19043-2132 H N 126 (HD 177166)
19h 04m 20.28s -21° 31' 53.7" P.A. 183.00 sep 1.3 mag 7.87,8.06 Sp F8V dist. 56.37 pc (183.88 l.y.)
Coord 2000 |
19043-2132 |
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Discov num |
H N 126 |
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Comp |
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Coord arcsec 2000 |
19 04 20.28 -21 31 53.7 |
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Date first |
1873 |
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Date last |
2019 |
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Obs |
115 |
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Pa first |
40 |
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Pa last |
182.5 |
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P.A. Now (θ) |
182.5° |
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Sep first |
1.0 |
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Sep last |
1.29 |
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Sep. Now (ρ) |
1.29" |
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Mag pri |
7.87 |
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Mag sec |
8.06 |
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delta mag (ΔM) |
0.19 |
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Spectral class |
F8V (yellow-white) |
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Pri motion ra |
+069 |
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Sec motion ra |
+069 |
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Pri motion dec |
-041 |
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Sec motion dec |
-041 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 177166 |
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Constellation |
Sagittarius |
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SAO |
187634 |
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HIP |
93661 |
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Tycho2 |
6295-01800-1 |
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Gaia DR2 |
4081665892816012288 |
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HD |
177166 |
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GC |
26214 |
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ADS |
11989 |
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BD |
BD-21 5233 |
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Distance |
56.37 |
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Distance ly |
183.88 |
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SUSPECTED ORBITAL ELEMENTS
Identifier | 19043-2132 |
coord_arcsec_2000 | 190420.28-213153.7 |
Period (P) | 502.4462y | ± 153.062 |
Periastron (T) | 1899.245y | ± 4.961 |
Semi-major axis (a) | 1.5812a | ± 0.37083 |
Eccentricity (e) | 0.58771 | ± 0.05546 |
Inclination (i) | 128.551° | ± 4.939 |
Longitude of periastron (ω) | 112.445° | ± 11.706 |
Node (Ω) | 72.483° | ± 4.166 |
Notes | | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
193.4 |
1.237 |
2001 |
192.8 |
1.239 |
2002 |
192.2 |
1.242 |
2003 |
191.6 |
1.245 |
2004 |
191.0 |
1.247 |
2005 |
190.4 |
1.250 |
2006 |
189.9 |
1.252 |
2007 |
189.3 |
1.255 |
2008 |
188.7 |
1.258 |
2009 |
188.1 |
1.260 |
2010 |
187.6 |
1.263 |
2011 |
187.0 |
1.265 |
2012 |
186.5 |
1.268 |
2013 |
185.9 |
1.271 |
2014 |
185.3 |
1.274 |
2015 |
184.8 |
1.276 |
2016 |
184.2 |
1.279 |
2017 |
183.7 |
1.282 |
2018 |
183.1 |
1.284 |
2019 |
182.6 |
1.287 |
2020 |
182.0 |
1.290 |
2021 |
181.5 |
1.293 |
2022 |
181.0 |
1.296 |
2023 |
180.4 |
1.298 |
2024 |
179.9 |
1.301 |
2025 |
179.4 |
1.304 |
2026 |
178.8 |
1.307 |
2027 |
178.3 |
1.310 |
2028 |
177.8 |
1.313 |
2029 |
177.2 |
1.316 |
2030 |
176.7 |
1.319 |
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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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