“92 Undina”的意思、由来-开放百科全书

Undina ({{IPAc-en|ʌ|n|ˈ|d|aɪ|n|ə}} {{Respell|un|DY|nə}}; Latin: Undīna) (minor planet designation: 92 Undina) is a large main belt asteroid. The asteroid was discovered by Christian Peters on July 7, 1867 from the Hamilton College Observatory.^[8] It is named for the eponymous heroine of Undine, a popular novella by Friedrich de la Motte Fouqué.

This minor planet is orbiting at a distance of around 3 AU from the Sun, which is known for a concentration of Tholen M-type asteroids. Indeed, 92 Undina has an unusually high albedo of 0.25 and an M-type spectrum, or Xc-type on the Bus taxonomy.^[9] However, it displays absorption features at a wavelength of 3 μm, which is usually indicative of hydrated silicates on the surface.^[10] There is a faint band in the region of 9 μm that is typically attributed to a form of orthopyroxene having low levels of calcium and iron. The spectrum of 92 Undina closely resembles powdered material from the Esquel meteorite, although with a higher albedo.^[9]

Observations performed at the Palmer Divide Observatory in Colorado Springs, Colorado in during 2007 produced a light curve with a period of 15.941 ± 0.002 hours with a brightness range of 0.20 ± 0.02 in magnitude. This matches a 15.94-hour period reported in 1979.^[12] Attempts in 2014 to model the spin axis and shape based on light curve information proved inconclusive, but did indicate that "the pole latitude is not far removed from the ecliptic plane and rotation is probably retrograde".^[13]

References

1. ^Asteroid Data Sets {{webarchive|url=https://www.webcitation.org/5mqof7ROl?url=http://www.psi.edu/pds/resource/albedo.html |date=2010-01-17 }}
2. ^¹²³{{Citation | first1 = B. | last1 = Carry | title = Density of asteroids | work = Planetary and Space Science | volume = 73 | pages = 98–118 |date=December 2012 | doi = 10.1016/j.pss.2012.03.009 | bibcode = 2012P&SS...73...98C | postscript= .|arxiv = 1203.4336 }} See Table 1.
3. ^¹{{citation | title=Minor Planets 93 and 94 discovered | last1=Watson | first1=J. | journal=Monthly Notices of the Royal Astronomical Society | volume=28 | page=15 | date=November 1867 | bibcode=1867MNRAS..28...15W | postscript=. }}
4. ^¹{{citation | title=Rotation Period, Spin Axis, and Shape Model for Main-belt Asteroid 92 Undina | last1=Warner | first1=Brian D. | journal=The Minor Planet Bulletin | volume=41 | issue=4 | pages=230−233 | date=October 2014 | bibcode=2014MPBu...41..230W | postscript=. }}
5. ^¹{{citation | contribution=Asteroid Spectroscopy and Mineralogy | last1=Burbine | first1=T. H. | last2=Binzel | first2=R. P. | title=Asteroids, comets, meteors 1993: proceedings of the 160th International Astronomical Union, held in Belgirate, Italy, June 14-18, 1993 | editor1-first=Andrea | editor1-last=Milani | editor2-first=Michel | editor2-last=Di Martino | editor3-first=A. | editor3-last=Cellino | publisher=International Astronomical Union. Symposium no. 160, Kluwer Academic Publishers, Dordrecht | page=255 | year=1994 | bibcode=1994IAUS..160..255B | postscript=. }}
6. ^¹²{{citation | postscript=. | title=Spectroscopic survey of X-type asteroids | display-authors=1 | last1=Fornasier | first1=S. | last2=Clark | first2=B. E. | last3=Dotto | first3=E. | journal=Icarus | volume=214 | issue=1 | pages=131−146 | date=July 2011 | doi=10.1016/j.icarus.2011.04.022 | bibcode=2011Icar..214..131F | arxiv=1105.3380}}
7. ^¹{{Citation | first1 = Brian D. | last1 = Warner | title = Asteroid Lightcurve Analysis at the Palmer Divide Observatory | work = The Minor Planet Bulletin |date=September 2007 | bibcode = 2007MPBu...34...72W | postscript= .}}

