Theta1 Orionis C: Difference between revisions

Theta¹ Orionis C
	; Theta1 Orionis C and companions in the Trapezium cluster
Observation data; Epoch J2000 Equinox J2000
Constellation	Orion
Right ascension	05h 35m 16.46375s
Declination	−05° 23′ 22.8486″
Apparent magnitude (V)	5.13
Characteristics
Spectral type	θ1 Orionis C1: O6Vp; θ1 Orionis C2: B0V
U−B color index	−0.95
B−V color index	+0.02
Variable type	suspected
Astrometry
Radial velocity (Rv)	+23.6 ± 2.0 km/s
Proper motion (μ)	RA: −4.13 mas/yr ; Dec.: 6.82 mas/yr
Parallax (π)	2.11 ± 0.41 mas
Distance	410 ± 20 pc
Absolute magnitude (MV)	−4.9
Details
C1
Mass	33 ± 5 M☉
Radius	10.6 ± 1.5 R☉
Luminosity	204,000 L☉
Surface gravity (log g)	4.1 cgs
Temperature	39,000 ± 1,000 K
Rotational velocity (v sin i)	24 ± 3 km/s
Age	2.5 ± 0.5 Myr
C2
Mass	11 ± 5 M☉
Orbit
Primary	C1
Companion	C2
Period (P)	11.05 ± 0.03 yr
Semi-major axis (a)	40.00 ± 3.00″
Eccentricity (e)	0.534 ± 0.050
Inclination (i)	100.7 ± 1.0°
Longitude of the node (Ω)	25.3 ± 1.5°
Argument of periastron (ω); (secondary)	290.9 ± 2.5°
Other designations
	41 Ori C, HR 1895, HD 37022, SAO 132314, HIP 26221, BD–05° 1315C
Database references
SIMBAD	data

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Theta¹ Orionis C (θ¹ Orionis C) is a member of the Trapezium open cluster that lies within the Orion Nebula. The star C is the most massive of the four bright stars at the heart of the cluster. It is an O class blue main sequence star with a B-type main sequence companion. Its high luminosity and large distance (about 1,500 light years) give it an apparent visible magnitude of 5.1.

Theta¹ Orionis consists of multiple components, primarily the four stars of the Trapezium cluster, all within one arc-minute of each other. Theta² Orionis is a more distant grouping of three main stars plus several fainter companions, 1-2 arc-minutes from Theta¹.

Theta¹ C is itself a binary of two massive stars, C1 and C2, plus a very close fainter companion apparently escaping the system.^[9]

Theta¹ Orionis C1 is responsible for generating most of the ultraviolet light that is slowly ionizing (and perhaps photoevaporating) the Orion Nebula. This UV light is also the primary cause of the glow that illuminates the Orion Nebula. The star emits a powerful stellar wind that is a hundred thousand times stronger than the Sun's, and the outpouring gas moves at 1,000 km/s.

