11368-1221 BU 456 AB (HD 100922)
11h 36m 49.86s -12° 21' 02.7" P.A. 162.00 sep 1.2 mag 9.56,9.73 Sp G5 dist. 48.19 pc (157.2 l.y.)
| Coord 2000 |
11368-1221 |
|
Discov num |
BU 456 |
|
Comp |
AB |
|
Coord arcsec 2000 |
11 36 49.86 -12 21 02.7 |
|
| Date first |
1877 |
|
Date last |
2017 |
|
Obs |
81 |
|
| Pa first |
68 |
|
Pa last |
162.4 |
|
P.A. Now (θ) |
162.4° |
|
| Sep first |
0.6 |
|
Sep last |
1.17 |
|
Sep. Now (ρ) |
1.17" |
|
| Mag pri |
9.56 |
|
Mag sec |
9.73 |
|
delta mag (ΔM) |
0.17 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+007 |
|
Sec motion ra |
+007 |
|
| Pri motion dec |
-046 |
|
Sec motion dec |
-046 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
11368-1221 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 100922 |
156786 |
11 36 50 -12 21 03 |
BU 456 AB |
2017 |
81 |
162 |
1.2 |
9.56 |
9.73 |
0.17 |
Y |
<=== |
| Show |
|
156786 |
11 36 50 -12 21 03 |
KPP 4375 AC |
2016 |
2 |
290 |
3.7 |
9.50 |
14.60 |
5.10 |
|
|
| Show |
|
|
11 36 50 -12 21 03 |
KPP 4375 BC |
2015 |
1 |
298 |
4.2 |
9.40 |
14.60 |
5.20 |
|
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Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 100922 |
|
Constellation |
Crater |
|
SAO |
156786 |
|
HIP |
56641 |
|
| Tycho2 |
5513-00100-1 |
|
HD |
100922 |
|
ADS |
8239 |
|
BD |
BD-11 3136 |
|
| Distance |
48.19 |
|
Distance ly |
157.2 |
|
ORBITAL ELEMENTS
| Period (P) | 524.3644y | ± 166.3852 |
Periastron (T) | 1913.0886y | ± 2.0987 |
Semi-major axis (a) | 1.44341a | ± 0.29463 |
| Eccentricity (e) | 0.69984 | ± 0.06204 |
Inclination (i) | 53.203° | ± 2.153 |
Longitude of periastron (ω) | 325.708° | ± 2.695 |
| Node (Ω) | 38.139° | ± 5.703 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
154.3 |
1.028 |
| 2001 |
154.9 |
1.038 |
| 2002 |
155.4 |
1.048 |
| 2003 |
156.0 |
1.058 |
| 2004 |
156.5 |
1.067 |
| 2005 |
157.0 |
1.077 |
| 2006 |
157.6 |
1.087 |
| 2007 |
158.1 |
1.097 |
| 2008 |
158.6 |
1.107 |
| 2009 |
159.1 |
1.117 |
| 2010 |
159.6 |
1.126 |
| 2011 |
160.0 |
1.136 |
| 2012 |
160.5 |
1.146 |
| 2013 |
161.0 |
1.156 |
| 2014 |
161.4 |
1.165 |
| 2015 |
161.9 |
1.175 |
| 2016 |
162.3 |
1.185 |
| 2017 |
162.7 |
1.194 |
| 2018 |
163.2 |
1.204 |
| 2019 |
163.6 |
1.213 |
| 2020 |
164.0 |
1.223 |
| 2021 |
164.4 |
1.233 |
| 2022 |
164.8 |
1.242 |
| 2023 |
165.2 |
1.252 |
| 2024 |
165.6 |
1.261 |
| 2025 |
166.0 |
1.270 |
| 2026 |
166.3 |
1.280 |
| 2027 |
166.7 |
1.289 |
| 2028 |
167.1 |
1.299 |
| 2029 |
167.4 |
1.308 |
| 2030 |
167.8 |
1.317 |
|
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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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