21141+5818 STF 2783 (HD 202519)
21h 14m 04.90s +58° 17' 49.8" P.A. 348.00 sep 0.7 mag 7.71,8.07 Sp A3V dist. 127.88 pc (417.14 l.y.)
| Coord 2000 |
21141+5818 |
|
Discov num |
STF2783 |
|
Comp |
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Coord arcsec 2000 |
21 14 04.90 +58 17 49.8 |
|
| Date first |
1828 |
|
Date last |
2019 |
|
Obs |
95 |
|
| Pa first |
37 |
|
Pa last |
348 |
|
P.A. Now (θ) |
348° |
|
| Sep first |
2.0 |
|
Sep last |
0.658 |
|
Sep. Now (ρ) |
0.658" |
|
| Mag pri |
7.71 |
|
Mag sec |
8.07 |
|
delta mag (ΔM) |
0.36 |
|
Spectral class |
A3V (white) |
|
| Pri motion ra |
-012 |
|
Sec motion ra |
-012 |
|
| Pri motion dec |
-020 |
|
Sec motion dec |
-020 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 202519 |
|
Constellation |
Cepheus |
|
SAO |
33251 |
|
HIP |
104812 |
|
| Tycho2 |
3965-01093-1 |
|
HD |
202519 |
|
GC |
29721 |
|
ADS |
14784 |
|
| BD |
BD+57 2303 |
|
Distance |
127.88 |
|
Distance ly |
417.14 |
|
ORBITAL ELEMENTS
| Period (P) | 1760y | |
Periastron (T) | 1835y | |
Semi-major axis (a) | 1.685a | |
| Eccentricity (e) | 0.22 | |
Inclination (i) | 113.8° | |
Longitude of periastron (ω) | 18.9° | |
| Node (Ω) | 48.3° | |
Notes | | |
Reference | Zir2014a | |
| Equinox | 2000 | |
Last observation | 2011 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
359.7 |
0.715 |
| 2001 |
359.2 |
0.711 |
| 2002 |
358.7 |
0.708 |
| 2003 |
358.3 |
0.705 |
| 2004 |
357.8 |
0.702 |
| 2005 |
357.4 |
0.699 |
| 2006 |
356.9 |
0.696 |
| 2007 |
356.4 |
0.693 |
| 2008 |
355.9 |
0.691 |
| 2009 |
355.5 |
0.688 |
| 2010 |
355.0 |
0.685 |
| 2011 |
354.5 |
0.682 |
| 2012 |
354.0 |
0.679 |
| 2013 |
353.5 |
0.677 |
| 2014 |
353.0 |
0.674 |
| 2015 |
352.5 |
0.671 |
| 2016 |
352.0 |
0.669 |
| 2017 |
351.5 |
0.666 |
| 2018 |
351.0 |
0.664 |
| 2019 |
350.4 |
0.661 |
| 2020 |
349.9 |
0.659 |
| 2021 |
349.4 |
0.656 |
| 2022 |
348.8 |
0.654 |
| 2023 |
348.3 |
0.652 |
| 2024 |
347.8 |
0.649 |
| 2025 |
347.2 |
0.647 |
| 2026 |
346.7 |
0.645 |
| 2027 |
346.1 |
0.643 |
| 2028 |
345.6 |
0.641 |
| 2029 |
345.0 |
0.639 |
| 2030 |
344.4 |
0.637 |
|
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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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