1150 Achaia

{{Infobox planet

| minorplanet = yes

| name = 1150 Achaia

| background = #D6D6D6

| image = File:001150-asteroid shape model (1150) Achaia.png

| image_scale =

| caption = Shape model of Achaia from its lightcurve

| discovery_ref =

| discovered = 2 September 1929

| discoverer = K. Reinmuth

| discovery_site = Heidelberg Obs.

| mpc_name = (1150) Achaia

| alt_names = 1929 RB{{·}}{{mp|1955 SZ|1}}

| pronounced = {{IPAc-en|ə|ˈ|k|aɪ|ə}},{{OED|Achaia}} {{IPAc-en|ə|ˈ|k|eɪ|ə}}{{MW|Achaia}}

| named_after = Achaea {{small|(Greek region)}}

| mp_category = {{plainlist|

main-belt{{·}}{{small|(inner)}}
background}}

| orbit_ref =

| epoch = 16 February 2017 (JD 2457800.5)

| uncertainty = 0

| observation_arc = 86.78 yr (31,696 days)

| aphelion = 2.6392 AU

| perihelion = 1.7424 AU

| semimajor = 2.1908 AU

| eccentricity = 0.2047

| period = 3.24 yr (1,184 days)

| mean_anomaly = 348.01°

| mean_motion = {{Deg2DMS|0.3039|sup=ms}} / day

| inclination = 2.3929°

| asc_node = 206.54°

| arg_peri = 139.58°

| moid = 0.7366 AU

| mean_diameter = {{val|7.689|0.020}} km
7.82 km {{small|(calculated)}}
{{val|7.928|0.036}} km
{{val|7.96|0.25}} km
{{val|8.16|0.25}} km

| rotation = {{val|60.99|0.05|ul=h}}{{efn|name=LCDB-Pravec-2007}}

| pole_ecliptic_lat= {{plainlist|

(5.0°, −65.0°) (λ₁/β₁)
{{nowrap|(20.0°, −69.0°) (λ₂/β₂)}}}}

| albedo = {{val|0.2343|0.0479}}
{{val|0.239|0.017}}
0.24 {{small|(assumed)}}
{{val|0.242|0.029}}
{{val|0.251|0.017}}

| spectral_type = {{plainlist|

S {{small|(S3OS2-TH)}}
S l {{small|(S3OS2-BB)}}}}

| abs_magnitude = 12.60{{·}}12.7

}}

1150 Achaia ({{IPAc-en|ə|ˈ|k|aɪ|ə}}); prov. designation: {{mp|1929 RB}}) is a stony background asteroid from the inner regions of the asteroid belt. It was discovered by Karl Reinmuth at Heidelberg Observatory on 2 September 1929. The S-type asteroid has a notably long rotation period of hours 61 hours and measures approximately {{convert|7.8|km|mi|abbr=off|sp=us}} in diameter. It is named for the Greek region of Achaia.

Discovery

Achaia was discovered on 2 September 1929, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany. Ten nights later, it was independently discovered by Friedrich Schwassmann and Arno Wachmann at Bergedorf. The body's observation arc begins at Heidelberg, five days after its first and official discovery observation.<

Orbit and classification

Located in the orbital region of the Flora family, one of the largest, yet disputed families of the main-belt, Achaia 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 at a distance of 1.7–2.6 AU once every 3 years and 3 months (1,184 days). Its orbit has an eccentricity of 0.20 and an inclination of 2° with respect to the ecliptic.

Naming

This minor planet is named for the region Achaea (or "Achaia") in Western Greece. It is located in the northern part of the Peloponnese peninsula and borders on the gulfs of Patras and Corinth. Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 ({{small|H 107}}).

Physical characteristics

In the Tholen-like taxonomy of the Small Solar System Objects Spectroscopic Survey (S3OS2), Achaia is a common, stony S-type asteroid, while in the survey's SMASS (Bus–Binzel)-like taxonomic variant, it is an Sl-subtype, which transitions from the S-type to the uncommon L-type asteroid.

