05308+0557 STF 728 (32 Ori)
05h 30m 47.06s +05° 56' 53.3" P.A. 44.00 sep 1.3 mag 4.44,5.75 Sp B5V dist. 92.85 pc (302.88 l.y.)
| Coord 2000 |
05308+0557 |
|
Discov num |
STF 728 |
|
Comp |
|
|
Coord arcsec 2000 |
05 30 47.06 +05 56 53.3 |
|
| Date first |
1780 |
|
Date last |
2021 |
|
Obs |
236 |
|
| Pa first |
218 |
|
Pa last |
43.9 |
|
P.A. Now (θ) |
43.9° |
|
| Sep first |
1.5 |
|
Sep last |
1.31 |
|
Sep. Now (ρ) |
1.31" |
|
| Mag pri |
4.44 |
|
Mag sec |
5.75 |
|
delta mag (ΔM) |
1.31 |
|
Spectral class |
B5V (blue-white) |
|
| Pri motion ra |
+005 |
|
Sec motion ra |
+005 |
|
| Pri motion dec |
-042 |
|
Sec motion dec |
-042 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
32 Ori |
|
Constellation |
Orion |
|
SAO |
112849 |
|
HIP |
25813 |
|
| Tycho2 |
0126-01899-1 |
|
Gaia DR2 |
3237714611660197632 |
|
HD |
36267 |
|
HR |
1839 |
|
| GC |
6813 |
|
ADS |
4115 |
|
BD |
BD+05 939 |
|
Flamsteed |
32 Orionis |
|
| Flamsteed name |
32 Ori |
|
Distance |
92.85 |
|
Distance ly |
302.88 |
|
ORBITAL ELEMENTS
| Period (P) | 613.69y | |
Periastron (T) | 2297.03y | |
Semi-major axis (a) | 1.604a | |
| Eccentricity (e) | 0.221 | |
Inclination (i) | 96.6° | |
Longitude of periastron (ω) | 302.5° | |
| Node (Ω) | 217.1° | |
Notes | n | |
Reference | USN1999b | |
| Equinox | 2000 | |
Last observation | 1998 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
46.0 |
1.172 |
| 2001 |
45.9 |
1.182 |
| 2002 |
45.8 |
1.192 |
| 2003 |
45.6 |
1.202 |
| 2004 |
45.5 |
1.212 |
| 2005 |
45.4 |
1.222 |
| 2006 |
45.3 |
1.232 |
| 2007 |
45.2 |
1.242 |
| 2008 |
45.1 |
1.251 |
| 2009 |
45.0 |
1.261 |
| 2010 |
44.9 |
1.270 |
| 2011 |
44.8 |
1.280 |
| 2012 |
44.7 |
1.289 |
| 2013 |
44.6 |
1.299 |
| 2014 |
44.5 |
1.308 |
| 2015 |
44.4 |
1.317 |
| 2016 |
44.3 |
1.326 |
| 2017 |
44.2 |
1.335 |
| 2018 |
44.1 |
1.344 |
| 2019 |
44.0 |
1.353 |
| 2020 |
43.9 |
1.362 |
| 2021 |
43.8 |
1.371 |
| 2022 |
43.7 |
1.379 |
| 2023 |
43.6 |
1.388 |
| 2024 |
43.5 |
1.396 |
| 2025 |
43.4 |
1.405 |
| 2026 |
43.4 |
1.413 |
| 2027 |
43.3 |
1.422 |
| 2028 |
43.2 |
1.430 |
| 2029 |
43.1 |
1.438 |
| 2030 |
43.0 |
1.446 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
WDS 05308+0557 STF 728 (32 Ori) : NOTES
| discov_num |
notes |
refcode |
| STF 728 |
32 Ori. The motion is still practically rectilinear, as represented |
B__1956b |
|
in formulae by van den Bos (1956) and Cester (1964). |
Ces1964a |
|
Uniform disk diameter 0.196 +/- 0.015 mas, |
|
|
Limb darkened diameter 0.200 +/- 0.015 mas, |
|
|
Teff = 15700 +/- 500 K based on SED. |
|
|
Radius is 2.33 +/- 0.25 \rsun. |
CIA2019a |
|
H 1 25. |
MEv2010 |
|
Probably optical. |
B__1962d |
REFERENCES
| refcode |
metd |
author |
reference |
| B__1956b |
orb - |
van den Bos, W.H. |
1956CiUO..115..279V |
| B__1956b |
|
Union Obs. Johannesburg Circ. 115, 279-284, 1956 |
|
| B__1962d |
Ma j |
van den Bos, W.H. |
1962AJ.....67..555V |
| B__1962d |
|
AJ 67, 555, 1962 |
|
| Ces1964a |
orb - |
Cester, B. |
1962MmSAI..35..337C |
| Ces1964a |
|
Mem. Soc. Astron. Ital. 35, 337, 1964 |
|
| CIA2019a |
not j |
Gordon, K.D., Gies, D.R., Schaefer, G.H., Huber, D. & Ireland, M. |
2019ApJ...873...91G |
| CIA2019a |
|
ApJ 869, 37, 2018 |
|
| MEv2010 |
- |
MacEvoy, B. |
................... |
| MEv2010 |
|
private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) |
|
| USN1999b |
orb - |
Seymour, D. & Hartkopf, W. |
1999IAUDS.139Q...2S |
| USN1999b |
|
Inf. Circ. 139, 2, 1999 |
|
DISCOVERER
| idgroup |
discov |
author |
| 1 |
STF |
Struve, F.G.W. |
WDS HISTORIC DATA
| coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
| 05308+0557 |
STF 728 |
|
2007 |
220 |
46 |
1.2 |
4.44 |
5.75 |
B5V |
NOD |
053047.06+055653.3 |
| 05308+0557 |
STF 728 |
|
2008 |
223 |
46 |
1.2 |
4.44 |
5.75 |
B5V |
NOD |
053047.06+055653.3 |
| 05308+0557 |
STF 728 |
|
2011 |
225 |
45 |
1.2 |
4.44 |
5.75 |
B5V |
NOD |
053047.06+055653.3 |
| 05308+0557 |
STF 728 |
|
2012 |
231 |
45 |
1.2 |
4.44 |
5.75 |
B5V |
NOD |
053047.06+055653.3 |
| 05308+0557 |
STF 728 |
|
2013 |
228 |
45 |
1.3 |
4.44 |
5.75 |
B5V |
NOD |
053047.06+055653.3 |
| 05308+0557 |
STF 728 |
|
2015 |
230 |
43 |
1.2 |
4.44 |
5.75 |
B5V |
NO |
053047.06+055653.3 |
| 05308+0557 |
STF 728 |
|
2017 |
232 |
43 |
1.3 |
4.44 |
5.75 |
B5V |
NO |
053047.06+055653.3 |
| 05308+0557 |
STF 728 |
|
2021 |
236 |
44 |
1.3 |
4.44 |
5.75 |
B5V |
NO |
053047.06+055653.3 |
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WDS 05308+0557 STF 728 (32 Ori) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 05308+0557 STF 728 (32 Ori) : MEASURES
No records found.
WDS 05308+0557 (32 Ori) : VIRTUAL EYEPIECE
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WDS 05308+0557 (32 Ori) : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.
