16137+4638 A 1642 (HD 146327)
16h 13m 43.62s +46° 38' 23.1" P.A. 181.00 sep 0.8 mag 8.87,9.39 Sp G0 dist. 81.77 pc (266.73 l.y.)
| Coord 2000 |
16137+4638 |
|
Discov num |
A 1642 |
|
Comp |
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Coord arcsec 2000 |
16 13 43.62 +46 38 23.1 |
|
| Date first |
1907 |
|
Date last |
2016 |
|
Obs |
58 |
|
| Pa first |
359 |
|
Pa last |
181 |
|
P.A. Now (θ) |
181° |
|
| Sep first |
0.6 |
|
Sep last |
0.824 |
|
Sep. Now (ρ) |
0.824" |
|
| Mag pri |
8.87 |
|
Mag sec |
9.39 |
|
delta mag (ΔM) |
0.52 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
-099 |
|
Sec motion ra |
-099 |
|
| Pri motion dec |
+040 |
|
Sec motion dec |
+040 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 146327 |
|
Constellation |
Hercules |
|
SAO |
45976 |
|
HIP |
79526 |
|
| Tycho2 |
3491-00279-1 |
|
Gaia DR2 |
1386878170041456384 |
|
HD |
146327 |
|
ADS |
9975 |
|
| BD |
BD+47 2317 |
|
Distance |
81.77 |
|
Distance ly |
266.73 |
|
ORBITAL ELEMENTS
| Period (P) | 188.61y | |
Periastron (T) | 1892.3y | |
Semi-major axis (a) | 0.719a | |
| Eccentricity (e) | 0.271 | |
Inclination (i) | 99.3° | |
Longitude of periastron (ω) | 120.4° | |
| Node (Ω) | 176.1° | |
Notes | n | |
Reference | Hrt2001b | |
| Equinox | 2000 | |
Last observation | 1997 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
185.0 |
0.654 |
| 2001 |
184.7 |
0.665 |
| 2002 |
184.3 |
0.676 |
| 2003 |
184.0 |
0.686 |
| 2004 |
183.7 |
0.695 |
| 2005 |
183.4 |
0.705 |
| 2006 |
183.1 |
0.714 |
| 2007 |
182.8 |
0.723 |
| 2008 |
182.5 |
0.731 |
| 2009 |
182.2 |
0.738 |
| 2010 |
181.9 |
0.746 |
| 2011 |
181.7 |
0.753 |
| 2012 |
181.4 |
0.759 |
| 2013 |
181.1 |
0.765 |
| 2014 |
180.9 |
0.771 |
| 2015 |
180.6 |
0.776 |
| 2016 |
180.3 |
0.780 |
| 2017 |
180.1 |
0.785 |
| 2018 |
179.8 |
0.788 |
| 2019 |
179.6 |
0.791 |
| 2020 |
179.4 |
0.794 |
| 2021 |
179.1 |
0.796 |
| 2022 |
178.9 |
0.797 |
| 2023 |
178.6 |
0.798 |
| 2024 |
178.4 |
0.798 |
| 2025 |
178.1 |
0.798 |
| 2026 |
177.9 |
0.797 |
| 2027 |
177.7 |
0.796 |
| 2028 |
177.4 |
0.794 |
| 2029 |
177.2 |
0.791 |
| 2030 |
176.9 |
0.788 |
| 2031 |
176.7 |
0.784 |
| 2032 |
176.4 |
0.779 |
| 2033 |
176.2 |
0.774 |
| 2034 |
175.9 |
0.768 |
| 2035 |
175.7 |
0.761 |
| 2036 |
175.4 |
0.754 |
| 2037 |
175.1 |
0.746 |
| 2038 |
174.8 |
0.737 |
| 2039 |
174.6 |
0.728 |
| 2040 |
174.3 |
0.717 |
| 2041 |
174.0 |
0.707 |
| 2042 |
173.6 |
0.695 |
| 2043 |
173.3 |
0.682 |
| 2044 |
173.0 |
0.669 |
| 2045 |
172.6 |
0.655 |
| 2046 |
172.3 |
0.641 |
| 2047 |
171.9 |
0.625 |
| 2048 |
171.5 |
0.609 |
| 2049 |
171.1 |
0.592 |
| 2050 |
170.6 |
0.574 |
|
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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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