13203+1746 A 2166 AB (KR Com)
13h 20m 15.78s +17° 45' 57.7" P.A. 341.00 sep 0.1 mag 7.78,8.38 Sp F8V dist. 83.96 pc (273.88 l.y.)
Coord 2000 |
13203+1746 |
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Discov num |
A 2166 |
|
Comp |
AB |
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Coord arcsec 2000 |
13 20 15.78 +17 45 57.7 |
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Date first |
1910 |
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Date last |
2021 |
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Obs |
54 |
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Pa first |
7 |
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Pa last |
340.5 |
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P.A. Now (θ) |
353.3° |
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Sep first |
0.2 |
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Sep last |
0.085 |
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Sep. Now (ρ) |
0.123" |
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Mag pri |
7.78 |
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Mag sec |
8.38 |
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delta mag (ΔM) |
0.6 |
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Spectral class |
F8V (yellow-white) |
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Pri motion ra |
-005 |
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Sec motion ra |
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Pri motion dec |
-078 |
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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.
13203+1746 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
KR Com |
100517 |
13 20 16 +17 45 58 |
A 2166 AB |
2021 |
54 |
341 |
0.1 |
7.78 |
8.38 |
0.60 |
Y |
<=== |
Show |
|
100517 |
13 20 16 +17 45 58 |
A 2166 AC |
2011 |
1 |
226 |
2.2 |
7.78 |
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Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
KR Com |
|
Constellation |
Coma Berenices |
|
SAO |
100517 |
|
HIP |
65069 |
|
Tycho2 |
1461-00806-1 |
|
HD |
115955 |
|
GC |
18041 |
|
ADS |
8863 |
|
BD |
BD+18 2716 |
|
Distance |
83.96 |
|
Distance ly |
273.88 |
|
SUSPECTED ORBITAL ELEMENTS
Identifier | 13203+1746 A 2166 |
coord_arcsec_2000 | 132015.78+174557.7 |
Period (P) | 11.228y | |
Periastron (T) | 2007.128y | |
Semi-major axis (a) | 0.098a | |
Eccentricity (e) | 0.823 | |
Inclination (i) | 67.8° | |
Longitude of periastron (ω) | 314.9° | |
Node (Ω) | 197.9° | |
Notes | n | |
Reference | Tok2020g | |
Equinox | 2000 | |
Last observation | 2020 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
350.7 |
0.113 |
2001 |
355.2 |
0.129 |
2002 |
358.8 |
0.139 |
2003 |
2.2 |
0.142 |
2004 |
5.6 |
0.137 |
2005 |
9.5 |
0.121 |
2006 |
15.5 |
0.088 |
2007 |
69.6 |
0.010 |
2008 |
286.0 |
0.028 |
2009 |
329.0 |
0.057 |
2010 |
342.4 |
0.085 |
2011 |
349.5 |
0.109 |
2012 |
354.3 |
0.126 |
2013 |
358.1 |
0.137 |
2014 |
1.4 |
0.142 |
2015 |
4.8 |
0.139 |
2016 |
8.5 |
0.125 |
2017 |
13.8 |
0.097 |
2018 |
30.0 |
0.036 |
2019 |
264.0 |
0.025 |
2020 |
323.7 |
0.050 |
2021 |
340.2 |
0.079 |
2022 |
348.1 |
0.104 |
2023 |
353.3 |
0.123 |
2024 |
357.2 |
0.135 |
2025 |
0.7 |
0.141 |
2026 |
4.0 |
0.140 |
2027 |
7.6 |
0.130 |
2028 |
12.3 |
0.106 |
2029 |
22.6 |
0.056 |
2030 |
238.2 |
0.024 |
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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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