19143+1904 STF 2484 (HD 180054)
19h 14m 15.66s +19° 03' 50.3" P.A. 241.00 sep 2.1 mag 7.93,9.51 Sp F8 dist. 67.2 pc (219.21 l.y.)
Coord 2000 |
19143+1904 |
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Discov num |
STF2484 |
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Comp |
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Coord arcsec 2000 |
19 14 15.66 +19 03 50.3 |
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Date first |
1831 |
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Date last |
2017 |
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Obs |
124 |
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Pa first |
218 |
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Pa last |
241 |
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P.A. Now (θ) |
241° |
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Sep first |
2.5 |
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Sep last |
2.109 |
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Sep. Now (ρ) |
2.109" |
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Mag pri |
7.93 |
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Mag sec |
9.51 |
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delta mag (ΔM) |
1.58 |
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Spectral class |
F8 (yellow-white) |
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Pri motion ra |
+032 |
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Sec motion ra |
+032 |
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Pri motion dec |
-027 |
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Sec motion dec |
-027 |
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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 180054 |
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Constellation |
Sagitta |
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SAO |
104635 |
|
HIP |
94520 |
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Tycho2 |
1607-00899-1 |
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Gaia DR2 |
4516054074788081152 |
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HD |
180054 |
|
GC |
26508 |
|
ADS |
12201 |
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BD |
BD+18 3998 |
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Distance |
67.2 |
|
Distance ly |
219.21 |
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ORBITAL ELEMENTS
Period (P) | 1500.4372y | ± 606.2944 |
Periastron (T) | 2113.8041y | ± 111.9268 |
Semi-major axis (a) | 4.31198a | ± 1.87027 |
Eccentricity (e) | 0.88995 | ± 0.25371 |
Inclination (i) | 73.076° | ± 7.289 |
Longitude of periastron (ω) | 272.338° | ± 14.293 |
Node (Ω) | 79.874° | ± 33.941 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
238.1 |
2.187 |
2001 |
238.2 |
2.182 |
2002 |
238.4 |
2.176 |
2003 |
238.5 |
2.171 |
2004 |
238.6 |
2.165 |
2005 |
238.7 |
2.160 |
2006 |
238.9 |
2.154 |
2007 |
239.0 |
2.148 |
2008 |
239.1 |
2.142 |
2009 |
239.3 |
2.136 |
2010 |
239.4 |
2.130 |
2011 |
239.5 |
2.124 |
2012 |
239.6 |
2.118 |
2013 |
239.8 |
2.112 |
2014 |
239.9 |
2.106 |
2015 |
240.0 |
2.099 |
2016 |
240.2 |
2.093 |
2017 |
240.3 |
2.086 |
2018 |
240.5 |
2.079 |
2019 |
240.6 |
2.073 |
2020 |
240.7 |
2.066 |
2021 |
240.9 |
2.059 |
2022 |
241.0 |
2.052 |
2023 |
241.1 |
2.045 |
2024 |
241.3 |
2.037 |
2025 |
241.4 |
2.030 |
2026 |
241.6 |
2.023 |
2027 |
241.7 |
2.015 |
2028 |
241.9 |
2.008 |
2029 |
242.0 |
2.000 |
2030 |
242.2 |
1.992 |
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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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