391 Ingeborg
{{Short description|Mars-crossing asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| name = 391 Ingeborg
| background = #FA8072
| image = 000391-asteroid shape model (391) Ingeborg.png
| image_scale =
| caption = Modelled shape of Ingeborg from its lightcurve
| discoverer = M. F. Wolf
| discovery_site = Heidelberg Obs.
| discovered = 1 November 1894
| mpc_name = (391) Ingeborg
| pronounced = {{IPA|de|ˈɪŋəbɔʁk|lang|de-Ingeborg.ogg}}[https://www.germannames.de/wiki/Ingeborg (German Names)]
| alt_names = 1894 BE{{·}}1934 AJ
A894 VB
| named_after = unknown (Ingeborg)
| mp_category = Mars-crosser
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 122.86 yr (44,875 days)
| aphelion = 3.0285 AU
| perihelion = 1.6120 AU
| semimajor = 2.3203 AU
| eccentricity = 0.3052
| period = 3.53 yr (1,291 days)
| mean_anomaly = 292.16°
| mean_motion = {{Deg2DMS|0.2789|sup=ms}} / day
| inclination = 23.202°
| asc_node = 212.88°
| arg_peri = 147.06°
| mars_moid = 0.2350 AU
| dimensions={{val|15.75|3.05}} km
{{val|17.33|1.73}} km
{{val|18.15|0.19}} km
19.63 km {{small|(calculated)}}
| mass=
| density=
| rotation = {{val|16}} h
{{val|26.39|0.02}} h
{{val|26.391|0.006}} h
{{val|26.4145|0.0005}} h
{{val|26.4146|0.0005}} h
{{val|26.4149|0.0001}} h
| albedo = 0.20 {{small|(assumed)}}
{{val|0.282|0.056}}
{{val|0.290|0.110}}
{{val|0.34|0.16}}
{{val|0.495|0.013}}
| spectral_type = Tholen {{=}} S
SMASS {{=}} S
| abs_magnitude = 10.10{{·}}{{val|10.21|0.81}}{{·}}10.80{{·}}10.9{{·}}{{val|10.9|0.2}}
}}
391 Ingeborg (prov. designation: {{mp|A894 VB}} or {{mp|1894 BE}}) is an asteroid and second-largest Mars-crosser on an eccentric orbit from the asteroid belt. It was discovered by German astronomer Max Wolf on 1 November 1894, at the Heidelberg Observatory in southwest Germany. When discovered, it was observed for a couple of weeks, and follow-up observations were made in 1901 and 1904.
Among the many thousands of named minor planets, Ingeborg is one of 120 asteroids, for which no official naming citation has been published. All of these low-numbered asteroids have numbers between {{mp|{{MoMP|164|164 Eva}}}} and {{mp|{{MoMP|1514|1514 Ricouxa}}}} and were discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth.
Ingeborg orbits the Sun in the inner main-belt at a distance of 1.6–3.0 AU once every 3 years and 6 months (1,291 days). Its orbit has an eccentricity of 0.31 and an inclination of 23° with respect to the ecliptic. The stony S-type asteroid has a rotation period of 26.4 hours
According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Ingeborg measures between 15.75 and 18.15 kilometers in diameter and its surface has an albedo between 0.282 and 0.495. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and calculates a diameter of 19.63 kilometers based on an absolute magnitude of 10.9. Other large Mars crossing minor planets include 132 Aethra (43 km), 323 Brucia (36 km), and 2204 Lyyli (25 km).
References
{{reflist|30em|refs=
|type = 2017-09-30 last obs.
|title = JPL Small-Body Database Browser: 391 Ingeborg (1894 BE)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000391
|publisher = Jet Propulsion Laboratory
|access-date = 2 November 2017}}
|title = Dictionary of Minor Planet Names
|last = Schmadel | first = Lutz D.
|publisher = Springer Berlin Heidelberg
|chapter = (391) Ingeborg
|page = 47
|date = 2007
|doi = 10.1007/978-3-540-29925-7_392
|isbn = 978-3-540-00238-3}}
|title = Dictionary of Minor Planet Names – Fifth Revised and Enlarged revision
|chapter = Appendix 11 – Minor Planet Names with Unknown Meaning
|last = Schmadel | first = Lutz D.
