929 Algunde

When applying the synthetic hierarchical clustering method (HCM) by Nesvorný, or the 1995 HCM-analysis by Zappalà, Algunde is a member of the Flora family ({{small|402}}), a giant asteroid family and the largest family of stony asteroids in the main-belt.{{rp|23}} However, according to another HCM-analysis by Milani and Knežević (AstDys), it is a background asteroid as this analysis does not recognize the Flora asteroid clan. Algunde orbits the Sun in the inner asteroid belt at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,224 days; semi-major axis of 2.24 AU). Its orbit has an eccentricity of 0.11 and an inclination of 4° with respect to the ecliptic. The body's observation arc begins at Heidelberg Observatory on 12 March 1920, two nights after its official discovery observation.

This minor planet was named "Algunde", after a female name picked from the Lahrer Hinkender Bote, published in Lahr, southern Germany. A Hinkender Bote (lit. "limping messenger") was a very popular almanac, especially in the alemannic-speaking region from the late 17th throughout the early 20th century. The calendar section contains feast days, the dates of important fairs and astronomical ephemerides. For 30 January, the calendar gives "Algunde" as the German name day analogue next to Adelgunde and Martina, the protestant and catholic entries in the calendar of saints, likely referring to Saint Aldegonde and Martina of Rome.

As with 22 other asteroids – starting with 913 Otila, and ending with 1144 Oda – Reinmuth selected names from this calendar due to his many asteroid discoveries that he had trouble thinking of proper names. These names are not related to the discoverer's contemporaries. Lutz Schmadel, the author of the Dictionary of Minor Planet Names learned about Reinmuth's source of inspiration from private communications with Dutch astronomer Ingrid van Houten-Groeneveld, who worked as a young astronomer at Heidelberg.

In the Tholen classification, Algunde is a common stony S-type asteroid. It is also an S-type in the Bus–DeMeo taxonomy and in the Tholen-like taxonomy of the Small Solar System Objects Spectroscopic Survey (S3OS2). Only in the SMASS-like taxonomy of the S3OS2, Algunde is an Sl-subtype asteroid that transitions between the S-type and the uncommon L-type.

In March 2007, a rotational lightcurve of Algunde was obtained from photometric observations by Slovak astronomers Adrián Galád and Leonard Kornoš at Modra Observatory {{Obscode|118}}. Lightcurve analysis gave a well-defined rotation period of {{val|3.31016|0.00009}} hours with a low brightness amplitude of {{val|0.14|0.01}} magnitude, indicative of a spherical rather than elongated shape ({{small|U=3}}). Between 2008 and 2018, numerous follow-up observations by other astronomers confirmed the period of 3.31 hours with brightness variation maxima between 0.11 and 0.17.

According to the survey carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Algunde measures ({{val|10.70|0.36}}) and ({{val|11.443|0.190}}) kilometers in diameter and its surface has an albedo of ({{val|0.242|0.018}}) and ({{val|0.272|0.072}}), respectively. The Collaborative Asteroid Lightcurve Link takes Petr Pravec's revised WISE data with an albedo of 0.2055 and a diameter of 12.45 kilometers based on an absolute magnitude of 11.86. Another publication by the WISE team gives a mean-diameter of ({{val|12.440|0.073}}) kilometers and an albedo of ({{val|0.2348|0.0327}}).

{{reflist|30em|refs=

{{cite web

|type = 2020-01-05 last obs.

|title = JPL Small-Body Database Browser: 929 Algunde (A920 ED)

|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000929

|publisher = Jet Propulsion Laboratory

|access-date = 18 February 2020}}

{{cite book

|title = Dictionary of Minor Planet Names

|url = https://archive.org/details/dictionaryminorp00schm

|url-access = limited

|last = Schmadel | first = Lutz D.

