19091+3436 CHR 84 Aa,Ab
19h 09m 04.35s +34° 35' 59.9" P.A. 114.00 sep 0.1 mag 6.89,8.96 Sp G1V dist. 52.33 pc (170.7 l.y.)
Coord 2000 |
19091+3436 |
|
Discov num |
CHR 84 |
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Comp |
Aa,Ab |
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Coord arcsec 2000 |
19 09 04.35 +34 35 59.9 |
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Date first |
1985 |
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Date last |
2014 |
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Obs |
36 |
|
Pa first |
353 |
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Pa last |
113.8 |
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P.A. Now (θ) |
55.2° |
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Sep first |
0.1 |
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Sep last |
0.061 |
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Sep. Now (ρ) |
0.083" |
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Mag pri |
6.89 |
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Mag sec |
8.96 |
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delta mag (ΔM) |
2.07 |
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Spectral class |
G1V (yellow) |
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Pri motion ra |
+056 |
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Sec motion ra |
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Pri motion dec |
+191 |
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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.
19091+3436 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
67879 |
19 09 04 +34 35 60 |
CHR 84 Aa,Ab |
2014 |
36 |
114 |
0.1 |
6.89 |
8.96 |
2.07 |
Y |
<=== |
Show |
HD 178911 |
67879 |
19 09 04 +34 35 60 |
STF 2474 AB |
2019 |
84 |
262 |
16.0 |
6.78 |
7.88 |
1.10 |
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Show |
|
67879 |
19 09 04 +34 35 60 |
WAL 105 AC |
2017 |
5 |
126 |
97.5 |
6.78 |
11.42 |
4.64 |
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Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Lyra |
|
SAO |
67879 |
|
HIP |
94076 |
|
Tycho2 |
2648-02148-1 |
|
Gaia DR2 |
2044341077844183040 |
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HD |
178911 |
|
HR |
7272 |
|
ADS |
12101 |
|
BD |
BD+34 3439 |
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Distance |
52.33 |
|
Distance ly |
170.7 |
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ORBITAL ELEMENTS
Period (P) | 1296.984d (3.55y) | ± 0.355 |
Periastron (T) | 50574.953m (1997.347y) | ± 1.302 |
Semi-major axis (a) | 0.074a | ± 0.002 |
Eccentricity (e) | 0.597 | ± 0.003 |
Inclination (i) | 147.29° | ± 0.99 |
Longitude of periastron (ω) | 83.88° | ± 0.87 |
Node (Ω) | 276.91° | ± 1.45 |
Notes | n | |
Reference | CIA2014a | |
Equinox | 2000 | |
Last observation | 2012 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
336.9 |
0.084 |
2001-01-01 |
141.3 |
0.031 |
2002-01-01 |
40.6 |
0.093 |
2003-01-01 |
1.6 |
0.097 |
2004-01-01 |
306.0 |
0.063 |
2005-01-01 |
70.5 |
0.071 |
2006-01-01 |
22.6 |
0.099 |
2007-01-01 |
342.1 |
0.088 |
2008-01-01 |
194.2 |
0.025 |
2009-01-01 |
45.1 |
0.090 |
2010-01-01 |
5.6 |
0.098 |
2011-01-01 |
314.9 |
0.069 |
2012-01-01 |
78.8 |
0.064 |
2013-01-01 |
26.5 |
0.099 |
2014-01-01 |
346.9 |
0.090 |
2015-01-01 |
244.5 |
0.032 |
2016-01-01 |
50.0 |
0.087 |
2017-01-01 |
9.5 |
0.099 |
2018-01-01 |
322.3 |
0.074 |
2019-01-01 |
89.3 |
0.056 |
2020-01-01 |
30.5 |
0.098 |
2021-01-01 |
351.5 |
0.093 |
2022-01-01 |
272.6 |
0.043 |
2023-01-01 |
55.2 |
0.083 |
2024-01-01 |
13.4 |
0.100 |
2025-01-01 |
328.9 |
0.079 |
2026-01-01 |
103.9 |
0.046 |
2027-01-01 |
34.6 |
0.096 |
2028-01-01 |
355.8 |
0.095 |
2029-01-01 |
289.7 |
0.052 |
2030-01-01 |
61.0 |
0.079 |
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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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