|publisher = Springer Berlin Heidelberg
|pages = 927–929
|date = 2007
|isbn = 978-3-540-00238-3
|author-link= Lutz D. Schmadel}}
|title = 391 Ingeborg (1894 BE)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=391
|access-date = 2 November 2017}}
|title = Asteroids and comets rotation curves – (391) Ingeborg
|last = Behrend |first = Raoul
|publisher = Geneva Observatory
|url = http://obswww.unige.ch/~behrend/page2cou.html#000391
|access-date = 2 November 2017}}
|title = LCDB Data for (391) Ingeborg
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=391%7CIngeborg
|access-date = 2 November 2017}}
|display-authors = 6
|first1 = C. R. |last1 = Nugent
|first2 = A. |last2 = Mainzer
|first3 = J. |last3 = Masiero
|first4 = J. |last4 = Bauer
|first5 = R. M. |last5 = Cutri
|first6 = T. |last6 = Grav
|first7 = E. |last7 = Kramer
|first8 = S. |last8 = Sonnett
|first9 = R. |last9 = Stevenson
|first10 = E. L. |last10 = Wright
|date = December 2015
|title = NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos
|journal = The Astrophysical Journal
|volume = 814
|issue = 2
|page = 13
|bibcode = 2015ApJ...814..117N
|doi = 10.1088/0004-637X/814/2/117
|arxiv = 1509.02522
}}
|first1 = V. |last1 = Alí-Lagoa
|first2 = M. |last2 = Delbo'
|date = July 2017
|title = Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data
|journal = Astronomy and Astrophysics
|volume = 603
|page = 8
|bibcode = 2017A&A...603A..55A
|doi = 10.1051/0004-6361/201629917
|arxiv= 1705.10263
}}
|display-authors = 6
|first1 = Fumihiko |last1 = Usui
|first2 = Daisuke |last2 = Kuroda
|first3 = Thomas G. |last3 = Müller
|first4 = Sunao |last4 = Hasegawa
|first5 = Masateru |last5 = Ishiguro
|first6 = Takafumi |last6 = Ootsubo
|first7 = Daisuke |last7 = Ishihara
|first8 = Hirokazu |last8 = Kataza
|first9 = Satoshi |last9 = Takita
|first10 = Shinki |last10 = Oyabu
|first11 = Munetaka |last11 = Ueno
|first12 = Hideo |last12 = Matsuhara
|first13 = Takashi |last13 = Onaka
|date = October 2011
|title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey
|journal = Publications of the Astronomical Society of Japan
|volume = 63
|issue = 5
|pages = 1117–1138
|bibcode = 2011PASJ...63.1117U
|doi = 10.1093/pasj/63.5.1117
|doi-access=
}} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-source=J/PASJ/63/1117/acua_v1&Num=391 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])
|first1 = W. Z. |last1 = Wisniewski
|first2 = T. M. |last2 = Michalowski
|first3 = A. W. |last3 = Harris
|first4 = R. S. |last4 = McMillan
|date = March 1995
|title = Photoelectric Observations of 125 Asteroids
|journal = Abstracts of the Lunar and Planetary Science Conference
|volume = 26
|pages = 1511
|bibcode = 1995LPI....26.1511W
}}
|first1 = R. A. |last1 = Koff
|first2 = S. M. |last2 = Brincat
|first3 = R. D. |last3 = Stephens
|first4 = P. |last4 = Pravec
|date = September 2001
|title = Lightcurve Photometry of Asteroid 391 Ingeborg
|journal = The Minor Planet Bulletin
|volume = 28
|pages = 46–48
|bibcode = 2001MPBu...28...46K
}}
|display-authors = 6
|first1 = J. |last1 = Hanus
|first2 = M. |last2 = Broz
|first3 = J. |last3 = Durech
|first4 = B. D. |last4 = Warner
|first5 = J. |last5 = Brinsfield
|first6 = R. |last6 = Durkee
|first7 = D. |last7 = Higgins
|first8 = R. A. |last8 = Koff
|first9 = J. |last9 = Oey
|first10 = F. |last10 = Pilcher
|first11 = R. |last11 = Stephens
|first12 = L. P. |last12 = Strabla
|first13 = Q. |last13 = Ulisse
|first14 = R. |last14 = Girelli
|date = November 2013
|title = An anisotropic distribution of spin vectors in asteroid families
|journal = Astronomy and Astrophysics
|volume = 559
|page = 19
|bibcode = 2013A&A...559A.134H
|doi = 10.1051/0004-6361/201321993
|arxiv = 1309.4296
}}
|first1 = J. |last1 = Durech
|first2 = J. |last2 = Hanus
|first3 = D. |last3 = Oszkiewicz
|first4 = R. |last4 = Vanco
|date = March 2016
|title = Asteroid models from the Lowell photometric database
|journal = Astronomy and Astrophysics
|volume = 587
