688 Melanie

Melanie is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the central asteroid belt at a distance of 2.3–3.1 AU once every 4 years and 5 months (1,618 days; semi-major axis of 2.7 AU). Its orbit has an eccentricity of 0.14 and an inclination of 10° with respect to the ecliptic. The body's observation arc begins at Vienna Observatory in July 1913, or four years after its official discovery observation.

This minor planet was named in 1910, by Otto Prelinger who collaborated with Johann Palisa and Max Wolf on the photographic star charts (AN 186, 15). Any reference of this minor planet{{'s}} name to a person or occurrence is unknown.

Among the many thousands of named minor planets, Melanie is one of 120 asteroids for which {{MoMP|688|no naming citation}} has been published. All of these asteroids with an unknown meaning have low numbers, beginning with {{mp|{{MoMP|164|164 Eva}}}} and ending with {{mp|{{MoMP|1514|1514 Ricouxa}}}}, all discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth.

In both the Bus-DeMeo classification and the Bus–Binzel SMASS classification, Melanie is a common, carbonaceous C-type asteroid.

In September 2011, a rotational lightcurve of Melanie was obtained from photometric observations by Robert Stephens at the Santana Observatory {{Obscode|646}} in California. Lightcurve analysis gave a well-defined rotation period of {{val|18.87|0.01}} hours with a low brightness variation of {{val|0.14|0.01}} magnitude ({{small|U=3}}). The first but unsuccessful attempt to measure the objects period was undertaken by Richard Binzel in June 1984. Other observations by French amateur astronomers Laurent Bernasconi (2005) and René Roy (2011) gave a period of ({{val|20|0.4}}) and ({{val|19.97}}) hours and an amplitude of {{val|0.07|0.01}} and {{val|0.08}} magnitude, respectively ({{small|U=2−/2−}}). Also in 2011, an ambiguous period of ({{val|16.10|0.05}}) with an alternative period solution of 16.10 hours and an amplitude of ({{val|0.09|0.01}}) magnitude was determined ({{small|U=2}}).

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), and the Japanese Akari satellite, Melanie measures ({{val|41.40|3.1}}), ({{val|41.614|0.228}}) and ({{val|49.12|0.60}}) kilometers in diameter and its surface has an albedo of ({{val|0.0599|0.010}}), ({{val|0.068|0.005}}) and ({{val|0.045|0.001}}), respectively.

The Collaborative Asteroid Lightcurve Link adopts the albedo obtained by IRAS and derives a diameter of 41.38 kilometers using an absolute magnitude of 10.59. Alternative mean-diameters published by the WISE team include ({{val|19.17|2.54|u=km}}), ({{val|38.832|0.280|u=km}}), ({{val|40.088|11.29|u=km}}), ({{val|41.54|13.73|u=km}}) and ({{val|43.864|0.198|u=km}}) with a corresponding albedo of ({{val|0.22|0.05}}), ({{val|0.068|0.005}}), ({{val|0.0538|0.0347}}), ({{val|0.05|0.03}}) and ({{val|0.0533|0.0107}}). On 4 August 2002, an asteroid occultation gave a best-fit ellipse dimension of ({{val|41.0|x|41.0|u=km}}) with a low quality rating of 0. These timed observations are taken when the asteroid passes in front of a distant star.

{{reflist|30em|refs=

{{cite web

|type = 2020-06-04 last obs.

|title = JPL Small-Body Database Browser: 688 Melanie (A909 QC)

|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000688

|publisher = Jet Propulsion Laboratory

|access-date = 20 July 2020}}

{{cite book

|title = Dictionary of Minor Planet Names

|last = Schmadel | first = Lutz D.

|publisher = Springer Berlin Heidelberg

|chapter = (688) Melanie

|page = 67

|date = 2007

|doi = 10.1007/978-3-540-29925-7_689

|isbn = 978-3-540-00238-3}}

{{cite book

|title = Dictionary of Minor Planet Names – Fifth Revised and Enlarged revision

|chapter = Appendix 11 – Minor Planet Names with Unknown Meaning

|last = Schmadel | first = Lutz D.

|publisher = Springer Berlin Heidelberg

|pages = 927–929

|date = 2007

|isbn = 978-3-540-00238-3

|author-link= Lutz D. Schmadel}}

{{cite web

|title = 688 Melanie (A909 QC)

|work = Minor Planet Center

|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=688

|access-date = 20 July 2020}}

{{cite web

|title = Asteroids and comets rotation curves – (688) Melanie

|last = Behrend |first = Raoul

|publisher = Geneva Observatory

|url = http://obswww.unige.ch/~behrend/page2cou.html#000688

|access-date = 20 July 2020}}

{{cite web

|title = LCDB Data for (688) Melanie

|publisher = Asteroid Lightcurve Database (LCDB)