= Photometry =

A rotational lightcurve of Achaia was obtained from photometric observations by Czech astronomer Petr Pravec at Ondřejov Observatory in October 2007.{{efn|name=Lightcurve-Plot}} It gave a well-defined rotation period of 60.99 hours with a brightness variation of 0.72 magnitude ({{small|U=3}}).{{efn|name=LCDB-Pravec-2007}}

Published in 2016, two additional lightcurves were derived from modeled photometric data using various sources. They gave a sidereal rotation period of {{val|61.071|0.001}} and {{val|61.072|0.005}} hours, as well as a spin axis of (5.0°, −65.0°) and (20.0°, −69.0°) in ecliptic coordinates, respectively.

While not being a slow rotator, Achaia has a notably longer period than the vast majority of asteroids, which typically rotate every 2 to 20 hours once around their axis. Also, the body's changes in brightness are relatively high and indicate that it has a non-spheroidal shape.

= Diameter and albedo =

According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Achaia measures between 7.689 and 8.16 kilometers in diameter, and its surface has an albedo between 0.234 and 0.251. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – taken from 8 Flora, the Flora family's principal body and namesake – and calculates a diameter of 7.82 kilometers based on an absolute magnitude of 12.7.

Notes

{{notelist|refs=

{{efn|name=LCDB-Pravec-2007|1=Pravec (2007) web: rotation period {{val|60.99|0.05}} hours with a brightness amplitude of {{val|0.72}} mag. Quality code of 3. Summary figures at {{URL|1=http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1150 |2=Collaborative Asteroid Lightcurve Link (CALL) for (1150) Achaia}} and {{URL|1=http://www.asu.cas.cz/~ppravec/neo.htm|2=Pravec, P.; Wolf, M.; Sarounova, L. (2007)}} }}

{{efn|name=Lightcurve-Plot|1=(1150) Achaia: {{URL|1=http://www.asu.cas.cz/~asteroid/01150.png|2=Lightcurve Plot}} analysis on 23 October 2007 by Pravec and Galad. ProjectID: Modra, Kharkiv. Comment: Error of 0.02 h is formal, real error perhaps a couple times greater.}}

}}

References

{{reflist|30em|refs=

{{cite web

|type = 2016-06-13 last obs.

|title = JPL Small-Body Database Browser: 1150 Achaia (1929 RB)

|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001150

|publisher = Jet Propulsion Laboratory

|accessdate = 2 February 2017}}

{{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 = (1150) Achaia

|page = [https://archive.org/details/dictionaryminorp00schm/page/n110 97]

|date = 2007

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

|doi = 10.1007/978-3-540-29925-7_1151}}

{{cite web

|title = 1150 Achaia (1929 RB)

|work = Minor Planet Center

|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1150

|accessdate = 2 February 2017}}

{{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

|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M

|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

|access-date= 2 February 2017}}

{{cite web

|title = LCDB Data for (1150) Achaia

|publisher = Asteroid Lightcurve Database (LCDB)

|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1150%7CAchaia

|accessdate = 2 February 2017}}

{{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=1150 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])

{{cite journal

|display-authors = 6

|first1 = A. |last1 = Mainzer

|first2 = T. |last2 = Grav

|first3 = J. |last3 = Masiero

|first4 = E. |last4 = Hand

|first5 = J. |last5 = Bauer

|first6 = D. |last6 = Tholen

|first7 = R. S. |last7 = McMillan

|first8 = T. |last8 = Spahr

|first9 = R. M. |last9 = Cutri

|first10 = E. |last10 = Wright

|first11 = J. |last11 = Watkins

|first12 = W. |last12 = Mo

|first13 = C. |last13 = Maleszewski

|date = November 2011

|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results

|journal = The Astrophysical Journal

|volume = 741

|issue = 2

|page = 25

|bibcode = 2011ApJ...741...90M

|doi = 10.1088/0004-637X/741/2/90

|arxiv = 1109.6407}}

{{cite journal

|display-authors = 6

|first1 = Joseph R. |last1 = Masiero

|first2 = A. K. |last2 = Mainzer

|first3 = T. |last3 = Grav

|first4 = J. M. |last4 = Bauer

|first5 = R. M. |last5 = Cutri

|first6 = C. |last6 = Nugent

|first7 = M. S. |last7 = Cabrera

|date = November 2012

|title = Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids

|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M

|journal = The Astrophysical Journal Letters

|volume = 759

|issue = 1

|page = 5

|bibcode = 2012ApJ...759L...8M

|doi = 10.1088/2041-8205/759/1/L8

|arxiv = 1209.5794

|access-date= 2 February 2017}}

{{cite journal

|display-authors = 6

|last1 = Hanuš |first1 = J.

