12115+5325 STF 1608 AB (MZ UMa)
12h 11m 27.76s +53° 25' 17.5" P.A. 221.00 sep 13.6 mag 8.11,8.27 Sp K0 dist. 35.45 pc (115.64 l.y.)
Coord 2000 |
12115+5325 |
|
Discov num |
STF1608 |
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Comp |
AB |
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Coord arcsec 2000 |
12 11 27.76 +53 25 17.5 |
|
Date first |
1823 |
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Date last |
2021 |
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Obs |
140 |
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Pa first |
224 |
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Pa last |
220.5 |
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P.A. Now (θ) |
220.5° |
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Sep first |
12.1 |
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Sep last |
13.603 |
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Sep. Now (ρ) |
13.603" |
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Mag pri |
8.11 |
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Mag sec |
8.27 |
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delta mag (ΔM) |
0.16 |
|
Spectral class |
K0 (yellow-orange) |
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Pri motion ra |
-164 |
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Sec motion ra |
-169 |
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Pri motion dec |
-123 |
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Sec motion dec |
-136 |
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Notes |
N
C
V
(See Notes, Has orbit and linear solution, Proper motion indicates physical) |
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rPM=0.064 (< 0.3, Physical double)
This double is physical.
12115+5325 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
MZ UMa |
28287 |
12 11 28 +53 25 18 |
STF 1608 AB |
2021 |
140 |
221 |
13.6 |
8.11 |
8.27 |
0.16 |
Y |
<=== |
Show |
|
28287 |
12 11 28 +53 25 18 |
SHY 233 AC |
1999 |
3 |
117 |
999.9 |
8.10 |
11.27 |
3.17 |
|
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Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
MZ UMa |
|
Constellation |
Ursa Major |
|
SAO |
28287 |
|
HIP |
59431 |
|
Tycho2 |
3834-01089-1 |
|
Gaia DR2 |
1572914025633785728 |
|
HD |
105963 |
|
GC |
16648 |
|
ADS |
8450 |
|
GL |
NN 3712B |
|
BD |
BD+54 1499 |
|
Distance |
35.45 |
|
Distance ly |
115.64 |
|
ORBITAL ELEMENTS
Period (P) | 2236.0301y | ± 817.4875 |
Periastron (T) | 2434.5743y | ± 163.3266 |
Semi-major axis (a) | 19.66795a | ± 9.16357 |
Eccentricity (e) | 0.6409 | ± 0.27401 |
Inclination (i) | 92.932° | ± 1.869 |
Longitude of periastron (ω) | 266.009° | ± 28.895 |
Node (Ω) | 36.653° | ± 1.36 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2014 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
220.8 |
13.317 |
2001 |
220.8 |
13.329 |
2002 |
220.8 |
13.342 |
2003 |
220.8 |
13.354 |
2004 |
220.7 |
13.366 |
2005 |
220.7 |
13.379 |
2006 |
220.7 |
13.391 |
2007 |
220.7 |
13.403 |
2008 |
220.7 |
13.415 |
2009 |
220.7 |
13.427 |
2010 |
220.7 |
13.439 |
2011 |
220.6 |
13.451 |
2012 |
220.6 |
13.463 |
2013 |
220.6 |
13.474 |
2014 |
220.6 |
13.486 |
2015 |
220.6 |
13.498 |
2016 |
220.6 |
13.509 |
2017 |
220.6 |
13.521 |
2018 |
220.5 |
13.532 |
2019 |
220.5 |
13.543 |
2020 |
220.5 |
13.554 |
2021 |
220.5 |
13.566 |
2022 |
220.5 |
13.577 |
2023 |
220.5 |
13.588 |
2024 |
220.5 |
13.599 |
2025 |
220.5 |
13.610 |
2026 |
220.4 |
13.620 |
2027 |
220.4 |
13.631 |
2028 |
220.4 |
13.642 |
2029 |
220.4 |
13.652 |
2030 |
220.4 |
13.663 |
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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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