References

^ ^a ^b ^c ^d ^e van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600
^ ^a ^b ^c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode:2002yCat.2237....0D.
^ "Science Source Stock Video - Trapezium C1 main sequence star, animation".
^ ^a ^b ^c Balega, Yu. Yu.; Chentsov, E. L.; Leushin, V. V.; Rzaev, A. Kh.; Weigelt, G. (2014). "Young massive binary θ 1 OriC: Radial velocities of components". Astrophysical Bulletin. 69 (1): 46–57. Bibcode:2014AstBu..69...46B. doi:10.1134/S1990341314010052. ISSN 1990-3413. S2CID 120838635.
^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007–2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1: 02025. Bibcode:2009yCat....102025S.
^ Olivares, J.; Sánchez, L. J.; Ruelas-Mayorga, A.; Allen, C.; Costero, R.; Poveda, A. (2013). "Kinematics of the Orion Trapezium Based on Diffracto-Astrometry and Historical Data". The Astronomical Journal. 146 (5): 106. arXiv:1310.0769. Bibcode:2013AJ....146..106O. doi:10.1088/0004-6256/146/5/106. ISSN 0004-6256. S2CID 119110490.
^ ^a ^b Kraus, S.; Weigelt, G.; Balega, Y. Y.; Docobo, J. A.; Hofmann, K.-H.; Preibisch, T.; Schertl, D.; Tamazian, V. S.; Driebe, T.; Ohnaka, K.; Petrov, R.; Schöller, M.; Smith, M. (2009). "Tracing the young massive high-eccentricity binary system θ1Orionis C through periastron passage". Astronomy and Astrophysics. 497 (1): 195–207. arXiv:0902.0365. Bibcode:2009A&A...497..195K. doi:10.1051/0004-6361/200810368. ISSN 0004-6361. S2CID 14555075.
^ ^a ^b ^c ^d ^e ^f ^g Simón-Díaz, S.; Herrero, A.; Esteban, C.; Najarro, F. (2006). "Detailed spectroscopic analysis of the Trapezium cluster stars inside the Orion nebula". Astronomy and Astrophysics. 448 (1): 351–366. arXiv:astro-ph/0510288. Bibcode:2006A&A...448..351S. doi:10.1051/0004-6361:20053066. ISSN 0004-6361. S2CID 16445304.
^ Vitrichenko, E. A.; Lehmann, H.; Klochkova, V.; Bychkova, L.; Bychkov, V. (2010). "Detection of a star escaping from the Orion Trapezium". Astrophysics. 53 (2): 306–308. Bibcode:2010Ap.....53..306V. doi:10.1007/s10511-010-9120-2. ISSN 0571-7256. S2CID 123527966.

[hipparcos-1] van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600

[ducati-2] Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode:2002yCat.2237....0D.

[3] "Science Source Stock Video - Trapezium C1 main sequence star, animation".

[balega2014-4] Balega, Yu. Yu.; Chentsov, E. L.; Leushin, V. V.; Rzaev, A. Kh.; Weigelt, G. (2014). "Young massive binary θ 1 OriC: Radial velocities of components". Astrophysical Bulletin. 69 (1): 46–57. Bibcode:2014AstBu..69...46B. doi:10.1134/S1990341314010052. ISSN 1990-3413. S2CID 120838635.

[gcvs-5] Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007–2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1: 02025. Bibcode:2009yCat....102025S.

[OlivaresSánchez2013-6] Olivares, J.; Sánchez, L. J.; Ruelas-Mayorga, A.; Allen, C.; Costero, R.; Poveda, A. (2013). "Kinematics of the Orion Trapezium Based on Diffracto-Astrometry and Historical Data". The Astronomical Journal. 146 (5): 106. arXiv:1310.0769. Bibcode:2013AJ....146..106O. doi:10.1088/0004-6256/146/5/106. ISSN 0004-6256. S2CID 119110490.

[kraus2009-7] Kraus, S.; Weigelt, G.; Balega, Y. Y.; Docobo, J. A.; Hofmann, K.-H.; Preibisch, T.; Schertl, D.; Tamazian, V. S.; Driebe, T.; Ohnaka, K.; Petrov, R.; Schöller, M.; Smith, M. (2009). "Tracing the young massive high-eccentricity binary system θ1Orionis C through periastron passage". Astronomy and Astrophysics. 497 (1): 195–207. arXiv:0902.0365. Bibcode:2009A&A...497..195K. doi:10.1051/0004-6361/200810368. ISSN 0004-6361. S2CID 14555075.

[Simón-DíazHerrero2006-8] ^ ^a ^b ^c ^d ^e ^f ^g Simón-Díaz, S.; Herrero, A.; Esteban, C.; Najarro, F. (2006). "Detailed spectroscopic analysis of the Trapezium cluster stars inside the Orion nebula". Astronomy and Astrophysics. 448 (1): 351–366. arXiv:astro-ph/0510288. Bibcode:2006A&A...448..351S. doi:10.1051/0004-6361:20053066. ISSN 0004-6361. S2CID 16445304.

