01500-0408 A 2602
01h 50m 02.13s -04° 07' 34.3" P.A. 182.00 sep 0.8 mag 10.40,10.40 Sp K2+K2
| Coord 2000 |
01500-0408 |
|
Discov num |
A 2602 |
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Comp |
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Coord arcsec 2000 |
01 50 02.13 -04 07 34.3 |
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| Date first |
1913 |
|
Date last |
2016 |
|
Obs |
18 |
|
| Pa first |
338 |
|
Pa last |
182 |
|
P.A. Now (θ) |
182° |
|
| Sep first |
0.3 |
|
Sep last |
0.807 |
|
Sep. Now (ρ) |
0.807" |
|
| Mag pri |
10.40 |
|
Mag sec |
10.40 |
|
delta mag (ΔM) |
0 |
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Spectral class |
K2+K2 (yellow-orange/yellow-orange) |
|
| Pri motion ra |
+018 |
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Sec motion ra |
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| Pri motion dec |
-045 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cetus |
|
Tycho2 |
4688-01077-1 |
|
Gaia DR2 |
2504095817674014848 |
|
ADS |
1458 |
|
ORBITAL ELEMENTS
| Period (P) | 1606y | ± 150 |
Periastron (T) | 1976.2y | ± 0.2 |
Semi-major axis (a) | 2.455a | ± 0.15 |
| Eccentricity (e) | 0.868 | ± 0.008 |
Inclination (i) | 82.4° | ± 0.5 |
Longitude of periastron (ω) | 45.3° | ± 0.5 |
| Node (Ω) | 4.5° | ± 0.5 |
Notes | n | |
Reference | Doc2016i | |
| Equinox | 2000 | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
177.6 |
0.463 |
| 2001 |
177.9 |
0.487 |
| 2002 |
178.3 |
0.512 |
| 2003 |
178.6 |
0.535 |
| 2004 |
178.9 |
0.559 |
| 2005 |
179.2 |
0.582 |
| 2006 |
179.4 |
0.605 |
| 2007 |
179.7 |
0.627 |
| 2008 |
179.9 |
0.649 |
| 2009 |
180.1 |
0.671 |
| 2010 |
180.3 |
0.692 |
| 2011 |
180.5 |
0.713 |
| 2012 |
180.6 |
0.734 |
| 2013 |
180.8 |
0.754 |
| 2014 |
181.0 |
0.775 |
| 2015 |
181.1 |
0.795 |
| 2016 |
181.2 |
0.814 |
| 2017 |
181.4 |
0.834 |
| 2018 |
181.5 |
0.853 |
| 2019 |
181.6 |
0.872 |
| 2020 |
181.7 |
0.890 |
| 2021 |
181.8 |
0.909 |
| 2022 |
181.9 |
0.927 |
| 2023 |
182.0 |
0.945 |
| 2024 |
182.1 |
0.963 |
| 2025 |
182.2 |
0.980 |
| 2026 |
182.3 |
0.997 |
| 2027 |
182.4 |
1.015 |
| 2028 |
182.5 |
1.032 |
| 2029 |
182.6 |
1.048 |
| 2030 |
182.7 |
1.065 |
|
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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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