16301+3353 HU 1173 (HD 148909)
16h 30m 03.67s +33° 53' 11.1" P.A. 66.00 sep 0.2 mag 8.91,9.45 Sp G5 dist. 210.08 pc (685.28 l.y.)
| Coord 2000 |
16301+3353 |
|
Discov num |
HU 1173 |
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Comp |
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Coord arcsec 2000 |
16 30 03.67 +33 53 11.1 |
|
| Date first |
1905 |
|
Date last |
2016 |
|
Obs |
42 |
|
| Pa first |
69 |
|
Pa last |
66.3 |
|
P.A. Now (θ) |
70.5° |
|
| Sep first |
0.2 |
|
Sep last |
0.244 |
|
Sep. Now (ρ) |
0.257" |
|
| Mag pri |
8.91 |
|
Mag sec |
9.45 |
|
delta mag (ΔM) |
0.54 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
-001 |
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Sec motion ra |
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| Pri motion dec |
+000 |
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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 148909 |
|
Constellation |
Hercules |
|
SAO |
65340 |
|
HIP |
80806 |
|
| Tycho2 |
2584-01149-1 |
|
Gaia DR2 |
1325879120358901120 |
|
HD |
148909 |
|
ADS |
10085 |
|
| BD |
BD+34 2799 |
|
Distance |
210.08 |
|
Distance ly |
685.28 |
|
ORBITAL ELEMENTS
| Period (P) | 110.5y | |
Periastron (T) | 1966.5y | |
Semi-major axis (a) | 0.154a | |
| Eccentricity (e) | 0.75 | |
Inclination (i) | 38° | |
Longitude of periastron (ω) | 208° | |
| Node (Ω) | 47° | |
Notes | n | |
Reference | Hei1997 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
56.1 |
0.238 |
| 2001 |
56.8 |
0.240 |
| 2002 |
57.5 |
0.243 |
| 2003 |
58.1 |
0.245 |
| 2004 |
58.8 |
0.247 |
| 2005 |
59.5 |
0.249 |
| 2006 |
60.1 |
0.250 |
| 2007 |
60.8 |
0.252 |
| 2008 |
61.4 |
0.253 |
| 2009 |
62.0 |
0.254 |
| 2010 |
62.6 |
0.255 |
| 2011 |
63.3 |
0.256 |
| 2012 |
63.9 |
0.257 |
| 2013 |
64.5 |
0.258 |
| 2014 |
65.1 |
0.258 |
| 2015 |
65.7 |
0.259 |
| 2016 |
66.3 |
0.259 |
| 2017 |
66.9 |
0.259 |
| 2018 |
67.5 |
0.259 |
| 2019 |
68.1 |
0.259 |
| 2020 |
68.7 |
0.259 |
| 2021 |
69.3 |
0.258 |
| 2022 |
69.9 |
0.258 |
| 2023 |
70.5 |
0.257 |
| 2024 |
71.1 |
0.256 |
| 2025 |
71.7 |
0.256 |
| 2026 |
72.3 |
0.255 |
| 2027 |
73.0 |
0.253 |
| 2028 |
73.6 |
0.252 |
| 2029 |
74.2 |
0.251 |
| 2030 |
74.9 |
0.249 |
|
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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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