“176 Iduna”的意思、由来-开放百科全书

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 Sällskapet Idun, a club in Stockholm that hosted an astronomical conference; Idun is also a Norse goddess.^[1]^[2] A G-type asteroid, it has a composition similar to that of the largest main-belt asteroid, 1 Ceres.

References

1. ^{{cite web|url=http://www.astro.uu.se/~classe/svenska_ast-K081215.html|title=Motiveringar till asteroidnamn med svensk anknytning.|publisher=Uppsala University|language=Swedish|access-date=24 October 2017}}
2. ^{{cite book|last1=Schmadel|first1=Lutz|title=Dictionary of Minor Planet Names|volume=2|date=1992|publisher=Springer Verlag|location=Berlin|isbn=3-540-00238-3|page=28|url=https://books.google.se/books?id=aeAg1X7afOoC&pg=PA28&dq=176+Iduna&hl=sv&sa=X&ei=_tzNUqzXHoX_ygOV5YCgBQ&ved=0CEAQ6AEwAg#v=onepage&q=176%20Iduna&f=false|accessdate=24 October 2017}}
3. ^¹²{{Citation | last1 = Hansen | first1 = A. T. | last2 = Arentoft | first2 = T. | title = The Rotational Period of 176 Iduna | work = The Minor Planet Bulletin | volume = 24 | page = 14 | bibcode = 1997MPBu...24Q..14H | postscript= .|date=June 1997}}
4. ^¹{{Citation | last1 = Warner | first1 = Brian D. | title = Asteroid Lightcurve Analysis at the Palmer Divide Observatory - June - October 2007 | work = The Minor Planet Bulletin | volume = 35 | issue = 2 | pages = 56–60 | bibcode = 2008MPBu...35...56W | postscript= .|date=June 2008}}

External links

Lightcurve plot of 176 Iduna, Palmer Divide Observatory, B. D. Warner (2007)

Asteroid Lightcurve Database (LCDB), query form (info)

[https://books.google.com/books?id=aeAg1X7afOoC&pg 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

词条	176 Iduna
释义	References External links {{Infobox planet \| minorplanet= yes \| mpc_name= (176) Iduna \| background= #D6D6D6 \| name= 176 Iduna \| discoverer= C. H. F. Peters \| discovered= 14 October 1877 \| mp_category= Main belt \| orbit_ref= \| semimajor= {{Convert\|3.1880\|AU\|Gm\|abbr=on}} \| perihelion= {{Convert\|2.6526\|AU\|Gm\|abbr=on}} \| aphelion= {{Convert\|3.7235\|AU\|Gm\|abbr=on\|lk=on}} \| period= 5.69 yr (2079.1 d) \| inclination= 22.660° \| eccentricity= 0.16796 \| dimensions= {{val\|121.04\|2.2\|ul=km}} \| rotation= {{Convert\|11.2877\|h\|d\|abbr=on\|lk=on}} 11.289 hours^[3] \| spectral_type= G \| abs_magnitude= 8.2 \| albedo= {{val\|0.0834\|0.003}} \| epoch= 31 July 2016 (JD 2457600.5) \| asc_node= 200.50° \| arg_peri= 188.17° \| mean_anomaly= 165.15° \| mean_motion= {{Deg2DMS\|0.17315\|sup=ms}} / day \| observation_arc= 138.50 yr (50587 d) \| uncertainty= 0 \| moid= {{Convert\|1.65682\|AU\|Gm\|abbr=on}} \| jupiter_moid= {{Convert\|1.73015\|AU\|Gm\|abbr=on}} \| tisserand= 3.056 }} 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 Sällskapet Idun, a club in Stockholm that hosted an astronomical conference; Idun is also a Norse goddess.^[1]^[2] A G-type asteroid, it has a composition similar to that of the largest main-belt asteroid, 1 Ceres. 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.^[3] 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.^[7] References 1. ^{{cite web\|url=http://www.astro.uu.se/~classe/svenska_ast-K081215.html\|title=Motiveringar till asteroidnamn med svensk anknytning.\|publisher=Uppsala University\|language=Swedish\|access-date=24 October 2017}} 2. ^{{cite book\|last1=Schmadel\|first1=Lutz\|title=Dictionary of Minor Planet Names\|volume=2\|date=1992\|publisher=Springer Verlag\|location=Berlin\|isbn=3-540-00238-3\|page=28\|url=https://books.google.se/books?id=aeAg1X7afOoC&pg=PA28&dq=176+Iduna&hl=sv&sa=X&ei=_tzNUqzXHoX_ygOV5YCgBQ&ved=0CEAQ6AEwAg#v=onepage&q=176%20Iduna&f=false\|accessdate=24 October 2017}} 3. ^¹²{{Citation \| last1 = Hansen \| first1 = A. T. \| last2 = Arentoft \| first2 = T. \| title = The Rotational Period of 176 Iduna \| work = The Minor Planet Bulletin \| volume = 24 \| page = 14 \| bibcode = 1997MPBu...24Q..14H \| postscript= .\|date=June 1997}} 4. ^¹{{Citation \| last1 = Warner \| first1 = Brian D. \| title = Asteroid Lightcurve Analysis at the Palmer Divide Observatory - June - October 2007 \| work = The Minor Planet Bulletin \| volume = 35 \| issue = 2 \| pages = 56–60 \| bibcode = 2008MPBu...35...56W \| postscript= .\|date=June 2008}} ^[3]^[4] }} External links Lightcurve plot of 176 Iduna, Palmer Divide Observatory, B. D. Warner (2007) Asteroid Lightcurve Database (LCDB), query form (info) [https://books.google.com/books?id=aeAg1X7afOoC&pg 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 {{AstDys\|176}} {{JPL small body}} {{Minor planets navigator \|175 Andromache \|number=176 \|177 Irma}}{{Small Solar System bodies}}{{DEFAULTSORT:000176}}{{S-beltasteroid-stub}} 7 : Background asteroids\|Discoveries by Christian Peters\|Named minor planets\|G-type asteroids (Tholen)\|Ch-type asteroids (SMASS)\|Astronomical objects discovered in 1877\|Objects observed by stellar occultation
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