18591+2230 HU 332 (HD 343521)
18h 59m 03.72s +22° 30' 03.2" P.A. 267.00 sep 0.5 mag 9.72,9.61 Sp G0
| Coord 2000 |
18591+2230 |
|
Discov num |
HU 332 |
|
Comp |
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Coord arcsec 2000 |
18 59 03.72 +22 30 03.2 |
|
| Date first |
1901 |
|
Date last |
2016 |
|
Obs |
19 |
|
| Pa first |
198 |
|
Pa last |
266.9 |
|
P.A. Now (θ) |
266.9° |
|
| Sep first |
0.4 |
|
Sep last |
0.526 |
|
Sep. Now (ρ) |
0.526" |
|
| Mag pri |
9.72 |
|
Mag sec |
9.61 |
|
delta mag (ΔM) |
0.11 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
-017 |
|
Sec motion ra |
-017 |
|
| Pri motion dec |
+002 |
|
Sec motion dec |
+002 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 343521 |
|
Constellation |
Vulpecula |
|
SAO |
86659 |
|
Tycho2 |
2122-01573-1 |
|
| Gaia DR2 |
4520903711321328384 |
|
HD |
343521 |
|
ADS |
11906 |
|
ORBITAL ELEMENTS
| Period (P) | 1773.7y | |
Periastron (T) | 1849.71y | |
Semi-major axis (a) | 2.338a | |
| Eccentricity (e) | 0.906 | |
Inclination (i) | 76.9° | |
Longitude of periastron (ω) | 301.2° | |
| Node (Ω) | 159.7° | |
Notes | | |
Reference | Lin2020 | |
| Equinox | 2000 | |
Last observation | 2016 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
260.6 |
0.470 |
| 2001 |
261.0 |
0.473 |
| 2002 |
261.5 |
0.476 |
| 2003 |
262.0 |
0.478 |
| 2004 |
262.4 |
0.481 |
| 2005 |
262.9 |
0.484 |
| 2006 |
263.3 |
0.487 |
| 2007 |
263.8 |
0.490 |
| 2008 |
264.2 |
0.492 |
| 2009 |
264.7 |
0.495 |
| 2010 |
265.1 |
0.498 |
| 2011 |
265.5 |
0.501 |
| 2012 |
265.9 |
0.504 |
| 2013 |
266.4 |
0.507 |
| 2014 |
266.8 |
0.510 |
| 2015 |
267.2 |
0.513 |
| 2016 |
267.6 |
0.516 |
| 2017 |
268.0 |
0.519 |
| 2018 |
268.4 |
0.522 |
| 2019 |
268.8 |
0.525 |
| 2020 |
269.1 |
0.528 |
| 2021 |
269.5 |
0.531 |
| 2022 |
269.9 |
0.534 |
| 2023 |
270.3 |
0.537 |
| 2024 |
270.6 |
0.540 |
| 2025 |
271.0 |
0.544 |
| 2026 |
271.4 |
0.547 |
| 2027 |
271.7 |
0.550 |
| 2028 |
272.1 |
0.553 |
| 2029 |
272.4 |
0.556 |
| 2030 |
272.8 |
0.559 |
|
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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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