15183+2650 CHR 45 Aa,Ab
15h 18m 20.19s +26° 50' 24.7" P.A. 66.00 sep 0.3 mag 7.10, Sp G0V dist. 35.98 pc (117.37 l.y.)
Coord 2000 |
15183+2650 |
|
Discov num |
CHR 45 |
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Comp |
Aa,Ab |
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Coord arcsec 2000 |
15 18 20.19 +26 50 24.7 |
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Date first |
1984 |
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Date last |
1984 |
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Obs |
1 |
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Pa first |
66 |
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Pa last |
65.5 |
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P.A. Now (θ) |
65.5° |
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Sep first |
0.3 |
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Sep last |
0.339 |
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Sep. Now (ρ) |
0.339" |
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Mag pri |
7.10 |
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Mag sec |
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delta mag (ΔM) |
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Spectral class |
G0V (yellow) |
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Pri motion ra |
+090 |
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Sec motion ra |
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Pri motion dec |
+070 |
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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.
15183+2650 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
83756 |
15 18 20 +26 50 25 |
CHR 45 Aa,Ab |
1984 |
1 |
66 |
0.3 |
7.10 |
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|
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<=== |
Show |
HD 136176 |
83756 |
15 18 20 +26 50 25 |
STF 1932 AB |
2019 |
601 |
267 |
1.6 |
7.32 |
7.41 |
0.09 |
Y |
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Corona Borealis |
|
SAO |
83756 |
|
HIP |
74893 |
|
Tycho2 |
2028-00978-1 |
|
Gaia DR2 |
1271209615518148736 |
|
HD |
136176 |
|
BD |
BD+27 2477 |
|
Distance |
35.98 |
|
Distance ly |
117.37 |
|
SUSPECTED ORBITAL ELEMENTS
Identifier | 15183+2650 STF1932 B |
coord_arcsec_2000 | 151820.25+265025.3 |
Period (P) | 50y | |
Periastron (T) | 1895y | |
Semi-major axis (a) | 0.055a | |
Eccentricity (e) | 0.7 | |
Inclination (i) | 90° | |
Longitude of periastron (ω) | 243.5° | |
Node (Ω) | 135° | |
Notes | n | |
Reference | Mlr1952d | |
Equinox | | |
Last observation | 1950 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
135.0 |
0.045 |
2001 |
135.0 |
0.049 |
2002 |
135.0 |
0.053 |
2003 |
135.0 |
0.055 |
2004 |
135.0 |
0.057 |
2005 |
135.0 |
0.059 |
2006 |
135.0 |
0.059 |
2007 |
135.0 |
0.060 |
2008 |
135.0 |
0.060 |
2009 |
135.0 |
0.060 |
2010 |
135.0 |
0.059 |
2011 |
135.0 |
0.058 |
2012 |
135.0 |
0.057 |
2013 |
135.0 |
0.056 |
2014 |
135.0 |
0.055 |
2015 |
135.0 |
0.053 |
2016 |
135.0 |
0.051 |
2017 |
135.0 |
0.049 |
2018 |
135.0 |
0.047 |
2019 |
135.0 |
0.044 |
2020 |
135.0 |
0.042 |
2021 |
135.0 |
0.039 |
2022 |
135.0 |
0.036 |
2023 |
135.0 |
0.033 |
2024 |
135.0 |
0.030 |
2025 |
135.0 |
0.027 |
2026 |
135.0 |
0.024 |
2027 |
135.0 |
0.021 |
2028 |
135.0 |
0.017 |
2029 |
135.0 |
0.014 |
2030 |
135.0 |
0.010 |
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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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