18025+4414 OLE 4 Aa,Ab
18h 02m 30.89s +44° 14' 02.6" P.A. 319.00 sep 0.1 mag 7.31, Sp F5V dist. 81.3 pc (265.2 l.y.)
Coord 2000 |
18025+4414 |
|
Discov num |
OLE 4 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
18 02 30.89 +44 14 02.6 |
|
Date first |
1975 |
|
Date last |
2018 |
|
Obs |
4 |
|
Pa first |
46 |
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Pa last |
319 |
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P.A. Now (θ) |
319° |
|
Sep first |
0.2 |
|
Sep last |
0.075 |
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Sep. Now (ρ) |
0.075" |
|
Mag pri |
7.31 |
|
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 |
-040 |
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Sec motion ra |
|
|
Pri motion dec |
-067 |
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Sec motion dec |
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Notes |
N
(See Notes) |
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Nature of this double is uncertain.
18025+4414 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
47163 |
18 02 31 +44 14 03 |
OLE 4 Aa,Ab |
2018 |
4 |
319 |
0.1 |
7.31 |
|
|
Y |
<=== |
Show |
HD 165170 |
47163 |
18 02 31 +44 14 03 |
BU 1127 AB |
2018 |
95 |
39 |
0.7 |
7.31 |
9.20 |
1.89 |
|
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Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Hercules |
|
SAO |
47163 |
|
HIP |
88350 |
|
Tycho2 |
3114-01159-1 |
|
Gaia DR2 |
2114382335056498432 |
|
HD |
165170 |
|
ADS |
11010 |
|
BD |
BD+44 2812 |
|
Distance |
81.3 |
|
Distance ly |
265.2 |
|
SUSPECTED ORBITAL ELEMENTS
Identifier | 18025+4414 BU 1127 Aa,B |
coord_arcsec_2000 | 180230.89+441402.6 |
Period (P) | 281.47y | |
Periastron (T) | 2070.25y | |
Semi-major axis (a) | 0.75a | |
Eccentricity (e) | 0.298 | |
Inclination (i) | 146.4° | |
Longitude of periastron (ω) | 135.3° | |
Node (Ω) | 73.2° | |
Notes | n | |
Reference | Cve2016c | |
Equinox | 2000 | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
62.3 |
0.806 |
2001 |
61.4 |
0.801 |
2002 |
60.5 |
0.795 |
2003 |
59.6 |
0.789 |
2004 |
58.6 |
0.784 |
2005 |
57.7 |
0.778 |
2006 |
56.7 |
0.772 |
2007 |
55.8 |
0.765 |
2008 |
54.8 |
0.759 |
2009 |
53.8 |
0.753 |
2010 |
52.8 |
0.746 |
2011 |
51.7 |
0.739 |
2012 |
50.7 |
0.733 |
2013 |
49.6 |
0.726 |
2014 |
48.5 |
0.719 |
2015 |
47.4 |
0.712 |
2016 |
46.2 |
0.705 |
2017 |
45.1 |
0.698 |
2018 |
43.9 |
0.690 |
2019 |
42.7 |
0.683 |
2020 |
41.4 |
0.675 |
2021 |
40.2 |
0.668 |
2022 |
38.9 |
0.660 |
2023 |
37.5 |
0.653 |
2024 |
36.2 |
0.645 |
2025 |
34.8 |
0.637 |
2026 |
33.4 |
0.630 |
2027 |
31.9 |
0.622 |
2028 |
30.4 |
0.614 |
2029 |
28.9 |
0.607 |
2030 |
27.3 |
0.599 |
|
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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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