“11573 Helmholtz”的意思、由来-开放百科全书

Orbit and classification

Helmholtz

[5]

[6]

It orbits the Sun in the outer main-belt at a distance of 2.4–4.1 AU once every 5 years and 11 months (2,148 days; semi-major axis of 3.26 AU). Its orbit has an eccentricity of 0.26 and an inclination of 2° with respect to the ecliptic. The asteroid was first observed as {{mp|1982 YN|4}} at Crimea–Nauchnij in December 1982. The body's observation arc begins at Palomar Observatory in January 1989.^[2]

Physical characteristics

Diameter and albedo

Based on a generic magnitude-to-diameter conversion, Helmholtz measures 13 kilometer in diameter for an absolute magnitude of 13.2 and an assumed albedo of 0.057, which is typical for carbonaceous asteroids. If the body was of stony rather than carbonaceous composition, its estimated diameter would be less than 7 kilometer.^[8]

Rotation period

As of 2018, no rotational lightcurve of Helmholtz has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.^[17]

Naming

This minor planet was named after German physiologist and physicist Hermann von Helmholtz (1821–1894), a prolific naturalists of the 19th century. The official naming citation was published by the Minor Planet Center on 20 March 2000 ({{small|M.P.C. 39658}}).^[18] The lunar crater Helmholtz as well as the crater Helmholtz on Mars are also named in his honor.^[1]^[2]

References

1. ^{{GPN|2438|name=Lunar crater Helmholtz}}
2. ^{{GPN|2439|name=Martian crater Helmholtz}}
3. ^¹²³⁴{{cite web |title = 11573 Helmholtz (1993 SK3) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=11573 |accessdate = 2 February 2018}}
4. ^¹{{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 2 February 2018}}
5. ^¹²{{Cite journal |first1 = F. |last1 = Roig |first2 = D. |last2 = Nesvorný |first3 = S. |last3 = Ferraz-Mello |date = September 2002 |title = Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution [ Erratum: 2002MNRAS.336.1391R ] |url = https://academic.oup.com/mnras/article/335/2/417/1046170 |journal = Monthly Notices of the Royal Astronomical Society |volume = 335 |issue = 2 |pages = 417–431 |bibcode = 2002MNRAS.335..417R |doi = 10.1046/j.1365-8711.2002.05635.x |accessdate = 2 February 2018}}
6. ^¹²{{cite web |title = Small Bodies Data Ferret |work = Nesvorny HCM Asteroid Families V3.0 |url = https://sbntools.psi.edu/ferret/PropertySearch/familyForm.action |accessdate = 2 February 2018}}
7. ^¹²{{cite web |title = Asteroid Size Estimator |publisher = CNEOS NASA/JPL |url = https://cneos.jpl.nasa.gov/tools/ast_size_est.html |accessdate = 2 February 2018}}
8. ^¹{{cite web |title = LCDB Data for (11573) Helmholtz |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=11573%7CHelmholtz |accessdate = 2 February 2018}}

External links

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 (10001)-(15000) – Minor Planet Center

