11286-4508 I 885 AB (HD 99804)
11h 28m 37.32s -45° 08' 27.4" P.A. 146.00 sep 0.6 mag 7.98,9.90 Sp B0:III dist. 64.1 pc (209.09 l.y.)
Coord 2000 |
11286-4508 |
|
Discov num |
I 885 |
|
Comp |
AB |
|
Coord arcsec 2000 |
11 28 37.32 -45 08 27.4 |
|
Date first |
1910 |
|
Date last |
2021 |
|
Obs |
20 |
|
Pa first |
190 |
|
Pa last |
145.7 |
|
P.A. Now (θ) |
145.7° |
|
Sep first |
0.8 |
|
Sep last |
0.619 |
|
Sep. Now (ρ) |
0.619" |
|
Mag pri |
7.98 |
|
Mag sec |
9.90 |
|
delta mag (ΔM) |
1.92 |
|
Spectral class |
B0:III (blue-white) |
|
Pri motion ra |
-038 |
|
Sec motion ra |
-038 |
|
Pri motion dec |
-021 |
|
Sec motion dec |
-021 |
|
Notes |
O
(Orbital solution) |
|
This double is physical.
11286-4508 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 99804 |
222814 |
11 28 37 -45 08 27 |
I 885 AB |
2021 |
20 |
146 |
0.6 |
7.98 |
9.90 |
1.92 |
Y |
<=== |
Show |
|
222814 |
11 28 37 -45 08 27 |
TOK 280 AC |
2015 |
3 |
353 |
195.9 |
7.87 |
18.60 |
10.73 |
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Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 99804 |
|
Constellation |
Centaurus |
|
SAO |
222814 |
|
HIP |
56004 |
|
Tycho2 |
8214-00439-1 |
|
Gaia DR2 |
5375932022338269952 |
|
HD |
99804 |
|
CD |
CD-44 7343 |
|
CP |
CP-44 5559 |
|
Distance |
64.1 |
|
Distance ly |
209.09 |
|
ORBITAL ELEMENTS
Period (P) | 650y | |
Periastron (T) | 2520y | |
Semi-major axis (a) | 1.69a | |
Eccentricity (e) | 0.589 | |
Inclination (i) | 100.8° | |
Longitude of periastron (ω) | 118.5° | |
Node (Ω) | 8.4° | |
Notes | | |
Reference | USN2002 | |
Equinox | 2000 | |
Last observation | 1995 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
152.2 |
0.597 |
2001 |
151.6 |
0.591 |
2002 |
150.9 |
0.585 |
2003 |
150.2 |
0.579 |
2004 |
149.4 |
0.573 |
2005 |
148.7 |
0.567 |
2006 |
148.0 |
0.561 |
2007 |
147.2 |
0.555 |
2008 |
146.4 |
0.550 |
2009 |
145.6 |
0.544 |
2010 |
144.8 |
0.538 |
2011 |
143.9 |
0.533 |
2012 |
143.1 |
0.528 |
2013 |
142.2 |
0.522 |
2014 |
141.3 |
0.517 |
2015 |
140.4 |
0.512 |
2016 |
139.5 |
0.507 |
2017 |
138.6 |
0.502 |
2018 |
137.6 |
0.497 |
2019 |
136.6 |
0.492 |
2020 |
135.6 |
0.488 |
2021 |
134.6 |
0.483 |
2022 |
133.6 |
0.479 |
2023 |
132.5 |
0.475 |
2024 |
131.5 |
0.471 |
2025 |
130.4 |
0.467 |
2026 |
129.3 |
0.463 |
2027 |
128.1 |
0.460 |
2028 |
127.0 |
0.456 |
2029 |
125.8 |
0.453 |
2030 |
124.7 |
0.450 |
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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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