词条	92 Undina
释义	References External links {{About\|asteroid (92) Undina\|\|Undine (disambiguation){{!}}Undine}}{{Infobox planet \| minorplanet=yes \| image=92 Undina (orbit).gif \| image_size = 250 \| background=#D6D6D6 \| name=92 Undina \| discoverer=C. H. F. Peters \| discovery_site = Litchfield Obs. \| discovered=7 July 1867 \| mpc_name=(92) Undina \| alt_names= \| pronounced = {{IPAc-en\|ʌ\|n\|ˈ\|d\|aɪ\|n\|ə}} {{Respell\|un\|DY\|nə}} \| mp_category=Main belt \| observation_arc=145.11 yr (53001 d) \| orbit_ref= \| epoch=31 July 2016 (JD 2457600.5) \| uncertainty=0 \| semimajor={{Convert\|3.18800\|AU\|Gm\|abbr=on}} \| perihelion={{Convert\|2.85654\|AU\|Gm\|abbr=on}} \| aphelion={{Convert\|3.51946\|AU\|Gm\|abbr=on\|lk=on}} \| eccentricity=0.10397 \| period=5.69 yr (2079.1 d) \| inclination=9.92900° \| asc_node=101.588° \| arg_peri=239.494° \| mean_anomaly=6.12456° \| mean_motion={{Deg2DMS\|0.173152\|sup=ms}} / day \| mean_diameter={{val\|126.42\|3.4\|ul=km}} 124.44 ± 3.25 km^[3] \| mass={{nowrap\|(4.43 ± 0.25) × 10¹⁸ kg^[3]}} \| density=4.39 ± 0.42 g/cm³^[3] \| rotation={{Convert\|15.941\|h\|d\|abbr=on\|lk=on}} \| spectral_type=M \| abs_magnitude=6.61 \| albedo={{val\|0.2509\|0.014}} 0.251 ^[1] }} Undina ({{IPAc-en\|ʌ\|n\|ˈ\|d\|aɪ\|n\|ə}} {{Respell\|un\|DY\|nə}}; Latin: Undīna) (minor planet designation: 92 Undina) is a large main belt asteroid. The asteroid was discovered by Christian Peters on July 7, 1867 from the Hamilton College Observatory.^[8] It is named for the eponymous heroine of Undine, a popular novella by Friedrich de la Motte Fouqué. This minor planet is orbiting at a distance of around 3 AU from the Sun, which is known for a concentration of Tholen M-type asteroids. Indeed, 92 Undina has an unusually high albedo of 0.25 and an M-type spectrum, or Xc-type on the Bus taxonomy.^[9] However, it displays absorption features at a wavelength of 3 μm, which is usually indicative of hydrated silicates on the surface.^[10] There is a faint band in the region of 9 μm that is typically attributed to a form of orthopyroxene having low levels of calcium and iron. The spectrum of 92 Undina closely resembles powdered material from the Esquel meteorite, although with a higher albedo.^[9] Observations performed at the Palmer Divide Observatory in Colorado Springs, Colorado in during 2007 produced a light curve with a period of 15.941 ± 0.002 hours with a brightness range of 0.20 ± 0.02 in magnitude. This matches a 15.94-hour period reported in 1979.^[12] Attempts in 2014 to model the spin axis and shape based on light curve information proved inconclusive, but did indicate that "the pole latitude is not far removed from the ecliptic plane and rotation is probably retrograde".^[13] References 1. ^Asteroid Data Sets {{webarchive\|url=https://www.webcitation.org/5mqof7ROl?url=http://www.psi.edu/pds/resource/albedo.html \|date=2010-01-17 }} 2. ^¹²³{{Citation \| first1 = B. \| last1 = Carry \| title = Density of asteroids \| work = Planetary and Space Science \| volume = 73 \| pages = 98–118 \|date=December 2012 \| doi = 10.1016/j.pss.2012.03.009 \| bibcode = 2012P&SS...73...98C \| postscript= .\|arxiv = 1203.4336 }} See Table 1. 3. ^¹{{citation \| title=Minor Planets 93 and 94 discovered \| last1=Watson \| first1=J. \| journal=Monthly Notices of the Royal Astronomical Society \| volume=28 \| page=15 \| date=November 1867 \| bibcode=1867MNRAS..28...15W \| postscript=. }} 4. ^¹{{citation \| title=Rotation Period, Spin Axis, and Shape Model for Main-belt Asteroid 92 Undina \| last1=Warner \| first1=Brian D. \| journal=The Minor Planet Bulletin \| volume=41 \| issue=4 \| pages=230−233 \| date=October 2014 \| bibcode=2014MPBu...41..230W \| postscript=. }} 5. ^¹{{citation \| contribution=Asteroid Spectroscopy and Mineralogy \| last1=Burbine \| first1=T. H. \| last2=Binzel \| first2=R. P. \| title=Asteroids, comets, meteors 1993: proceedings of the 160th International Astronomical Union, held in Belgirate, Italy, June 14-18, 1993 \| editor1-first=Andrea \| editor1-last=Milani \| editor2-first=Michel \| editor2-last=Di Martino \| editor3-first=A. \| editor3-last=Cellino \| publisher=International Astronomical Union. Symposium no. 160, Kluwer Academic Publishers, Dordrecht \| page=255 \| year=1994 \| bibcode=1994IAUS..160..255B \| postscript=. }} 6. ^¹²{{citation \| postscript=. \| title=Spectroscopic survey of X-type asteroids \| display-authors=1 \| last1=Fornasier \| first1=S. \| last2=Clark \| first2=B. E. \| last3=Dotto \| first3=E. \| journal=Icarus \| volume=214 \| issue=1 \| pages=131−146 \| date=July 2011 \| doi=10.1016/j.icarus.2011.04.022 \| bibcode=2011Icar..214..131F \| arxiv=1105.3380}} 7. ^¹{{Citation \| first1 = Brian D. \| last1 = Warner \| title = Asteroid Lightcurve Analysis at the Palmer Divide Observatory \| work = The Minor Planet Bulletin \|date=September 2007 \| bibcode = 2007MPBu...34...72W \| postscript= .}} ^[2]^[3]^[4]^[5]^[6]^[7] }} External links Lightcurve plot of 92 Undina, Palmer Divide Observatory, B. D. Warner (2011) 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\|92}} {{JPL small body}} {{Use dmy dates\|date=July 2018}}{{Minor planets navigator \|91 Aegina \|number=92 \|93 Minerva}}{{Small Solar System bodies}}{{DEFAULTSORT:Undina}} 7 : Background asteroids\|Discoveries by Christian Peters\|Minor planets named from literature\|Named minor planets\|X-type asteroids (Tholen)\|Xc-type asteroids (SMASS)\|Astronomical objects discovered in 1867
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References

External links