[VitrichenkoLehmann2010-9] Vitrichenko, E. A.; Lehmann, H.; Klochkova, V.; Bychkova, L.; Bychkov, V. (2010). "Detection of a star escaping from the Orion Trapezium". Astrophysics. 53 (2): 306–308. Bibcode:2010Ap.....53..306V. doi:10.1007/s10511-010-9120-2. ISSN 0571-7256. S2CID 123527966.

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@@ Line 1: / Line 1: @@
+{{Short description|Multiple star in the constellation Orion}}
+{{for|other stars with this [[Bayer designation]]|theta Orionis{{!}}θ Orionis}}
 {{DISPLAYTITLE:Theta<sup>1</sup> Orionis C}}
 {{Starbox begin
 | name=Theta<sup>1</sup> Orionis C}}
 {{Starbox image |
-  image=[[Image:TrapeziumStars.jpg|250px]] |
+  image=[[Image:TrapeziumStars.jpg|280px]] |
-  caption=Theta<sup>1</sup> Orionis C and companions. }}
+  caption=Theta<sup>1</sup> Orionis C and companions in the Trapezium cluster
+}}
 {{Starbox observe
 | epoch=J2000
+| ra={{RA|05|35|16.46375}}<ref name=hipparcos>{{citation | first=F. | last=van Leeuwen |date=November 2007 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 |arxiv = 0708.1752 | s2cid=18759600 }}</ref>
-| ra=05<sup>h</sup> 35<sup>m</sup> 16.5<sup>s</sup>
-| dec=&minus;05° 23&prime; 24&Prime;
+| dec={{DEC|&minus;05|23|22.8486}}<ref name=hipparcos/>
+| appmag_v=5.13<ref name=ducati>{{cite journal|bibcode=2002yCat.2237....0D|title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system|journal=CDS/ADC Collection of Electronic Catalogues|volume=2237|pages=0|last1=Ducati|first1=J. R.|year=2002}}</ref>
-| appmag_v=5.13
 | constell=[[Orion (constellation)|Orion]] }}
 {{Starbox character
+| class={{nowrap|θ<sup>1</sup> Orionis C1: O6Vp<ref>{{Cite web|url=https://www.sciencesource.com/archive/Trapezium-C1-main-sequence-star--animation-SS273386.html|title = Science Source Stock Video - Trapezium C1 main sequence star, animation}}</ref>}}<br/>
-| class=O6pe V
+θ<sup>1</sup> Orionis C2: B0V<ref name=balega2014>{{cite journal|last1=Balega|first1=Yu. Yu.|last2=Chentsov|first2=E. L.|last3=Leushin|first3=V. V.|last4=Rzaev|first4=A. Kh.|last5=Weigelt|first5=G.|title=Young massive binary θ 1 OriC: Radial velocities of components|journal=Astrophysical Bulletin|volume=69|issue=1|year=2014|pages=46–57|issn=1990-3413|doi=10.1134/S1990341314010052|bibcode=2014AstBu..69...46B|s2cid=120838635}}</ref>
-| b-v=+0.02
+| b-v=+0.02<ref name=ducati/>
-| u-b=&minus;0.88
+| u-b=&minus;0.95<ref name=ducati/>
-| variable=? }}
+| variable=suspected<ref name=gcvs>{{cite journal|bibcode=2009yCat....102025S|title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007–2013)|journal=VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S|volume=1|pages=02025|last1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009|display-authors=etal}}</ref>
+}}
 {{Starbox astrometry
+| radial_v=+23.6 ± 2.0<ref name="OlivaresSánchez2013">{{cite journal|last1=Olivares|first1=J.|last2=Sánchez|first2=L. J.|last3=Ruelas-Mayorga|first3=A.|last4=Allen|first4=C.|last5=Costero|first5=R.|last6=Poveda|first6=A.|title=Kinematics of the Orion Trapezium Based on Diffracto-Astrometry and Historical Data|journal=The Astronomical Journal|volume=146|issue=5|year=2013|pages=106|issn=0004-6256|doi=10.1088/0004-6256/146/5/106|bibcode=2013AJ....146..106O|arxiv = 1310.0769 |s2cid=119110490}}</ref>
-| radial_v=+28
-| prop_mo_ra=&minus;0.92
+| prop_mo_ra=&minus;4.13<ref name=hipparcos/>
-| prop_mo_dec=0.13
+| prop_mo_dec=6.82<ref name=hipparcos/>
 | parallax=2.11
 | p_error=0.41
+| parallax_footnote=<ref name=hipparcos/>
-| absmag_v=&minus;3.2 }}
+| dist_pc=410 ± 20<ref name=kraus2009/>