|page = 6
|bibcode = 2016A&A...587A..48D
|doi = 10.1051/0004-6361/201527573
|arxiv = 1601.02909
}}
|display-authors = 6
|first1 = J. |last1 = Hanus
|first2 = J. |last2 = Durech
|first3 = D. A. |last3 = Oszkiewicz
|first4 = R. |last4 = Behrend
|first5 = B. |last5 = Carry
|first6 = M. |last6 = Delbo
|first7 = O. |last7 = Adam
|first8 = V. |last8 = Afonina
|first9 = R. |last9 = Anquetin
|first10 = P. |last10 = Antonini
|first11 = L. |last11 = Arnold
|first12 = M. |last12 = Audejean
|first13 = P. |last13 = Aurard
|first14 = M. |last14 = Bachschmidt
|first15 = B. |last15 = Baduel
|first16 = E. |last16 = Barbotin
|first17 = P. |last17 = Barroy
|first18 = P. |last18 = Baudouin
|first19 = L. |last19 = Berard
|first20 = N. |last20 = Berger
|first21 = L. |last21 = Bernasconi
|first22 = J.-G. |last22 = Bosch
|first23 = S. |last23 = Bouley
|first24 = I. |last24 = Bozhinova
|first25 = J. |last25 = Brinsfield
|first26 = L. |last26 = Brunetto
|first27 = G. |last27 = Canaud
|first28 = J. |last28 = Caron
|first29 = F. |last29 = Carrier
|first30 = G. |last30 = Casalnuovo
|first31 = S. |last31 = Casulli
|first32 = M. |last32 = Cerda
|first33 = L. |last33 = Chalamet
|first34 = S. |last34 = Charbonnel
|first35 = B. |last35 = Chinaglia
|first36 = A. |last36 = Cikota
|first37 = F. |last37 = Colas
|first38 = J.-F. |last38 = Coliac
|first39 = A. |last39 = Collet
|first40 = J. |last40 = Coloma
|first41 = M. |last41 = Conjat
|first42 = E. |last42 = Conseil
|first43 = R. |last43 = Costa
|first44 = R. |last44 = Crippa
|first45 = M. |last45 = Cristofanelli
|first46 = Y. |last46 = Damerdji
|last47 = Debackè
|first48 = A. |last48 = re
|first49 = A. |last49 = Decock
|first50 = Q. |last50 = Déhais
|first51 = T. |last51 = Déléage
|first52 = S. |last52 = Delmelle
|first53 = C. |last53 = Demeautis
|first54 = M. |last54 = Drózdz
|first55 = G. |last55 = Dubos
|first56 = T. |last56 = Dulcamara
|first57 = M. |last57 = Dumont
|first58 = R. |last58 = Durkee
|first59 = R. |last59 = Dymock
|first60 = A. |last60 = Escalante del Valle
|first61 = N. |last61 = Esseiva
|first62 = R. |last62 = Esseiva
|first63 = M. |last63 = Esteban
|first64 = T. |last64 = Fauchez
|first65 = M. |last65 = Fauerbach
|first66 = M. |last66 = Fauvaud
|first67 = S. |last67 = Fauvaud
|first68 = E. |last68 = Forné
|first69 = C. |last69 = Fournel
|first70 = D. |last70 = Fradet
|first71 = J. |last71 = Garlitz
|first72 = O. |last72 = Gerteis
|first73 = C. |last73 = Gillier
|first74 = M. |last74 = Gillon
|first75 = R. |last75 = Giraud
|first76 = J.-P. |last76 = Godard
|first77 = R. |last77 = Goncalves
|first78 = Hiroko |last78 = Hamanowa
|first79 = Hiromi |last79 = Hamanowa
|first80 = K. |last80 = Hay
|first81 = S. |last81 = Hellmich
|first82 = S. |last82 = Heterier
|first83 = D. |last83 = Higgins
|first84 = R. |last84 = Hirsch
|first85 = G. |last85 = Hodosan
|first86 = M. |last86 = Hren
|first87 = A. |last87 = Hygate
|first88 = N. |last88 = Innocent
|first89 = H. |last89 = Jacquinot
|first90 = S. |last90 = Jawahar
|first91 = E. |last91 = Jehin
|first92 = L. |last92 = Jerosimic
|first93 = A. |last93 = Klotz
|first94 = W. |last94 = Koff
|first95 = P. |last95 = Korlevic
|first96 = E. |last96 = Kosturkiewicz
|first97 = P. |last97 = Krafft
|first98 = Y. |last98 = Krugly
|first99 = F. |last99 = Kugel
|first100 = O. |last100 = Labrevoir
|first101 = J. |last101 = Lecacheux
|first102 = M. |last102 = Lehký
|first103 = A. |last103 = Leroy
|first104 = B. |last104 = Lesquerbault
|first105 = M. J. |last105 = Lopez-Gonzales
|first106 = M. |last106 = Lutz
|first107 = B. |last107 = Mallecot
|first108 = J. |last108 = Manfroid
|first109 = F. |last109 = Manzini
|first110 = A. |last110 = Marciniak
|first111 = A. |last111 = Martin
|first112 = B. |last112 = Modave
|first113 = R. |last113 = Montaigut
|first114 = J. |last114 = Montier
|first115 = E. |last115 = Morelle
|first116 = B. |last116 = Morton
|first117 = S. |last117 = Mottola
|first118 = R. |last118 = Naves
