11499+3754 COU 1129 AB (HD 102804)
11h 49m 52.11s +37° 54' 19.0" P.A. 122.00 sep 0.5 mag 10.58,10.79 Sp G8V dist. 114.16 pc (372.39 l.y.)
Coord 2000 |
11499+3754 |
|
Discov num |
COU1129 |
|
Comp |
AB |
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Coord arcsec 2000 |
11 49 52.11 +37 54 19.0 |
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Date first |
1974 |
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Date last |
2014 |
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Obs |
19 |
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Pa first |
157 |
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Pa last |
121.8 |
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P.A. Now (θ) |
121.8° |
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Sep first |
0.5 |
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Sep last |
0.549 |
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Sep. Now (ρ) |
0.549" |
|
Mag pri |
10.58 |
|
Mag sec |
10.79 |
|
delta mag (ΔM) |
0.21 |
|
Spectral class |
G8V (yellow) |
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Pri motion ra |
-062 |
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Sec motion ra |
-062 |
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Pri motion dec |
-060 |
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Sec motion dec |
-060 |
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Notes |
O
(Orbital solution) |
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This double is physical.
11499+3754 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 102804 |
|
11 49 52 +37 54 19 |
COU 1129 AB |
2014 |
19 |
122 |
0.5 |
10.58 |
10.79 |
0.21 |
Y |
<=== |
Show |
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11 49 52 +37 54 19 |
UR 6 AB,C |
2015 |
8 |
270 |
54.6 |
9.90 |
18.70 |
8.80 |
|
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Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 102804 |
|
Constellation |
Ursa Major |
|
HIP |
57698 |
|
Tycho2 |
3014-00144-1 |
|
Gaia DR2 |
4032888533332585984 |
|
HD |
102804 |
|
BD |
BD+38 2283 |
|
CP |
CP-55 4665 |
|
Distance |
114.16 |
|
Distance ly |
372.39 |
|
ORBITAL ELEMENTS
Period (P) | 450.7y | ± 111.9 |
Periastron (T) | 1973.5y | ± 7.8 |
Semi-major axis (a) | 0.822a | ± 0.129 |
Eccentricity (e) | 0.332 | ± 0.091 |
Inclination (i) | 124.4° | ± 1.6 |
Longitude of periastron (ω) | 338° | ± 10 |
Node (Ω) | 146.9° | ± 1.9 |
Notes | | |
Reference | BAE2021 | |
Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
134.8 |
0.562 |
2001 |
133.9 |
0.561 |
2002 |
133.0 |
0.560 |
2003 |
132.1 |
0.559 |
2004 |
131.2 |
0.557 |
2005 |
130.2 |
0.556 |
2006 |
129.3 |
0.554 |
2007 |
128.4 |
0.552 |
2008 |
127.4 |
0.550 |
2009 |
126.5 |
0.548 |
2010 |
125.5 |
0.546 |
2011 |
124.5 |
0.544 |
2012 |
123.6 |
0.541 |
2013 |
122.6 |
0.539 |
2014 |
121.6 |
0.537 |
2015 |
120.6 |
0.534 |
2016 |
119.6 |
0.531 |
2017 |
118.6 |
0.529 |
2018 |
117.5 |
0.526 |
2019 |
116.5 |
0.523 |
2020 |
115.4 |
0.520 |
2021 |
114.3 |
0.518 |
2022 |
113.3 |
0.515 |
2023 |
112.2 |
0.512 |
2024 |
111.1 |
0.509 |
2025 |
110.0 |
0.506 |
2026 |
108.8 |
0.504 |
2027 |
107.7 |
0.501 |
2028 |
106.5 |
0.498 |
2029 |
105.4 |
0.495 |
2030 |
104.2 |
0.493 |
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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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