An occultation of a star by Iduna was observed from Mexico on January 17, 1998.
Photometric observations of this asteroid at the Romer Observatory in Aarhus, Denmark during 1996 gave a light curve with a period of 11.289 ± 0.006 hours and a brightness variation of 0.35 in magnitude.[2] A 2008 study at the Palmer Divide Observatory in Colorado Springs, Colorado gave a period of 11.309 ± 0.005 hours, confirming the 1996 result.[5]
^ abHansen, A. T.; Arentoft, T. (June 1997), "The Rotational Period of 176 Iduna", The Minor Planet Bulletin, 24: 14, Bibcode:1997MPBu...24Q..14H.
^ (in Swedish). Uppsala University. Archived from the original on 8 July 2009. Retrieved 24 October 2017.
^Schmadel, Lutz (1992). Dictionary of Minor Planet Names. Vol. 2. Berlin: Springer Verlag. p. 28. ISBN3-540-00238-3. Retrieved 24 October 2017.
^Warner, Brian D. (June 2008), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - June - October 2007", The Minor Planet Bulletin, 35 (2): 56–60, Bibcode:2008MPBu...35...56W.
External linksedit
Lightcurve plot of 176 Iduna, Palmer Divide Observatory, B. D. Warner (2007)
Asteroid Lightcurve Database (LCDB), query form (info 16 December 2017 at the Wayback Machine)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
176 Iduna at AstDyS-2, Asteroids—Dynamic Site
Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
iduna, iduna, minor, planet, designation, large, main, belt, asteroid, that, discovered, german, american, astronomer, christian, heinrich, friedrich, peters, october, 1877, clinton, york, named, after, sällskapet, idun, club, stockholm, that, hosted, astronom. Iduna minor planet designation 176 Iduna is a large main belt asteroid that was discovered by German American astronomer Christian Heinrich Friedrich Peters on October 14 1877 in Clinton New York It is named after Sallskapet Idun a club in Stockholm that hosted an astronomical conference Idun Idunn Iduna is also a Norse goddess 3 4 A G type asteroid it has a composition similar to that of the largest main belt asteroid 1 Ceres 176 Iduna3D convex shape model of 176 IdunaDiscoveryDiscovered byC H F PetersDiscovery date14 October 1877DesignationsMPC designation 176 IdunaPronunciation iː ˈ d uː n e Named afterIdunnAlternative designationsA877 TB 1945 RQMinor planet categoryMain beltOrbital characteristics 1 Epoch 31 July 2016 JD 2457600 5 Uncertainty parameter 0Observation arc138 50 yr 50587 d Aphelion3 7235 AU 557 03 Gm Perihelion2 6526 AU 396 82 Gm Semi major axis3 1880 AU 476 92 Gm Eccentricity0 16796Orbital period sidereal 5 69 yr 2079 1 d Mean anomaly165 15 Mean motion0 10m 23 34s dayInclination22 660 Longitude of ascending node200 50 Argument of perihelion188 17 Earth MOID1 65682 AU 247 857 Gm Jupiter MOID1 73015 AU 258 827 Gm TJupiter3 056Physical characteristicsDimensions121 04 2 2 kmSynodic rotation period11 2877 h 0 47032 d 1 11 289 hours 2 Geometric albedo0 0834 0 003Spectral typeGAbsolute magnitude H 8 2 An occultation of a star by Iduna was observed from Mexico on January 17 1998 Photometric observations of this asteroid at the Romer Observatory in Aarhus Denmark during 1996 gave a light curve with a period of 11 289 0 006 hours and a brightness variation of 0 35 in magnitude 2 A 2008 study at the Palmer Divide Observatory in Colorado Springs Colorado gave a period of 11 309 0 005 hours confirming the 1996 result 5 References edit a b Yeomans Donald K 176 Iduna JPL Small Body Database Browser NASA Jet Propulsion Laboratory retrieved 12 May 2016 a b Hansen A T Arentoft T June 1997 The Rotational Period of 176 Iduna The Minor Planet Bulletin 24 14 Bibcode 1997MPBu 24Q 14H Motiveringar till asteroidnamn med svensk anknytning in Swedish Uppsala University Archived from the original on 8 July 2009 Retrieved 24 October 2017 Schmadel Lutz 1992 Dictionary of Minor Planet Names Vol 2 Berlin Springer Verlag p 28 ISBN 3 540 00238 3 Retrieved 24 October 2017 Warner Brian D June 2008 Asteroid Lightcurve Analysis at the Palmer Divide Observatory June October 2007 The Minor Planet Bulletin 35 2 56 60 Bibcode 2008MPBu 35 56W External links editLightcurve plot of 176 Iduna Palmer Divide Observatory B D Warner 2007 Asteroid Lightcurve Database LCDB query form info Archived 16 December 2017 at the Wayback Machine Dictionary of Minor Planet Names Google books Asteroids and comets rotation curves CdR Observatoire de Geneve Raoul Behrend Discovery Circumstances Numbered Minor Planets 1 5000 Minor Planet Center 176 Iduna at AstDyS 2 Asteroids Dynamic Site Ephemeris Observation prediction Orbital info Proper elements Observational info 176 Iduna at the JPL Small Body Database nbsp Close approach Discovery Ephemeris Orbit diagram Orbital elements Physical parameters nbsp This article about an S type asteroid native to the asteroid belt is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title 176 Iduna amp oldid 1191787531, wikipedia, wiki, book, books, library,
