17364+6820 CHR 62 Aa,Ab
17h 36m 42.10s +68° 22' 59.0" P.A. 352.00 sep 0.3 mag 9.15, Sp F5V dist. 4.53 pc (14.78 l.y.)
Coord 2000 |
17364+6820 |
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Discov num |
CHR 62 |
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Comp |
Aa,Ab |
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Coord arcsec 2000 |
17 36 42.10 +68 22 59.0 |
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Date first |
1984 |
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Date last |
1993 |
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Obs |
2 |
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Pa first |
1 |
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Pa last |
352.3 |
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P.A. Now (θ) |
352.3° |
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Sep first |
0.3 |
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Sep last |
0.282 |
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Sep. Now (ρ) |
0.282" |
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Mag pri |
9.15 |
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Mag sec |
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delta mag (ΔM) |
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Spectral class |
F5V (yellow-white) |
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Pri motion ra |
+008 |
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Sec motion ra |
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Pri motion dec |
+081 |
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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.
17364+6820 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
17570 |
17 36 42 +68 22 59 |
CHR 62 Aa,Ab |
1993 |
2 |
352 |
0.3 |
9.15 |
|
|
Y |
<=== |
Show |
HD 160861 |
17570 |
17 36 42 +68 22 59 |
ENG 61 AB |
2013 |
16 |
209 |
177.7 |
8.09 |
9.33 |
1.24 |
|
|
Show |
|
17570 |
17 36 42 +68 22 59 |
STU 10 AC |
2015 |
12 |
95 |
177.3 |
8.09 |
11.38 |
3.29 |
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Show |
|
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17 36 26 +68 20 21 |
STU 10 BC |
1999 |
6 |
62 |
301.6 |
9.33 |
11.38 |
2.05 |
|
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Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Draco |
|
SAO |
17570 |
|
HIP |
86162 |
|
Tycho2 |
4428-01849-1 |
|
Gaia DR2 |
1637692474737869440 |
|
HD |
160861 |
|
GL |
Gl 687 |
|
BD |
BD+68 946 |
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Distance |
4.53 |
|
Distance ly |
14.78 |
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ORBITAL ELEMENTS
Period (P) | 24.5y | |
Periastron (T) | 1961.9y | |
Semi-major axis (a) | 0.102a | |
Eccentricity (e) | 0.9 | |
Inclination (i) | 96° | |
Longitude of periastron (ω) | 260° | |
Node (Ω) | 8.8° | |
Notes | n | |
Reference | Lip1967 | |
Equinox | | |
Last observation | 1966 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
330.7 |
0.032 |
2001 |
322.8 |
0.027 |
2002 |
311.6 |
0.023 |
2003 |
295.7 |
0.019 |
2004 |
275.0 |
0.018 |
2005 |
253.0 |
0.018 |
2006 |
234.6 |
0.021 |
2007 |
221.1 |
0.025 |
2008 |
211.3 |
0.029 |
2009 |
203.7 |
0.032 |
2010 |
196.8 |
0.031 |
2011 |
14.8 |
0.009 |
2012 |
4.2 |
0.046 |
2013 |
1.6 |
0.057 |
2014 |
359.7 |
0.062 |
2015 |
357.9 |
0.064 |
2016 |
356.3 |
0.064 |
2017 |
354.5 |
0.063 |
2018 |
352.7 |
0.061 |
2019 |
350.7 |
0.057 |
2020 |
348.5 |
0.054 |
2021 |
345.9 |
0.049 |
2022 |
342.7 |
0.045 |
2023 |
338.8 |
0.040 |
2024 |
333.8 |
0.035 |
2025 |
327.1 |
0.030 |
2026 |
317.7 |
0.025 |
2027 |
304.3 |
0.021 |
2028 |
285.8 |
0.018 |
2029 |
263.8 |
0.018 |
2030 |
243.2 |
0.019 |
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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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