22007-5002 I 1450 (HD 208890)
22h 00m 39.40s -50° 02' 07.3" P.A. 349.00 sep 0.8 mag 10.26,9.95 Sp KO+K1 dist. 99.3 pc (323.92 l.y.)
| Coord 2000 |
22007-5002 |
|
Discov num |
I 1450 |
|
Comp |
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Coord arcsec 2000 |
22 00 39.40 -50 02 07.3 |
|
| Date first |
1926 |
|
Date last |
2015 |
|
Obs |
10 |
|
| Pa first |
24 |
|
Pa last |
349.3 |
|
P.A. Now (θ) |
349.3° |
|
| Sep first |
0.7 |
|
Sep last |
0.78 |
|
Sep. Now (ρ) |
0.78" |
|
| Mag pri |
10.26 |
|
Mag sec |
9.95 |
|
delta mag (ΔM) |
0.31 |
|
Spectral class |
KO+K1 (yellow-orange/yellow-orange) |
|
| Pri motion ra |
+030 |
|
Sec motion ra |
+030 |
|
| Pri motion dec |
-049 |
|
Sec motion dec |
-049 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 208890 |
|
Constellation |
Indus |
|
SAO |
247266 |
|
HIP |
108651 |
|
| Tycho2 |
8444-00653-1 |
|
Gaia DR2 |
6558358337359492992 |
|
HD |
208890 |
|
CD |
CD-5013554 |
|
| CP |
CP-5011639 |
|
Distance |
99.3 |
|
Distance ly |
323.92 |
|
ORBITAL ELEMENTS
| Period (P) | 201.75y | ± 10 |
Periastron (T) | 1961.8y | ± 1.5 |
Semi-major axis (a) | 0.599a | ± 0.006 |
| Eccentricity (e) | 0.78 | ± 0.015 |
Inclination (i) | 58.4° | ± 2 |
Longitude of periastron (ω) | 162.8° | ± 3 |
| Node (Ω) | 10.2° | ± 2 |
Notes | n | |
Reference | Doc2016i | |
| Equinox | 2000 | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
342.7 |
0.608 |
| 2001 |
343.3 |
0.620 |
| 2002 |
343.8 |
0.633 |
| 2003 |
344.3 |
0.645 |
| 2004 |
344.8 |
0.657 |
| 2005 |
345.3 |
0.669 |
| 2006 |
345.8 |
0.680 |
| 2007 |
346.2 |
0.692 |
| 2008 |
346.6 |
0.703 |
| 2009 |
347.0 |
0.714 |
| 2010 |
347.5 |
0.725 |
| 2011 |
347.8 |
0.735 |
| 2012 |
348.2 |
0.745 |
| 2013 |
348.6 |
0.756 |
| 2014 |
349.0 |
0.765 |
| 2015 |
349.3 |
0.775 |
| 2016 |
349.7 |
0.785 |
| 2017 |
350.0 |
0.794 |
| 2018 |
350.3 |
0.803 |
| 2019 |
350.7 |
0.812 |
| 2020 |
351.0 |
0.821 |
| 2021 |
351.3 |
0.829 |
| 2022 |
351.6 |
0.838 |
| 2023 |
351.9 |
0.846 |
| 2024 |
352.2 |
0.854 |
| 2025 |
352.5 |
0.862 |
| 2026 |
352.7 |
0.869 |
| 2027 |
353.0 |
0.877 |
| 2028 |
353.3 |
0.884 |
| 2029 |
353.5 |
0.891 |
| 2030 |
353.8 |
0.898 |
|
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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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