19316+1747 STF 2536 (HD 231683)
19h 31m 37.80s +17° 46' 58.6" P.A. 120.00 sep 1.8 mag 8.40,11.38 Sp G2V dist. 50.1 pc (163.43 l.y.)
Coord 2000 |
19316+1747 |
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Discov num |
STF2536 |
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Comp |
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Coord arcsec 2000 |
19 31 37.80 +17 46 58.6 |
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Date first |
1829 |
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Date last |
2018 |
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Obs |
79 |
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Pa first |
35 |
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Pa last |
119.8 |
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P.A. Now (θ) |
119.8° |
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Sep first |
1.8 |
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Sep last |
1.814 |
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Sep. Now (ρ) |
1.814" |
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Mag pri |
8.40 |
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Mag sec |
11.38 |
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delta mag (ΔM) |
2.98 |
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Spectral class |
G2V (yellow) |
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Pri motion ra |
-007 |
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Sec motion ra |
+005 |
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Pri motion dec |
-120 |
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Sec motion dec |
-116 |
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Notes |
N
O
(See Notes, Orbital solution) |
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rPM=0.105 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 231683 |
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Constellation |
Sagitta |
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SAO |
104937 |
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HIP |
96037 |
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Tycho2 |
1605-01006-1 |
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Gaia DR2 |
4322958461161693184 |
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HD |
231683 |
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GC |
26971 |
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ADS |
12557 |
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BD |
BD+17 3992 |
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Distance |
50.1 |
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Distance ly |
163.43 |
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ORBITAL ELEMENTS
Period (P) | 945.0599y | ± 467.1613 |
Periastron (T) | 1826.5646y | ± 257.0777 |
Semi-major axis (a) | 2.30225a | ± 0.5778 |
Eccentricity (e) | 0.23045 | ± 0.24109 |
Inclination (i) | 44.176° | ± 10.986 |
Longitude of periastron (ω) | 320.281° | ± 50.824 |
Node (Ω) | 70.606° | ± 53.239 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
113.9 |
1.832 |
2001 |
114.3 |
1.831 |
2002 |
114.7 |
1.830 |
2003 |
115.1 |
1.828 |
2004 |
115.5 |
1.827 |
2005 |
116.0 |
1.825 |
2006 |
116.4 |
1.824 |
2007 |
116.8 |
1.823 |
2008 |
117.2 |
1.822 |
2009 |
117.7 |
1.820 |
2010 |
118.1 |
1.819 |
2011 |
118.5 |
1.818 |
2012 |
118.9 |
1.816 |
2013 |
119.4 |
1.815 |
2014 |
119.8 |
1.814 |
2015 |
120.2 |
1.813 |
2016 |
120.7 |
1.812 |
2017 |
121.1 |
1.810 |
2018 |
121.5 |
1.809 |
2019 |
122.0 |
1.808 |
2020 |
122.4 |
1.807 |
2021 |
122.8 |
1.806 |
2022 |
123.2 |
1.805 |
2023 |
123.7 |
1.804 |
2024 |
124.1 |
1.803 |
2025 |
124.5 |
1.802 |
2026 |
125.0 |
1.801 |
2027 |
125.4 |
1.800 |
2028 |
125.8 |
1.799 |
2029 |
126.3 |
1.798 |
2030 |
126.7 |
1.797 |
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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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