|publisher = Springer Berlin Heidelberg

|chapter = (929) Algunde

|page = [https://archive.org/details/dictionaryminorp00schm/page/n95 82]

|date = 2007

|doi = 10.1007/978-3-540-29925-7_930

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

{{cite web

|title = Lahrer hinkender Bote – Kalender 1925

|date = 1925

|page = 1

|website = Badischen Landesbibliothek

|url = https://digital.blb-karlsruhe.de/blbihd/periodical/pageview/3467471

|access-date = 18 February 2020}} [https://digital.blb-karlsruhe.de/topic/view/3617734 Lahrer Bote archive]

{{cite web

|title = Lahrer hinkender Bote – Kalender 1925

|date = 1925

|page = 6

|website = Badischen Landesbibliothek

|url = https://digital.blb-karlsruhe.de/blbihd/periodical/pageview/3467474

|access-date = 18 February 2020}}

{{cite web

|title = 929 Algunde (A920 ED)

|work = Minor Planet Center

|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=929

|access-date = 18 February 2020}}

{{cite web

|title = Asteroids and comets rotation curves – (929) Algunde

|last = Behrend |first = Raoul

|publisher = Geneva Observatory

|url = http://obswww.unige.ch/~behrend/page3cou.html#000929

|access-date = 18 February 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=

}} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-source=J/PASJ/63/1117/acua_v1&Num=929 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])

{{cite web

|title = LCDB Data for (929) Algunde

|publisher = Asteroid Lightcurve Database (LCDB)

|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=929

|access-date = 18 February 2020}}

{{Cite journal

|first1 = Adrian

|last1 = Galad

|first2 = Leonard

|last2 = Kornos

|date = June 2008

|title = A Sample of Lightcurves from Modra

|url = http://www.minorplanet.info/MPB/issues/MPB_35-2.pdf

|journal = The Minor Planet Bulletin

|volume = 35

|issue = 2

|pages = 78–81

|bibcode = 2008MPBu...35...78G

|access-date = 18 February 2020

|archive-date = 13 February 2020

|archive-url = https://web.archive.org/web/20200213124842/http://www.minorplanet.info/MPB/issues/MPB_35-2.pdf

|url-status = dead

}}

{{cite web

|title = Asteroid 929 Algunde

|work = Small Bodies Data Ferret

|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=929+Algunde

|access-date = 18 February 2020}}

{{cite web

|title = Asteroid 929 Algunde – Proper Elements

|publisher = AstDyS-2, Asteroids – Dynamic Site

|url = https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=929

|access-date= 18 February 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 = 15 March 2020}}} ([https://sbn.psi.edu/pds/resource/family.html PDS main page])

{{Cite journal

|first1 = D. |last1 = Nesvorný

|first2 = M. |last2 = Broz

|first3 = V. |last3 = Carruba

|date = December 2014

|title = Identification and Dynamical Properties of Asteroid Families

|journal = Asteroids IV

|pages = 297–321

|bibcode = 2015aste.book..297N

|doi = 10.2458/azu_uapress_9780816532131-ch016

|arxiv = 1502.01628}}

{{Cite journal

|first1 = D. |last1 = Lazzaro

|first2 = C. A. |last2 = Angeli

|first3 = J. M. |last3 = Carvano

|first4 = T. |last4 = Mothé-Diniz

|first5 = R. |last5 = Duffard

|first6 = M. |last6 = Florczak

|date = November 2004

|title = S3OS2: the visible spectroscopic survey of 820 asteroids

|url = http://sirrah.troja.mff.cuni.cz/yarko-site/tmp/eos/NEW/spectral_type_figure/s3os2.pdf

|journal = Icarus

|volume = 172

|issue = 1

|pages = 179–220

|bibcode = 2004Icar..172..179L

|doi = 10.1016/j.icarus.2004.06.006

|access-date= 18 February 2020}}

}}

• [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|929}}
• {{JPL small body}}

{{Minor planets navigator |928 Hildrun |number=929 |930 Westphalia}}

{{Small Solar System bodies}}

{{Authority control}}

{{DEFAULTSORT:Algunde}}

000929

Category:Discoveries by Karl Wilhelm Reinmuth

Category:Named minor planets

000929

19200310