|last2 = Ďurech |first2 = J.

|last3 = Oszkiewicz |first3 = D. A.

|last4 = Behrend |first4 = R.

|last5 = Carry |first5 = B.

|last6 = Delbo |first6 = M.

|last7 = Adam |first7 = O.

|last8 = Afonina |first8 = V.

|last9 = Anquetin |first9 = R.

|last10 = Antonini |first10 = P.

|last11 = Arnold |first11 = L.

|last12 = Audejean |first12 = M.

|last13 = Aurard |first13 = P.

|last14 = Bachschmidt |first14 = M.

|last15 = Baduel |first15 = B.

|last16 = Barbotin |first16 = E.

|last17 = Barroy |first17 = P.

|last18 = Baudouin |first18 = P.

|last19 = Berard |first19 = L.

|last20 = Berger |first20 = N.

|last21 = Bernasconi |first21 = L.

|last22 = Bosch |first22 = J. -G.

|last23 = Bouley |first23 = S.

|last24 = Bozhinova |first24 = I.

|last25 = Brinsfield |first25 = J.

|last26 = Brunetto |first26 = L.

|last27 = Canaud |first27 = G.

|last28 = Caron |first28 = J.

|last29 = Carrier |first29 = F.

|last30 = Casalnuovo |first30 = G.

|last31 = Casulli |first31 = S.

|last32 = Cerda |first32 = M.

|last33 = Chalamet |first33 = L.

|last34 = Charbonnel |first34 = S.

|last35 = Chinaglia |first35 = B.

|last36 = Cikota |first36 = A.

|last37 = Colas |first37 = F.

|last38 = Coliac |first38 = J. -F.

|last39 = Collet |first39 = A.

|last40 = Coloma |first40 = J.

|last41 = Conjat |first41 = M.

|last42 = Conseil |first42 = E.

|last43 = Costa |first43 = R.

|last44 = Crippa |first44 = R.

|last45 = Cristofanelli |first45 = M.

|last46 = Damerdji |first46 = Y.

|last47 = Debackère |first47 = A.

|last48 = Decock |first48 = A.

|last49 = Déhais |first49 = Q.

|last50 = Déléage |first50 = T.

|last51 = Delmelle |first51 = S.

|last52 = Demeautis |first52 = C.

|last53 = Dróżdż |first53 = M.

|last54 = Dubos |first54 = G.

|last55 = Dulcamara |first55 = T.

|last56 = Dumont |first56 = M.

|last57 = Durkee |first57 = R.

|last58 = Dymock |first58 = R.

|last59 = Escalante del Valle |first59 = A.

|last60 = Esseiva |first60 = N.

|last61 = Esseiva |first61 = R.

|last62 = Esteban |first62 = M.

|last63 = Fauchez |first63 = T.

|last64 = Fauerbach |first64 = M.

|last65 = Fauvaud |first65 = M.

|last66 = Fauvaud |first66 = S.

|last67 = Forné |first67 = E.

|last68 = Fournel |first68 = C.

|last69 = Fradet |first69 = D.

|last70 = Garlitz |first70 = J.

|last71 = Gerteis |first71 = O.

|last72 = Gillier |first72 = C.

|last73 = Gillon |first73 = M.

|last74 = Giraud |first74 = R.

|last75 = Godard |first75 = J. -P.

|last76 = Goncalves |first76 = R.

|last77 = Hamanowa |first77 = Hiroko

|last78 = Hamanowa |first78 = Hiromi

|last79 = Hay |first79 = K.

|last80 = Hellmich |first80 = S.

|last81 = Heterier |first81 = S.

|last82 = Higgins |first82 = D.

|last83 = Hirsch |first83 = R.

|last84 = Hodosan |first84 = G.

|last85 = Hren |first85 = M.

|last86 = Hygate |first86 = A.

|last87 = Innocent |first87 = N.

|last88 = Jacquinot |first88 = H.

|last89 = Jawahar |first89 = S.

|last90 = Jehin |first90 = E.

|last91 = Jerosimic |first91 = L.

|last92 = Klotz |first92 = A.

|last93 = Koff |first93 = W.

|last94 = Korlevic |first94 = P.

|last95 = Kosturkiewicz |first95 = E.

|last96 = Krafft |first96 = P.

|last97 = Krugly |first97 = Y.