+| absmag_v=&minus;4.9<ref name="Simón-DíazHerrero2006">{{cite journal|last1=Simón-Díaz|first1=S.|last2=Herrero|first2=A.|last3=Esteban|first3=C.|last4=Najarro|first4=F.|title=Detailed spectroscopic analysis of the Trapezium cluster stars inside the Orion nebula|journal=Astronomy and Astrophysics|volume=448|issue=1|year=2006|pages=351–366|issn=0004-6361|doi=10.1051/0004-6361:20053066|bibcode=2006A&A...448..351S|arxiv=astro-ph/0510288|s2cid=16445304}}</ref>
+}}
 {{Starbox detail
+| component1=C1
-| mass=40
+| mass=33 ± 5<ref name=balega2014/>
-| radius=8
+| radius=10.6 ± 1.5<ref name="Simón-DíazHerrero2006"/>
-| luminosity=251,000
+| luminosity=204,000<ref name="Simón-DíazHerrero2006"/>
-| temperature=40,000
+| temperature=39,000 ± 1,000<ref name="Simón-DíazHerrero2006"/>
-| metal=?
+| metal=
-| rotation=~112 km/s
+| gravity=4.1<ref name="Simón-DíazHerrero2006"/>
-| age=1.2 &times; 10<sup>6</sup> }}
+| rotational_velocity=24 ± 3<ref name="Simón-DíazHerrero2006"/>
+| age_myr=2.5 ± 0.5<ref name="Simón-DíazHerrero2006"/>
+| component2=C2
+| mass2=11 ± 5<ref name=balega2014/>
+}}
+{{Starbox orbit
+| reference=<ref name=kraus2009>{{cite journal|last1=Kraus|first1=S.|last2=Weigelt|first2=G.|last3=Balega|first3=Y. Y.|last4=Docobo|first4=J. A.|last5=Hofmann|first5=K.-H.|last6=Preibisch|first6=T.|last7=Schertl|first7=D.|last8=Tamazian|first8=V. S.|last9=Driebe|first9=T.|last10=Ohnaka|first10=K.|last11=Petrov|first11=R.|last12=Schöller|first12=M.|last13=Smith|first13=M.|title=Tracing the young massive high-eccentricity binary system θ1Orionis C through periastron passage|journal=Astronomy and Astrophysics|volume=497|issue=1|year=2009|pages=195–207|issn=0004-6361|doi=10.1051/0004-6361/200810368|bibcode=2009A&A...497..195K|arxiv = 0902.0365 |s2cid=14555075}}</ref>
+| primary=C1
+| name=C2
+| period=11.05 ± 0.03
+| period_unitless=
+| axis=40.00 ± 3.00
+| axis_unitless=
+| eccentricity=0.534 ± 0.050
+| inclination=100.7 ± 1.0
+| node=25.3 ± 1.5
+| periastron=
+| periarg=290.9 ± 2.5
+| periarg_primary=
+| k1=
+| k2=
+}}
 {{Starbox catalog
-| names=41 Ori C, [[Harvard Revised catalogue|HR]] 1895, [[Henry Draper catalogue|HD]] 37022, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]] 132314, [[New Catalogue of Suspected Variable Stars|NSV]] 2294. }}
+| names=[[Flamsteed designation|41]] Ori C, [[Harvard Revised catalogue|HR]]&nbsp;1895, [[Henry Draper catalogue|HD]]&nbsp;37022, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]]&nbsp;132314, [[Hipparcos catalogue|HIP]]&nbsp;26221, [[Bonner Durchmusterung|BD]]–05°&nbsp;1315C
+}}
 {{Starbox reference |
-  Simbad=HD+37022 }}
+  Simbad=HD+37022
+}}
 {{Starbox end}}
+[[File:GRAVITY discovers new double star in Orion Trapezium Cluster.jpg|thumb|left|θ<sup>1</sup> Orionis C is seen as a double star (right inset) with [[VLTI]] near-[[infrared]] interferometry]]
+'''Theta<sup>1</sup> Orionis C''' (θ<sup>1</sup> Orionis C) is a member of the [[Trapezium (astronomy)|Trapezium]] [[open cluster]] that lies within the [[Orion Nebula]]. The star ''C'' is the most massive of the four bright stars at the heart of the cluster. It is an [[O-type main-sequence star|O class blue main sequence star]] with a B-type [[main sequence]] companion.  Its high luminosity and large distance (about 1,500 [[light year]]s) give it an apparent visible magnitude of 5.1.
+Theta<sup>1</sup> Orionis consists of multiple components, primarily the four stars of the Trapezium cluster, all within one arc-minute of each other.  [[Theta2 Orionis|Theta<sup>2</sup> Orionis]] is a more distant grouping of three main stars plus several fainter companions, 1-2 arc-minutes from Theta<sup>1</sup>.
