19071+7204 STT 369 (HD 179729)
19h 07m 06.37s +72° 04' 26.6" P.A. 4.00 sep 0.7 mag 7.82,7.91 Sp F7V dist. 213.22 pc (695.52 l.y.)
Coord 2000 |
19071+7204 |
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Discov num |
STT 369 |
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Comp |
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Coord arcsec 2000 |
19 07 06.37 +72 04 26.6 |
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Date first |
1843 |
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Date last |
2018 |
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Obs |
61 |
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Pa first |
47 |
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Pa last |
4.4 |
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P.A. Now (θ) |
4.4° |
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Sep first |
0.9 |
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Sep last |
0.675 |
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Sep. Now (ρ) |
0.675" |
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Mag pri |
7.82 |
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Mag sec |
7.91 |
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delta mag (ΔM) |
0.09 |
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Spectral class |
F7V (yellow-white) |
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Pri motion ra |
+006 |
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Sec motion ra |
+006 |
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Pri motion dec |
+039 |
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Sec motion dec |
+039 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 179729 |
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Constellation |
Draco |
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SAO |
9323 |
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HIP |
93876 |
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Tycho2 |
4439-00852-1 |
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Gaia DR2 |
2264491480699717632 |
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HD |
179729 |
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ADS |
12113 |
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BD |
BD+71 932 |
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Distance |
213.22 |
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Distance ly |
695.52 |
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ORBITAL ELEMENTS
Period (P) | 1055y | ± 31 |
Periastron (T) | 2676.5y | ± 41.3 |
Semi-major axis (a) | 0.784a | ± 0.016 |
Eccentricity (e) | 0.161 | ± 0.011 |
Inclination (i) | 123.3° | ± 0.5 |
Longitude of periastron (ω) | 262.4° | ± 6.4 |
Node (Ω) | 39.3° | ± 0.4 |
Notes | | |
Reference | PkO2018b | |
Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
11.2 |
0.711 |
2001 |
11.0 |
0.709 |
2002 |
10.8 |
0.708 |
2003 |
10.6 |
0.707 |
2004 |
10.3 |
0.705 |
2005 |
10.1 |
0.704 |
2006 |
9.9 |
0.702 |
2007 |
9.7 |
0.701 |
2008 |
9.4 |
0.699 |
2009 |
9.2 |
0.698 |
2010 |
9.0 |
0.697 |
2011 |
8.7 |
0.695 |
2012 |
8.5 |
0.694 |
2013 |
8.2 |
0.692 |
2014 |
8.0 |
0.691 |
2015 |
7.8 |
0.689 |
2016 |
7.5 |
0.688 |
2017 |
7.3 |
0.686 |
2018 |
7.0 |
0.685 |
2019 |
6.8 |
0.683 |
2020 |
6.6 |
0.682 |
2021 |
6.3 |
0.680 |
2022 |
6.1 |
0.679 |
2023 |
5.8 |
0.677 |
2024 |
5.6 |
0.676 |
2025 |
5.3 |
0.674 |
2026 |
5.1 |
0.673 |
2027 |
4.8 |
0.671 |
2028 |
4.6 |
0.670 |
2029 |
4.3 |
0.668 |
2030 |
4.1 |
0.666 |
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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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