00203-3246 B 1025 (HD 1620)
00h 20m 18.56s -32° 46' 09.5" P.A. 178.00 sep 0.6 mag 8.83,10.64 Sp G6V dist. 53.3 pc (173.86 l.y.)
| Coord 2000 |
00203-3246 |
|
Discov num |
B 1025 |
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Comp |
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Coord arcsec 2000 |
00 20 18.56 -32 46 09.5 |
|
| Date first |
1928 |
|
Date last |
2019 |
|
Obs |
9 |
|
| Pa first |
163 |
|
Pa last |
177.5 |
|
P.A. Now (θ) |
177.5° |
|
| Sep first |
0.4 |
|
Sep last |
0.582 |
|
Sep. Now (ρ) |
0.582" |
|
| Mag pri |
8.83 |
|
Mag sec |
10.64 |
|
delta mag (ΔM) |
1.81 |
|
Spectral class |
G6V (yellow) |
|
| Pri motion ra |
+260 |
|
Sec motion ra |
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|
| Pri motion dec |
-087 |
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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
| Name |
HD 1620 |
|
Constellation |
Sculptor |
|
SAO |
192468 |
|
HIP |
1625 |
|
| Tycho2 |
6993-00130-1 |
|
Gaia DR2 |
2316176498665292544 |
|
HD |
1620 |
|
CD |
CD-33 95 |
|
| CP |
CP-33 33 |
|
Distance |
53.3 |
|
Distance ly |
173.86 |
|
ORBITAL ELEMENTS
| Period (P) | 126.11y | |
Periastron (T) | 1920.97y | |
Semi-major axis (a) | 0.609a | |
| Eccentricity (e) | 0.544 | |
Inclination (i) | 109.1° | |
Longitude of periastron (ω) | 283.5° | |
| Node (Ω) | 167.2° | |
Notes | n | |
Reference | Hrt2012a | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
16.7 |
0.516 |
| 2001 |
15.6 |
0.524 |
| 2002 |
14.5 |
0.532 |
| 2003 |
13.5 |
0.540 |
| 2004 |
12.6 |
0.547 |
| 2005 |
11.6 |
0.555 |
| 2006 |
10.7 |
0.561 |
| 2007 |
9.8 |
0.568 |
| 2008 |
8.9 |
0.574 |
| 2009 |
8.0 |
0.580 |
| 2010 |
7.1 |
0.585 |
| 2011 |
6.3 |
0.590 |
| 2012 |
5.5 |
0.594 |
| 2013 |
4.6 |
0.598 |
| 2014 |
3.8 |
0.601 |
| 2015 |
3.0 |
0.604 |
| 2016 |
2.2 |
0.606 |
| 2017 |
1.4 |
0.607 |
| 2018 |
0.7 |
0.608 |
| 2019 |
359.9 |
0.608 |
| 2020 |
359.1 |
0.607 |
| 2021 |
358.3 |
0.605 |
| 2022 |
357.5 |
0.603 |
| 2023 |
356.7 |
0.599 |
| 2024 |
355.9 |
0.594 |
| 2025 |
355.0 |
0.589 |
| 2026 |
354.2 |
0.582 |
| 2027 |
353.3 |
0.574 |
| 2028 |
352.4 |
0.564 |
| 2029 |
351.5 |
0.553 |
| 2030 |
350.5 |
0.540 |
|
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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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