-'''Theta<sup>1</sup> Orionis C''' (θ<sup>1</sup> Orionis C) is a member of the [[Trapezium (astronomy)|Trapezium]] [[open cluster]] that lies within the [[Orion Nebula]]. The star ''C'' is the most massive of the four bright stars at the heart of the cluster. It is an [[O-type main-sequence star|O class blue main sequence star]] and has the highest surface temperature of any star visible to the naked eye; it is one of the [[List of most luminous stars|most luminous stars known]], with an estimated [[absolute magnitude]] in visible wavelengths of about −3.2. Its high luminosity and large distance (about 1,500 [[light year]]s) give it an apparent visible magnitude of 5.1.
+Theta<sup>1</sup> C is itself a binary of two massive stars, C1 and C2, plus a very close fainter companion apparently escaping the system.<ref name="VitrichenkoLehmann2010">{{cite journal|last1=Vitrichenko|first1=E. A.|last2=Lehmann|first2=H.|last3=Klochkova|first3=V.|last4=Bychkova|first4=L.|last5=Bychkov|first5=V.|title=Detection of a star escaping from the Orion Trapezium|journal=Astrophysics|volume=53|issue=2|year=2010|pages=306–308|issn=0571-7256|doi=10.1007/s10511-010-9120-2|bibcode=2010Ap.....53..306V|s2cid=123527966}}</ref>
-This star is responsible for generating most of the [[ultraviolet]] light that is slowly [[Ionization|ionizing]] (and perhaps [[photoevaporation|photoevaporating]]) the Orion Nebula. This UV light is also the primary cause of the glow that illuminates the Orion Nebula. The star emits a powerful [[stellar wind]] that is a hundred thousand times stronger than the [[Sun]]'s, and the outpouring gas moves at 1,000&nbsp;km/s.
+Theta<sup>1</sup> Orionis C1 is responsible for generating most of the [[ultraviolet]] light that is slowly [[Ionization|ionizing]] (and perhaps [[photoevaporation|photoevaporating]]) the Orion Nebula. This UV light is also the primary cause of the glow that illuminates the Orion Nebula. The star emits a powerful [[stellar wind]] that is a hundred thousand times stronger than the [[Sun]]'s, and the outpouring gas moves at 1,000&nbsp;km/s.
-Infrared observations of Theta<sup>1</sup> Orionis C have shown that it is actually a close [[Binary star|binary system]]. It also displays optical [[Variable star|variability]] and is a variable [[Astrophysical X-ray source|X-ray source]]. Separate components of the system were resolved in visible light in August 2013 with an [[adaptive optics]] system installed to the [[Magellan Telescopes|Magellan II telescope]].<ref>[http://www.space.com/22467-telescope-takes-sharpest-night-sky-images.html New Telescope Tech Takes Sharpest Night Sky Photos Ever], Mike Wall, 2013.</ref>
-It is expected that this star will expand into a [[red supergiant]] and end its life as a [[supernova]] within a few million years from now.
 ==References==
 {{Reflist}}
-*{{cite journal |last=Gagne |first=Marc |display-authors=etal  |date=1997 |title=Periodic X-Ray Emission from the O7 V Star θ<sup>1</sup> Orionis C |journal=Astrophysical Journal Letters |volume=478 |issue=2 |pages=L87–L90 |doi=10.1086/310558 |bibcode=1997ApJ...478L..87G|arxiv = astro-ph/9701145 }}
-*{{cite journal |last=Walborn |first=N. R. |date=1981 |title=Systematic variations in the spectrum of Theta-1 Orionis C |journal=Astrophysical Journal |volume=243 |issue=1 |pages=L37–L39 |doi=10.1086/183438 |bibcode=1981ApJ...243L..37W}}
-==External links==
-* [http://www.astro.uiuc.edu/~kaler/sow/theta1ori.html Theta-1 Orionis] by [[James B. Kaler|James B. ("Jim") Kaler]].
-* [http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=Tet1+Ori+C SIMBAD entry]
 {{Stars of Orion}}
@@ Line 61: / Line 87: @@
 [[Category:O-type main-sequence stars]]
 [[Category:Orion (constellation)]]
-[[Category:O-type stars]]
+[[Category:B-type main-sequence stars]]
+[[Category:Henry Draper Catalogue objects|037022]]
+[[Category:Bright Star Catalogue objects|1895]]
+[[Category:Durchmusterung objects]]
+[[Category:Hipparcos objects|026221]]

