 |
190.7 |
1.418 |
| 2031 |
190.5 |
1.418 |
| 2032 |
190.4 |
1.419 |
| 2033 |
190.3 |
1.419 |
| 2034 |
190.1 |
1.420 |
| 2035 |
190.0 |
1.420 |
| 2036 |
189.9 |
1.421 |
| 2037 |
189.7 |
1.422 |
| 2038 |
189.6 |
1.422 |
| 2039 |
189.5 |
1.423 |
| 2040 |
189.3 |
1.423 |
| 2041 |
189.2 |
1.424 |
| 2042 |
189.1 |
1.425 |
| 2043 |
188.9 |
1.425 |
| 2044 |
188.8 |
1.426 |
| 2045 |
188.7 |
1.426 |
| 2046 |
188.5 |
1.427 |
| 2047 |
188.4 |
1.428 |
| 2048 |
188.3 |
1.428 |
| 2049 |
188.1 |
1.429 |
| 2050 |
188.0 |
1.430 |
|
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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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