09273+0614 STF 1355 (HD 81670)
09h 27m 16.69s +06° 13' 59.0" P.A. 356.00 sep 1.7 mag 7.71,7.76 Sp F7V dist. 54.32 pc (177.19 l.y.)
| Coord 2000 |
09273+0614 |
|
Discov num |
STF1355 |
|
Comp |
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Coord arcsec 2000 |
09 27 16.69 +06 13 59.0 |
|
| Date first |
1822 |
|
Date last |
2021 |
|
Obs |
184 |
|
| Pa first |
328 |
|
Pa last |
356 |
|
P.A. Now (θ) |
356° |
|
| Sep first |
2.7 |
|
Sep last |
1.738 |
|
Sep. Now (ρ) |
1.738" |
|
| Mag pri |
7.71 |
|
Mag sec |
7.76 |
|
delta mag (ΔM) |
0.05 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
-178 |
|
Sec motion ra |
-178 |
|
| Pri motion dec |
-151 |
|
Sec motion dec |
-151 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 81670 |
|
Constellation |
Hydra |
|
SAO |
117704 |
|
HIP |
46367 |
|
| Tycho2 |
0234-00650-1 |
|
Gaia DR2 |
586050112901137920 |
|
HD |
81670 |
|
GC |
13034 |
|
| ADS |
7380 |
|
BD |
BD+06 2177 |
|
Distance |
54.32 |
|
Distance ly |
177.19 |
|
ORBITAL ELEMENTS
| Period (P) | 1073.7339y | ± 484.3263 |
Periastron (T) | 2082.534y | ± 38.8493 |
Semi-major axis (a) | 3.32815a | ± 1.19798 |
| Eccentricity (e) | 0.89032 | ± 0.22301 |
Inclination (i) | 60.16° | ± 9.971 |
Longitude of periastron (ω) | 93.875° | ± 20.929 |
| Node (Ω) | 23.83° | ± 122.349 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
350.7 |
1.944 |
| 2001 |
350.9 |
1.934 |
| 2002 |
351.1 |
1.924 |
| 2003 |
351.4 |
1.914 |
| 2004 |
351.6 |
1.904 |
| 2005 |
351.8 |
1.894 |
| 2006 |
352.1 |
1.884 |
| 2007 |
352.3 |
1.873 |
| 2008 |
352.5 |
1.863 |
| 2009 |
352.8 |
1.852 |
| 2010 |
353.0 |
1.842 |
| 2011 |
353.3 |
1.831 |
| 2012 |
353.5 |
1.820 |
| 2013 |
353.8 |
1.809 |
| 2014 |
354.0 |
1.798 |
| 2015 |
354.3 |
1.786 |
| 2016 |
354.6 |
1.775 |
| 2017 |
354.8 |
1.763 |
| 2018 |
355.1 |
1.752 |
| 2019 |
355.4 |
1.740 |
| 2020 |
355.7 |
1.728 |
| 2021 |
356.0 |
1.715 |
| 2022 |
356.2 |
1.703 |
| 2023 |
356.5 |
1.691 |
| 2024 |
356.8 |
1.678 |
| 2025 |
357.1 |
1.665 |
| 2026 |
357.4 |
1.652 |
| 2027 |
357.8 |
1.639 |
| 2028 |
358.1 |
1.625 |
| 2029 |
358.4 |
1.612 |
| 2030 |
358.7 |
1.598 |
|
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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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