Observation data Epoch J2000 Equinox J2000
Theta¹ Orionis C and companions in the Trapezium cluster
Constellation	Orion
Right ascension	05^h 35^m 16.46375^s^[1]
Declination	−05° 23′ 22.8486″^[1]
Apparent magnitude (V)	5.13^[2]
Characteristics
Spectral type	θ¹ Orionis C1: O6Vp^[3] θ¹ Orionis C2: B0V^[4]
U−B color index	−0.95^[2]
B−V color index	+0.02^[2]
Variable type	suspected^[5]
Astrometry

Radial velocity (R_v)	+23.6 ± 2.0^[6] km/s
Proper motion (μ)	RA: −4.13^[1] mas/yr Dec.: 6.82^[1] mas/yr
Parallax (π)	2.11 ± 0.41 mas^[1]
Distance	410 ± 20^[7] pc
Absolute magnitude (M_V)	−4.9^[8]

Details
C1
Mass	33 ± 5^[4] `M`_☉
Radius	10.6 ± 1.5^[8] `R`_☉
Luminosity	204,000^[8] `L`_☉
Surface gravity (log g)	4.1^[8] cgs
Temperature	39,000 ± 1,000^[8] K
Rotational velocity (v sin i)	24 ± 3^[8] km/s
Age	2.5 ± 0.5^[8] Myr
C2
Mass	11 ± 5^[4] `M`_☉
Orbit^[7]
Primary	C1
Companion	C2
Period (P)	11.05 ± 0.03 yr
Semi-major axis (a)	40.00 ± 3.00″
Eccentricity (e)	0.534 ± 0.050
Inclination (i)	100.7 ± 1.0°
Longitude of the node (Ω)	25.3 ± 1.5°
Argument of periastron (ω) (secondary)	290.9 ± 2.5°
Other designations
41 Ori C, HR 1895, HD 37022, SAO 132314, HIP 26221, BD–05° 1315C
Database references
SIMBAD	data