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Current system
05308+0557
STF 728
32 Ori


Nearby doubles
27' : 05290+0550
A 2645

60' : 05324+0502
BAL2639

61' : 05329+0648
TDS 177

63' : 05344+0525
HDS 738

67' : 05348+0528
A 2648

69' : 05314+0450
BAL2637

77' : 05310+0440
A 2646AB

78' : 05334+0704
TDS3235

81' : 05315+0438
BAL2638AB

81' : 05272+0658
STF 713

82' : 05255+0538
NSN 557

83' : 05266+0652
SHY 478

84' : 05282+0442
BAL2635AB

86' : 05328+0436
BAL2640

86' : 05353+0504
TDS3245

87' : 05359+0515
BRT2112

88' : 05251+0621
BUP 78AB
Bellatrix

97' : 05331+0727
TDS 178

100' : 05268+0437
BAL2634AB

100' : 05370+0521
GWP 694

101' : 05365+0650
OCC1028

103' : 05376+0607
TOK 256AB

107' : 05355+0716
STF 744

108' : 05247+0459
BAL2633

112' : 05355+0723
J 676

120' : 05372+0446
A 2651AB



Selections
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Binary Systems
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Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

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 2024 Obs 241
Pa first 218 Pa last 44.1 P.A. Now (θ) 44.1°
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° Notesn ReferenceUSN1999b
Equinox2000 Last observation1998 Grade4(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
2031 43.0 1.454
2032 42.9 1.462
2033 42.8 1.469
2034 42.7 1.477
2035 42.6 1.485
2036 42.6 1.492
2037 42.5 1.500
2038 42.4 1.507
2039 42.3 1.514
2040 42.3 1.521
2041 42.2 1.529
2042 42.1 1.536
2043 42.0 1.542
2044 42.0 1.549
2045 41.9 1.556
2046 41.8 1.563
2047 41.8 1.569
2048 41.7 1.576
2049 41.6 1.582
2050 41.6 1.588


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds05308%2B0557a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic