17420+1557 BU 1251 AB (HD 160910)
17h 41m 58.64s +15° 57' 07.8" P.A. 102.00 sep 1.4 mag 5.59,9.38 Sp F3IV dist. 34.86 pc (113.71 l.y.)
Coord 2000 |
17420+1557 |
|
Discov num |
BU 1251 |
|
Comp |
AB |
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Coord arcsec 2000 |
17 41 58.64 +15 57 07.8 |
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Date first |
1891 |
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Date last |
2016 |
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Obs |
43 |
|
Pa first |
79 |
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Pa last |
101.7 |
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P.A. Now (θ) |
101.7° |
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Sep first |
1.4 |
|
Sep last |
1.426 |
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Sep. Now (ρ) |
1.426" |
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Mag pri |
5.59 |
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Mag sec |
9.38 |
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delta mag (ΔM) |
3.79 |
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Spectral class |
F3IV (yellow-white) |
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Pri motion ra |
+001 |
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Sec motion ra |
-007 |
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Pri motion dec |
+114 |
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Sec motion dec |
+103 |
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Notes |
O
(Orbital solution) |
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rPM=0.119 (< 0.3, Physical double)
This double is physical.
17420+1557 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 160910 |
103033 |
17 41 59 +15 57 08 |
BU 1251 AB |
2016 |
43 |
102 |
1.4 |
5.59 |
9.38 |
3.79 |
Y |
<=== |
Show |
|
103033 |
17 41 59 +15 57 08 |
BU 1251 AC |
2015 |
6 |
271 |
154.7 |
5.59 |
14.46 |
8.87 |
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Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 160910 |
|
Constellation |
Hercules |
|
SAO |
103033 |
|
HIP |
86623 |
|
Tycho2 |
1551-02120-1 |
|
Gaia DR2 |
4548845321128406528 |
|
HD |
160910 |
|
HR |
6594 |
|
GC |
24009 |
|
ADS |
10723 |
|
BD |
BD+16 3256 |
|
Distance |
34.86 |
|
Distance ly |
113.71 |
|
ORBITAL ELEMENTS
Period (P) | 144y | |
Periastron (T) | 1949.64y | |
Semi-major axis (a) | 1.04a | |
Eccentricity (e) | 0.42 | |
Inclination (i) | 148.3° | |
Longitude of periastron (ω) | 150° | |
Node (Ω) | 67° | |
Notes | n | |
Reference | Baz1991a | |
Equinox | | |
Last observation | 1989 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
118.0 |
1.244 |
2001 |
116.7 |
1.256 |
2002 |
115.4 |
1.268 |
2003 |
114.1 |
1.280 |
2004 |
112.9 |
1.291 |
2005 |
111.6 |
1.302 |
2006 |
110.4 |
1.313 |
2007 |
109.2 |
1.323 |
2008 |
108.0 |
1.333 |
2009 |
106.8 |
1.343 |
2010 |
105.7 |
1.352 |
2011 |
104.6 |
1.360 |
2012 |
103.4 |
1.368 |
2013 |
102.3 |
1.376 |
2014 |
101.2 |
1.384 |
2015 |
100.1 |
1.391 |
2016 |
99.1 |
1.397 |
2017 |
98.0 |
1.403 |
2018 |
96.9 |
1.409 |
2019 |
95.9 |
1.414 |
2020 |
94.9 |
1.418 |
2021 |
93.8 |
1.423 |
2022 |
92.8 |
1.426 |
2023 |
91.8 |
1.429 |
2024 |
90.7 |
1.432 |
2025 |
89.7 |
1.434 |
2026 |
88.7 |
1.436 |
2027 |
87.7 |
1.437 |
2028 |
86.7 |
1.438 |
2029 |
85.7 |
1.438 |
2030 |
84.7 |
1.437 |
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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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