19039+2642 A 2992 (HD 337446)
19h 03m 51.17s +26° 41' 38.1" P.A. 44.00 sep 0.2 mag 10.15,9.58 Sp F8 dist. 154.8 pc (504.96 l.y.)
Coord 2000 |
19039+2642 |
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Discov num |
A 2992 |
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Comp |
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Coord arcsec 2000 |
19 03 51.17 +26 41 38.1 |
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Date first |
1916 |
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Date last |
2016 |
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Obs |
43 |
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Pa first |
60 |
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Pa last |
44.4 |
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P.A. Now (θ) |
36.7° |
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Sep first |
0.2 |
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Sep last |
0.167 |
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Sep. Now (ρ) |
0.167" |
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Mag pri |
10.15 |
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Mag sec |
9.58 |
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delta mag (ΔM) |
0.57 |
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Spectral class |
F8 (yellow-white) |
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Pri motion ra |
-007 |
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Sec motion ra |
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Pri motion dec |
-084 |
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Sec motion dec |
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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 337446 |
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Constellation |
Lyra |
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SAO |
86758 |
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HIP |
93615 |
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Tycho2 |
2130-00956-1 |
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Gaia DR2 |
2036804818991564928 |
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HD |
337446 |
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ADS |
11998 |
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BD |
BD+26 3437 |
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Distance |
154.8 |
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Distance ly |
504.96 |
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ORBITAL ELEMENTS
Period (P) | 99y | ± 4 |
Periastron (T) | 1951.17y | ± 2 |
Semi-major axis (a) | 0.256a | ± 0.022 |
Eccentricity (e) | 0.835 | ± 0.001 |
Inclination (i) | 114.5° | ± 4.5 |
Longitude of periastron (ω) | 255° | ± 1.5 |
Node (Ω) | 125.9° | ± 6 |
Notes | n | |
Reference | Doc2009g | |
Equinox | 2000 | |
Last observation | 1997 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
69.5 |
0.225 |
2001 |
68.4 |
0.223 |
2002 |
67.3 |
0.221 |
2003 |
66.2 |
0.219 |
2004 |
65.0 |
0.217 |
2005 |
63.9 |
0.214 |
2006 |
62.7 |
0.212 |
2007 |
61.4 |
0.209 |
2008 |
60.2 |
0.207 |
2009 |
58.9 |
0.204 |
2010 |
57.6 |
0.202 |
2011 |
56.2 |
0.199 |
2012 |
54.9 |
0.197 |
2013 |
53.4 |
0.194 |
2014 |
52.0 |
0.191 |
2015 |
50.5 |
0.189 |
2016 |
48.9 |
0.186 |
2017 |
47.3 |
0.183 |
2018 |
45.7 |
0.181 |
2019 |
44.0 |
0.178 |
2020 |
42.2 |
0.175 |
2021 |
40.4 |
0.173 |
2022 |
38.6 |
0.170 |
2023 |
36.7 |
0.167 |
2024 |
34.7 |
0.165 |
2025 |
32.7 |
0.162 |
2026 |
30.5 |
0.159 |
2027 |
28.4 |
0.157 |
2028 |
26.1 |
0.154 |
2029 |
23.8 |
0.152 |
2030 |
21.4 |
0.149 |
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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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