05320-0018 HEI 42 Aa,Ab
05h 32m 00.40s -00° 17' 56.7" P.A. 129.00 sep 0.3 mag 2.41,3.76 Sp O9.5II+ dist. 212.31 pc (692.56 l.y.)
| Coord 2000 |
05320-0018 |
|
Discov num |
HEI 42 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
05 32 00.40 -00 17 56.7 |
|
| Date first |
1978 |
|
Date last |
2019 |
|
Obs |
43 |
|
| Pa first |
147 |
|
Pa last |
129.1 |
|
P.A. Now (θ) |
129.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.332 |
|
Sep. Now (ρ) |
0.332" |
|
| Mag pri |
2.41 |
|
Mag sec |
3.76 |
|
delta mag (ΔM) |
1.35 |
|
Spectral class |
O9.5II+ (blue) |
|
| Pri motion ra |
+002 |
|
Sec motion ra |
+002 |
|
| Pri motion dec |
+001 |
|
Sec motion dec |
+001 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
05320-0018 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
132220 |
05 32 00 -00 17 57 |
HEI 42 Aa,Ab |
2019 |
43 |
129 |
0.3 |
2.41 |
3.76 |
1.35 |
Y |
<=== |
| Show |
|
132220 |
05 32 00 -00 17 57 |
BU 558 AB |
2016 |
10 |
229 |
33.4 |
2.41 |
14.20 |
11.79 |
|
|
| Show |
Mintaka |
132220 |
05 32 00 -00 17 57 |
STFA 14 AC |
2017 |
78 |
4 |
56.2 |
2.41 |
6.83 |
4.42 |
|
|
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Mintaka |
|
Constellation |
Orion |
|
SAO |
132220 |
|
HIP |
25930 |
|
| Tycho2 |
4766-02445-1 |
|
HD |
36486 |
|
HR |
1852 |
|
GC |
6847 |
|
| ADS |
4134 |
|
BD |
BD-00 983 |
|
Bayer |
Delta Orionis |
|
Bayer name |
Del Ori |
|
| Flamsteed |
34 Orionis |
|
Flamsteed name |
34 Ori |
|
FK5 |
206 |
|
Distance |
212.31 |
|
| Distance ly |
692.56 |
|
Bayer greek |
δ Ori |
|
ORBITAL ELEMENTS
| Period (P) | 346y | |
Periastron (T) | 1964.8y | |
Semi-major axis (a) | 0.423a | |
| Eccentricity (e) | 0.812 | |
Inclination (i) | 107° | |
Longitude of periastron (ω) | 260° | |
| Node (Ω) | 148.4° | |
Notes | n | |
Reference | Tok2014a | |
| Equinox | 2000 | |
Last observation | 2013 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
134.7 |
0.300 |
| 2001 |
134.3 |
0.303 |
| 2002 |
134.0 |
0.305 |
| 2003 |
133.7 |
0.307 |
| 2004 |
133.3 |
0.310 |
| 2005 |
133.0 |
0.312 |
| 2006 |
132.7 |
0.314 |
| 2007 |
132.3 |
0.316 |
| 2008 |
132.0 |
0.317 |
| 2009 |
131.7 |
0.319 |
| 2010 |
131.4 |
0.321 |
| 2011 |
131.1 |
0.322 |
| 2012 |
130.8 |
0.324 |
| 2013 |
130.5 |
0.325 |
| 2014 |
130.2 |
0.327 |
| 2015 |
129.9 |
0.328 |
| 2016 |
129.6 |
0.329 |
| 2017 |
129.3 |
0.330 |
| 2018 |
129.0 |
0.331 |
| 2019 |
128.7 |
0.332 |
| 2020 |
128.4 |
0.333 |
| 2021 |
128.2 |
0.334 |
| 2022 |
127.9 |
0.335 |
| 2023 |
127.6 |
0.335 |
| 2024 |
127.3 |
0.336 |
| 2025 |
127.0 |
0.337 |
| 2026 |
126.7 |
0.337 |
| 2027 |
126.5 |
0.338 |
| 2028 |
126.2 |
0.338 |
| 2029 |
125.9 |
0.339 |
| 2030 |
125.6 |
0.339 |
|
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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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