09144+5241 STF 1321 AB (HD 79210)
09h 14m 22.79s +52° 41' 11.8" P.A. 99.00 sep 16.9 mag 7.79,7.88 Sp K7V+M0V dist. 5.81 pc (18.95 l.y.)
Coord 2000 |
09144+5241 |
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Discov num |
STF1321 |
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Comp |
AB |
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Coord arcsec 2000 |
09 14 22.79 +52 41 11.8 |
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Date first |
1821 |
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Date last |
2019 |
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Obs |
479 |
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Pa first |
44 |
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Pa last |
99.1 |
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P.A. Now (θ) |
99.1° |
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Sep first |
21.1 |
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Sep last |
16.902 |
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Sep. Now (ρ) |
16.902" |
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Mag pri |
7.79 |
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Mag sec |
7.88 |
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delta mag (ΔM) |
0.09 |
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Spectral class |
K7V+M0V (yellow-orange/red) |
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Pri motion ra |
-155 |
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Sec motion ra |
-157 |
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Pri motion dec |
-057 |
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Sec motion dec |
-066 |
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Notes |
N
O
P
(See Notes, Orbital solution, 100-year proper motion) |
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rPM=0.054 (< 0.3, Physical double)
This double is physical.
09144+5241 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 79210 |
27178 |
09 14 23 +52 41 12 |
STF 1321 AB |
2019 |
479 |
99 |
16.9 |
7.79 |
7.88 |
0.09 |
Y |
<=== |
Show |
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09 14 23 +52 41 12 |
STF 1321 AC |
2010 |
4 |
64 |
145.7 |
7.79 |
14.53 |
6.74 |
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Show |
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09 14 23 +52 41 12 |
STF 1321 AD |
2015 |
8 |
129 |
136.4 |
7.79 |
11.89 |
4.10 |
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Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 79210 |
|
Constellation |
Ursa Major |
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SAO |
27178 |
|
HIP |
45343 |
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Tycho2 |
3806-01814-1 |
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HD |
79210 |
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GC |
12727 |
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ADS |
7251 |
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GL |
Gl 338A |
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BD |
BD+53 1320 |
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Distance |
5.81 |
|
Distance ly |
18.95 |
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ORBITAL ELEMENTS
Period (P) | 1986.3y | ± 246.4 |
Periastron (T) | 1937.2y | ± 23.2 |
Semi-major axis (a) | 25.77a | ± 0.07 |
Eccentricity (e) | 0.241 | ± 0.062 |
Inclination (i) | 38.3° | ± 1.8 |
Longitude of periastron (ω) | 32.1° | ± 6.6 |
Node (Ω) | 48.7° | ± 3.1 |
Notes | n | |
Reference | PkO2020 | |
Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
92.9 |
17.315 |
2001 |
93.2 |
17.299 |
2002 |
93.6 |
17.282 |
2003 |
93.9 |
17.266 |
2004 |
94.2 |
17.251 |
2005 |
94.5 |
17.235 |
2006 |
94.8 |
17.219 |
2007 |
95.1 |
17.203 |
2008 |
95.4 |
17.188 |
2009 |
95.7 |
17.173 |
2010 |
96.0 |
17.158 |
2011 |
96.3 |
17.143 |
2012 |
96.7 |
17.128 |
2013 |
97.0 |
17.113 |
2014 |
97.3 |
17.098 |
2015 |
97.6 |
17.084 |
2016 |
97.9 |
17.069 |
2017 |
98.2 |
17.055 |
2018 |
98.5 |
17.041 |
2019 |
98.9 |
17.027 |
2020 |
99.2 |
17.013 |
2021 |
99.5 |
17.000 |
2022 |
99.8 |
16.986 |
2023 |
100.1 |
16.973 |
2024 |
100.4 |
16.960 |
2025 |
100.8 |
16.947 |
2026 |
101.1 |
16.934 |
2027 |
101.4 |
16.921 |
2028 |
101.7 |
16.909 |
2029 |
102.0 |
16.896 |
2030 |
102.4 |
16.884 |
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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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