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497 Iva

{{Short description|Main-belt asteroid}}

{{Use dmy dates|date=October 2019}}

{{Infobox planet

| minorplanet = yes

| name = 497 Iva

| background = #D6D6D6

| image = 000497-asteroid shape model (497) Iva.png

| image_scale =

| caption = Modelled shape of Iva from its lightcurve

| mpc_name = (497) Iva

| pronounced = {{IPAc-en|'|aɪ|v|ə}}Noah Webster (1884) A Practical Dictionary of the English Language

| alt_names = 1902 KJ

| discoverer = Raymond Smith Dugan

| discovered = 4 November 1902

| discovery_site = Heidelberg

| epoch = 31 July 2016 (JD 2457600.5)

| eccentricity = 0.29981

| semimajor = {{Convert|2.8516|AU|Gm|abbr=on}}

| perihelion = {{Convert|1.9966|AU|Gm|abbr=on}}

| aphelion = {{Convert|3.7065|AU|Gm|abbr=on|lk=on}}

| period = {{convert|1758.8|days|years|2|order=flip|abbr=on}} 4.82 yr (1758.8 d)

| inclination = 4.8205°

| asc_node = 6.3305°

| arg_peri = 3.5819°

| mean_anomaly = 242.202°

| mean_motion = {{Deg2DMS|0.20468|sup=ms}} / day

| orbit_ref =

| observation_arc = {{convert|41438|days|years|2|order=flip|abbr=on}} 113.45 yr (41438 d)

| uncertainty = 0

| abs_magnitude = 10.02

| rotation = {{Convert|4.620|h|d|abbr=on|lk=on}}

}}

497 Iva is a main-belt asteroid orbiting the Sun, not to be confused with 1627 Ivar. It was discovered by American astronomer R. S. Dugan on 4 November 1902, and was named for Iva Shores, the young daughter of the family where he was staying in Heidelberg. This object is orbiting at a distance of {{val|2.85|ul=AU}} with a period of {{convert|1758.8|days|years|2|disp=out|abbr=on}} and an eccentricity of 0.3. The orbital plane is inclined at an angle of 4.8° to the plane of the ecliptic.

This asteroid is classified as an M-type asteroid and is considered anhydrous but oxidized. Further analysis of the spectra suggests the "presence of either an olivine or high-Ca pyroxene phase

in addition to orthopyroxene ± Type B clinopyroxene". Analysis of light curves based on photometric data show a rotation period of {{val|4.621|0.001|u=hours}} with a brightness variation of {{val|0.34|0.02}} in magnitude.

References

{{Reflist|refs=

{{Cite web

| url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=497

| title=497 Iva (1902 KJ)

| work=JPL Small-Body Database

| publisher=NASA/Jet Propulsion Laboratory

| access-date=6 May 2016 }}

{{citation

| title=Spectral properties of nine M-type asteroids

| display-authors=1 | last1=Birlan | first1=M.

| last2=Vernazza | first2=P. | last3=Nedelcu | first3=D. A.

| journal=Astronomy and Astrophysics | postscript=.

| volume=475 | issue=2 | date=November 2007 | pages=747–754

| doi=10.1051/0004-6361:20077914 | bibcode=2007A&A...475..747B | url=https://hal.sorbonne-universite.fr/hal-00616481/file/Spectral_properties_of_nine_M-type_asteroids.pdf }}

{{citation

| title=On the spectral similarity of carbonaceous chondrites and some hydrated and oxidized asteroids

| last1=Busarev | first1=V. V. | last2=Taran | first2=M. N.

| work=Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany

| editor1-first=Barbara | editor1-last=Warmbein

| publication-place=Noordwijk, Netherlands

| publisher=ESA Publications Division

| isbn=92-9092-810-7 | date=November 2002 | pages=933–936

| bibcode=2002ESASP.500..933B | postscript=. }}

{{citation

| title=The M-/X-asteroid menagerie: Results of an NIR spectral survey of 45 main-belt asteroids

| last1=Hardersen | first1=Paul S. | last2=Cloutis | first2=Edward A.

| last3=Reddy | first3=Vishnu | last4=Mothé-Diniz | first4=Thais

| last5=Emery | first5=Joshua P. | display-authors=1

| journal=Meteoritics & Planetary Science

| volume=46 | issue=12 | pages=1910–1938 | date=December 2011

| doi=10.1111/j.1945-5100.2011.01304.x | bibcode=2011M&PS...46.1910H | doi-access=free }}

{{citation

| title=Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2008 December - 2009 March

| last=Warner | first=Brian D.

| journal=Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers

| volume=36 | issue=3 | pages=109–116 | date=July 2009

| bibcode=2009MPBu...36..109W | postscript=. }}

{{citation

| title=Dictionary of Minor Planet Names

| first=Lutz D. | last=Schmadel | year=2013

| isbn=9783662066157 | page=83

| publisher=Springer Berlin Heidelberg

| url=https://books.google.com/books?id=eHv1CAAAQBAJ&pg=PA83 }}

}}

External links

  • [http://www.minorplanetobserver.com/pdolc/A497_2009.HTM Lightcurve plot of 497 Iva], Palmer Divide Observatory, B. D. Warner (2009)
  • [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 Dictionary of Minor Planet Names], Google books
  • [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Observatoire de Genève, Raoul Behrend
  • [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
  • {{AstDys|497}}
  • {{JPL small body}}

{{Minor planets navigator |496 Gryphia |number=497 |498 Tokio}}

{{Small Solar System bodies}}

{{Authority control}}

{{DEFAULTSORT:000497}}

Category:Background asteroids

Iva

Iva

Category:M-type asteroids (Tholen)

19021104

{{Beltasteroid-stub}}