|first119 = J. |last119 = Nomen
|first120 = J. |last120 = Oey
|first121 = W. |last121 = Ogloza
|first122 = M. |last122 = Paiella
|first123 = H. |last123 = Pallares
|first124 = A. |last124 = Peyrot
|first125 = F. |last125 = Pilcher
|first126 = J.-F. |last126 = Pirenne
|first127 = P. |last127 = Piron
|first128 = M. |last128 = Polinska
|first129 = M. |last129 = Polotto
|first130 = R. |last130 = Poncy
|first131 = J. P. |last131 = Previt
|first132 = F. |last132 = Reignier
|first133 = D. |last133 = Renauld
|first134 = D. |last134 = Ricci
|first135 = F. |last135 = Richard
|first136 = C. |last136 = Rinner
|first137 = V. |last137 = Risoldi
|first138 = D. |last138 = Robilliard
|first139 = D. |last139 = Romeuf
|first140 = G. |last140 = Rousseau
|first141 = R. |last141 = Roy
|first142 = J. |last142 = Ruthroff
|first143 = P. A. |last143 = Salom
|first144 = L. |last144 = Salvador
|first145 = S. |last145 = Sanchez
|first146 = T. |last146 = Santana-Ros
|first147 = A. |last147 = Scholz
|first148 = G. |last148 = Séné
|first149 = B. |last149 = Skiff
|first150 = K. |last150 = Sobkowiak
|first151 = P. |last151 = Sogorb
|first152 = F. |last152 = Soldán
|first153 = A. |last153 = Spiridakis
|first154 = E. |last154 = Splanska
|first155 = S. |last155 = Sposetti
|first156 = D. |last156 = Starkey
|first157 = R. |last157 = Stephens
|first158 = A. |last158 = Stiepen
|first159 = R. |last159 = Stoss
|first160 = J. |last160 = Strajnic
|first161 = J.-P. |last161 = Teng
|first162 = G. |last162 = Tumolo
|first163 = A. |last163 = Vagnozzi
|first164 = B. |last164 = Vanoutryve
|first165 = J. M. |last165 = Vugnon
|first166 = B. D. |last166 = Warner
|first167 = M. |last167 = Waucomont
|first168 = O. |last168 = Wertz
|first169 = M. |last169 = Winiarski
|first170 = M. |last170 = Wolf
|date = February 2016
|title = New and updated convex shape models of asteroids based on optical data from a large collaboration network
|journal = Astronomy and Astrophysics
|volume = 586
|page = 24
|bibcode = 2016A&A...586A.108H
|doi = 10.1051/0004-6361/201527441
|arxiv = 1510.07422
}}
|first1 = Petr |last1 = Pravec
|first2 = Alan W. |last2 = Harris
|first3 = Peter |last3 = Kusnirák
|first4 = Adrián |last4 = Galád
|first5 = Kamil |last5 = Hornoch
|date = September 2012
|title = Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations
|journal = Icarus
|volume = 221
|issue = 1
|pages = 365–387
|bibcode = 2012Icar..221..365P
|doi = 10.1016/j.icarus.2012.07.026
}}
|display-authors = 6
|first1 = Peter |last1 = Veres
|first2 = Robert |last2 = Jedicke
|first3 = Alan |last3 = Fitzsimmons
|first4 = Larry |last4 = Denneau
|first5 = Mikael |last5 = Granvik
|first6 = Bryce |last6 = Bolin
|first7 = Serge |last7 = Chastel
|first8 = Richard J. |last8 = Wainscoat
|first9 = William S. |last9 = Burgett
|first10 = Kenneth C. |last10 = Chambers
|first11 = Heather |last11 = Flewelling
|first12 = Nick |last12 = Kaiser
|first13 = Eugen A. |last13 = Magnier
|first14 = Jeff S. |last14 = Morgan
|first15 = Paul A. |last15 = Price
|first16 = John L. |last16 = Tonry
|first17 = Christopher |last17 = Waters
|date = November 2015
|title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results
|journal = Icarus
|volume = 261
|pages = 34–47
|bibcode = 2015Icar..261...34V
|doi = 10.1016/j.icarus.2015.08.007
|arxiv = 1506.00762
}}
}}
External links
- [https://newton.spacedys.com/astdys/index.php?pc=1.1.0&n=391 AstDys entry on 391 Ingeborg]
- [http://www.antelopehillsobservatory.org/lightcurves/391.gif Lightcurve plot of (391) Ingeborg], Antelope Hills Observatory
- [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})
- [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
- [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Geneva Observatory, Raoul Behrend
- [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
- {{AstDys|391}}
- {{JPL small body}}
{{Minor planets navigator |390 Alma |number=391 |392 Wilhelmina}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Ingeborg}}