|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=688

|access-date = 20 July 2020}}

{{cite journal

|display-authors = 6

|first1 = Joseph R. |last1 = Masiero

|first2 = T. |last2 = Grav

|first3 = A. K. |last3 = Mainzer

|first4 = C. R. |last4 = Nugent

|first5 = J. M. |last5 = Bauer

|first6 = R. |last6 = Stevenson

|first7 = S. |last7 = Sonnett

|date = August 2014

|title = Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos

|journal = The Astrophysical Journal

|volume = 791

|issue = 2

|page = 11

|bibcode = 2014ApJ...791..121M

|doi = 10.1088/0004-637X/791/2/121

|arxiv = 1406.6645}}

{{cite journal

|display-authors = 6

|first1 = Fumihiko |last1 = Usui

|first2 = Daisuke |last2 = Kuroda

|first3 = Thomas G. |last3 = Müller

|first4 = Sunao |last4 = Hasegawa

|first5 = Masateru |last5 = Ishiguro

|first6 = Takafumi |last6 = Ootsubo

|first7 = Daisuke |last7 = Ishihara

|first8 = Hirokazu |last8 = Kataza

|first9 = Satoshi |last9 = Takita

|first10 = Shinki |last10 = Oyabu

|first11 = Munetaka |last11 = Ueno

|first12 = Hideo |last12 = Matsuhara

|first13 = Takashi |last13 = Onaka

|date = October 2011

|title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey

|journal = Publications of the Astronomical Society of Japan

|volume = 63

|issue = 5

|pages = 1117–1138

|bibcode = 2011PASJ...63.1117U

|doi = 10.1093/pasj/63.5.1117

|doi-access= free

}} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-source=J/PASJ/63/1117/acua_v1&Num=688 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])

{{cite journal

|first1 = E. F. |last1 = Tedesco

|first2 = P. V. |last2 = Noah

|first3 = M. |last3 = Noah

|first4 = S. D. |last4 = Price

|date = October 2004

|title = IRAS Minor Planet Survey V6.0

|url = https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab

|journal = NASA Planetary Data System

|volume = 12

|pages = IRAS-A-FPA-3-RDR-IMPS-V6.0

|bibcode = 2004PDSS...12.....T

|access-date = 20 July 2020}}

{{cite journal

|last1 = Stephens

|first1 = Robert D.

|date = January 2012

|title = Asteroids Observed from GMARS and Santana Observatories: 2011 July - September

|journal = Minor Planet Bulletin

|url = http://www.minorplanet.info/MPB/issues/MPB_39-1.pdf

|volume = 39

|issue = 1

|pages = 11–12

|bibcode = 2012MPBu...39...11S

|issn = 1052-8091

|access-date = 20 July 2020

|archive-date = 22 February 2020

|archive-url = https://web.archive.org/web/20200222204456/http://www.minorplanet.info/MPB/issues/MPB_39-1.pdf

|url-status = dead

}}

{{cite journal

|last1 = Violante |first1 = R.

|last2 = Leake |first2 = M. A.

|date = December 2012

|title = Photometry and Lightcurve Analysis of 7 Main-Belt Asteroids

|journal = Journal of the Southeastern Association for Research in Astronomy

|volume = 7

|pages = 41–44

|bibcode = 2012JSARA...7...41V}}

{{cite journal

|last1 = Binzel |first1 = R. P.

|date = October 1987

|title = A photoelectric survey of 130 asteroids

|journal = Icarus

|volume = 72

|issue = 1

|pages = 135–208

|bibcode = 1987Icar...72..135B

|issn = 0019-1035

|doi = 10.1016/0019-1035(87)90125-4}}

{{cite web

|title = Asteroid 688 Melanie – Nesvorny HCM Asteroid Families V3.0

|work = Small Bodies Data Ferret

|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=688+Melanie

|access-date = 20 July 2020}}

{{cite web

|title = Asteroid 688 Melanie – Proper Elements

|publisher = AstDyS-2, Asteroids – Dynamic Site

|url = https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=688

|access-date= 20 July 2020}}

{{cite journal

|last1 = Zappalà |first1 = V.

|last2 = Bendjoya |first2 = Ph.

|last3 = Cellino |first3 = A.

|last4 = Farinella |first4 = P.

|last5 = Froeschle |first5 = C.

|date = 1997

|title = Asteroid Dynamical Families

|url = https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_5_DDR_FAMILY_V4_1/data/family.tab

|journal = NASA Planetary Data System

|pages = EAR-A-5-DDR-FAMILY-V4.1

|access-date = 20 July 2020}} ([https://sbn.psi.edu/pds/resource/family.html PDS main page])

}}

• [http://www.minorplanet.info/PHP/OneAsteroidInfo.php Lightcurve Database Query] (LCDB), at www.minorplanet.info
• [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
• [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Geneva Observatory, Raoul Behrend
• [http://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
• {{AstDys|688}}
• {{JPL small body}}

{{Minor planets navigator |687 Tinette |number=688 |689 Zita}}

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000688

Category:Discoveries by Johann Palisa

Category:Named minor planets

000688

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