词条	11573 Helmholtz
释义	Orbit and classification Physical characteristics Diameter and albedo Rotation period Naming References External links {{Infobox planet \| minorplanet = yes \| name = 11573 Helmholtz \| background = #D6D6D6 \| image = \| image_size = \| caption = \| discovery_ref = \| discoverer = F. Börngen L. D. Schmadel \| discovery_site = {{nowrap\|Karl Schwarzschild Obs.}} \| discovered = 20 September 1993 \| mpc_name = (11573) Helmholtz \| alt_names = {{mp\|1993 SK\|3}}{{·}}{{mp\|1982 YN\|4}} \| pronounced = \| named_after = Hermann von Helmholtz ^[2] {{small\|(German naturalist)}} \| mp_category = main-belt ^[2]{{·}}{{small\|(outer)}} {{nowrap\|background ^[5]{{·}}Zhongguo ^[6]}} \| orbit_ref = \| epoch = 23 March 2018 (JD 2458200.5) \| uncertainty = 0 \| observation_arc = 34.92 yr (12,755 d) \| aphelion = 4.1213 AU \| perihelion = 2.3952 AU \| semimajor = 3.2582 AU \| eccentricity = 0.2649 \| period = 5.88 yr (2,148 d) \| mean_anomaly = 21.116° \| mean_motion = {{Deg2DMS\|0.1676\|sup=ms}} / day \| inclination = 2.2499° \| asc_node = 310.61° \| arg_peri = 127.67° \| mean_diameter = 13 km {{small\|(est. at 0.057)}}^[8] \| rotation = \| albedo = \| spectral_type = \| abs_magnitude = 13.2 }}11573 Helmholtz, provisional designation {{mp\|1993 SK\|3}}, is a Zhongguo asteroid from the outermost region of the asteroid belt, approximately {{convert\|13\|km\|mi\|abbr=off\|sigfig=1\|sp=us}} in diameter. It was discovered on 20 September 1993, by German astronomers Freimut Börngen and Lutz Schmadel at the Karl Schwarzschild Observatory in Tautenburg, Germany. It is one of few asteroids located in the 2 : 1 resonance with Jupiter. The asteroid was named for German physicist Hermann von Helmholtz.^[2] Orbit and classification Helmholtz is a non-family asteroid from the main belt's background population.^[5] It is a member of the small group of Zhongguo asteroids, located in the Hecuba gap (2 : 1 mean motion resonance with Jupiter) near 3.27 AU. Contrary to the nearby unstable Griqua group, the orbits of the Zhongguos are stable over half a billion years.^[6] It orbits the Sun in the outer main-belt at a distance of 2.4–4.1 AU once every 5 years and 11 months (2,148 days; semi-major axis of 3.26 AU). Its orbit has an eccentricity of 0.26 and an inclination of 2° with respect to the ecliptic. The asteroid was first observed as {{mp\|1982 YN\|4}} at Crimea–Nauchnij in December 1982. The body's observation arc begins at Palomar Observatory in January 1989.^[2] Physical characteristics Diameter and albedo Based on a generic magnitude-to-diameter conversion, Helmholtz measures 13 kilometer in diameter for an absolute magnitude of 13.2 and an assumed albedo of 0.057, which is typical for carbonaceous asteroids. If the body was of stony rather than carbonaceous composition, its estimated diameter would be less than 7 kilometer.^[8] Rotation period As of 2018, no rotational lightcurve of Helmholtz has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.^[17] Naming This minor planet was named after German physiologist and physicist Hermann von Helmholtz (1821–1894), a prolific naturalists of the 19th century. The official naming citation was published by the Minor Planet Center on 20 March 2000 ({{small\|M.P.C. 39658}}).^[18] The lunar crater Helmholtz as well as the crater Helmholtz on Mars are also named in his honor.^[1]^[2] References 1. ^{{GPN\|2438\|name=Lunar crater Helmholtz}} 2. ^{{GPN\|2439\|name=Martian crater Helmholtz}} 3. ^¹²³⁴{{cite web \|title = 11573 Helmholtz (1993 SK3) \|work = Minor Planet Center \|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=11573 \|accessdate = 2 February 2018}} 4. ^¹{{cite web \|title = MPC/MPO/MPS Archive \|work = Minor Planet Center \|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html \|accessdate = 2 February 2018}} 5. ^¹²{{Cite journal \|first1 = F. \|last1 = Roig \|first2 = D. \|last2 = Nesvorný \|first3 = S. \|last3 = Ferraz-Mello \|date = September 2002 \|title = Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution [ Erratum: 2002MNRAS.336.1391R ] \|url = https://academic.oup.com/mnras/article/335/2/417/1046170 \|journal = Monthly Notices of the Royal Astronomical Society \|volume = 335 \|issue = 2 \|pages = 417–431 \|bibcode = 2002MNRAS.335..417R \|doi = 10.1046/j.1365-8711.2002.05635.x \|accessdate = 2 February 2018}} 6. ^¹²{{cite web \|title = Small Bodies Data Ferret \|work = Nesvorny HCM Asteroid Families V3.0 \|url = https://sbntools.psi.edu/ferret/PropertySearch/familyForm.action \|accessdate = 2 February 2018}} 7. ^¹²{{cite web \|title = Asteroid Size Estimator \|publisher = CNEOS NASA/JPL \|url = https://cneos.jpl.nasa.gov/tools/ast_size_est.html \|accessdate = 2 February 2018}} 8. ^¹{{cite web \|title = LCDB Data for (11573) Helmholtz \|publisher = Asteroid Lightcurve Database (LCDB) \|url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=11573%7CHelmholtz \|accessdate = 2 February 2018}} ^[3]^[4]^[5]^[6]^[7]^[8] }} External links 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 (10001)-(15000) – Minor Planet Center {{AstDys\|11573}} {{JPL small body}} {{Use dmy dates\|date=April 2018}}{{Minor planets navigator \|11572 Schindler \|number=11573 \|11574 d'Alviella}}{{Small Solar System bodies}}{{DEFAULTSORT:Helmholtz}} 7 : Zhongguo asteroids\|Background asteroids\|Discoveries by Freimut Börngen\|Discoveries by Lutz D. Schmadel\|Minor planets named for people\|Named minor planets\|Astronomical objects discovered in 1993
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