22473-1609 HU 291 (HD 215696)
22h 47m 20.65s -16° 08' 44.6" P.A. 326.00 sep 2.7 mag 7.55,9.84 Sp G5V dist. 33.96 pc (110.78 l.y.)
| Coord 2000 |
22473-1609 |
|
Discov num |
HU 291 |
|
Comp |
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Coord arcsec 2000 |
22 47 20.65 -16 08 44.6 |
|
| Date first |
1900 |
|
Date last |
2015 |
|
Obs |
33 |
|
| Pa first |
6 |
|
Pa last |
325.5 |
|
P.A. Now (θ) |
325.5° |
|
| Sep first |
2.1 |
|
Sep last |
2.652 |
|
Sep. Now (ρ) |
2.652" |
|
| Mag pri |
7.55 |
|
Mag sec |
9.84 |
|
delta mag (ΔM) |
2.29 |
|
Spectral class |
G5V (yellow) |
|
| Pri motion ra |
+376 |
|
Sec motion ra |
+353 |
|
| Pri motion dec |
-064 |
|
Sec motion dec |
-070 |
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| Notes |
N
O
(See Notes, Orbital solution) |
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rPM=0.062 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 215696 |
|
Constellation |
Aquarius |
|
SAO |
165289 |
|
HIP |
112504 |
|
| Tycho2 |
6387-01322-1 |
|
HD |
215696 |
|
ADS |
16265 |
|
BD |
BD-16 6152 |
|
| Distance |
33.96 |
|
Distance ly |
110.78 |
|
ORBITAL ELEMENTS
| Period (P) | 823.575y | ± 371.1501 |
Periastron (T) | 2066.7346y | ± 22.6478 |
Semi-major axis (a) | 5.76514a | ± 3.37004 |
| Eccentricity (e) | 0.77656 | ± 0.18874 |
Inclination (i) | 102.882° | ± 8.43 |
Longitude of periastron (ω) | 254.048° | ± 14.867 |
| Node (Ω) | 133.029° | ± 5.444 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2014 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
329.7 |
2.699 |
| 2001 |
329.4 |
2.699 |
| 2002 |
329.1 |
2.699 |
| 2003 |
328.9 |
2.698 |
| 2004 |
328.6 |
2.697 |
| 2005 |
328.3 |
2.696 |
| 2006 |
328.0 |
2.694 |
| 2007 |
327.7 |
2.692 |
| 2008 |
327.5 |
2.689 |
| 2009 |
327.2 |
2.686 |
| 2010 |
326.9 |
2.683 |
| 2011 |
326.6 |
2.679 |
| 2012 |
326.3 |
2.675 |
| 2013 |
326.0 |
2.670 |
| 2014 |
325.8 |
2.665 |
| 2015 |
325.5 |
2.659 |
| 2016 |
325.2 |
2.652 |
| 2017 |
324.9 |
2.646 |
| 2018 |
324.6 |
2.638 |
| 2019 |
324.3 |
2.630 |
| 2020 |
324.0 |
2.621 |
| 2021 |
323.7 |
2.612 |
| 2022 |
323.4 |
2.602 |
| 2023 |
323.1 |
2.591 |
| 2024 |
322.8 |
2.579 |
| 2025 |
322.5 |
2.567 |
| 2026 |
322.2 |
2.554 |
| 2027 |
321.9 |
2.540 |
| 2028 |
321.5 |
2.525 |
| 2029 |
321.2 |
2.509 |
| 2030 |
320.9 |
2.492 |
|
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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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