|last98 = Kugel |first98 = F.

|last99 = Labrevoir |first99 = O.

|last100 = Lecacheux |first100 = J.

|last101 = Lehký |first101 = M.

|last102 = Leroy |first102 = A.

|last103 = Lesquerbault |first103 = B.

|last104 = Lopez-Gonzales |first104 = M. J.

|last105 = Lutz |first105 = M.

|last106 = Mallecot |first106 = B.

|last107 = Manfroid |first107 = J.

|last108 = Manzini |first108 = F.

|last109 = Marciniak |first109 = A.

|last110 = Martin |first110 = A.

|last111 = Modave |first111 = B.

|last112 = Montaigut |first112 = R.

|last113 = Montier |first113 = J.

|last114 = Morelle |first114 = E.

|last115 = Morton |first115 = B.

|last116 = Mottola |first116 = S.

|last117 = Naves |first117 = R.

|last118 = Nomen |first118 = J.

|last119 = Oey |first119 = J.

|last120 = Ogłoza |first120 = W.

|last121 = Paiella |first121 = M.

|last122 = Pallares |first122 = H.

|last123 = Peyrot |first123 = A.

|last124 = Pilcher |first124 = F.

|last125 = Pirenne |first125 = J. -F.

|last126 = Piron |first126 = P.

|last127 = Polińska |first127 = M.

|last128 = Polotto |first128 = M.

|last129 = Poncy |first129 = R.

|last130 = Previt |first130 = J. P.

|last131 = Reignier |first131 = F.

|last132 = Renauld |first132 = D.

|last133 = Ricci |first133 = D.

|last134 = Richard |first134 = F.

|last135 = Rinner |first135 = C.

|last136 = Risoldi |first136 = V.

|last137 = Robilliard |first137 = D.

|last138 = Romeuf |first138 = D.

|last139 = Rousseau |first139 = G.

|last140 = Roy |first140 = R.

|last141 = Ruthroff |first141 = J.

|last142 = Salom |first142 = P. A.

|last143 = Salvador |first143 = L.

|last144 = Sanchez |first144 = S.

|last145 = Santana-Ros |first145 = T.

|last146 = Scholz |first146 = A.

|last147 = Séné |first147 = G.

|last148 = Skiff |first148 = B.

|last149 = Sobkowiak |first149 = K.

|last150 = Sogorb |first150 = P.

|last151 = Soldán |first151 = F.

|last152 = Spiridakis |first152 = A.

|last153 = Splanska |first153 = E.

|last154 = Sposetti |first154 = S.

|last155 = Starkey |first155 = D.

|last156 = Stephens |first156 = R.

|last157 = Stiepen |first157 = A.

|last158 = Stoss |first158 = R.

|last159 = Strajnic |first159 = J.

|last160 = Teng |first160 = J. -P.

|last161 = Tumolo |first161 = G.

|last162 = Vagnozzi |first162 = A.

|last163 = Vanoutryve |first163 = B.

|last164 = Vugnon |first164 = J. M.

|last165 = Warner |first165 = B. D.

|last166 = Waucomont |first166 = M.

|last167 = Wertz |first167 = O.

|last168 = Winiarski |first168 = M.

|last169 = Wolf |first169 = M.

|date = February 2016

|title = New and updated convex shape models of asteroids based on optical data from a large collaboration network

|journal = Astronomy and Astrophysics

|volume = 586

|page = A108

|bibcode = 2016A&A...586A.108H

|issn = 0004-6361

|doi = 10.1051/0004-6361/201527441

|arxiv = 1510.07422}}

{{cite journal

|first1 = J. |last1 = Durech

|first2 = J. |last2 = Hanus

|first3 = D. |last3 = Oszkiewicz

|first4 = R. |last4 = Vanco

|date = March 2016

|title = Asteroid models from the Lowell photometric database

|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D

|journal = Astronomy and Astrophysics

|volume = 587

|page = 6

|bibcode = 2016A&A...587A..48D

|doi = 10.1051/0004-6361/201527573

|arxiv = 1601.02909

|access-date= 2 February 2017}}

{{cite web

|title = Asteroid 1150 Achaia

|work = Small Bodies Data Ferret

|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1150+Achaia

|accessdate = 14 March 2020}}

{{cite web

|title = Asteroid 1150 Achaia – Proper Elements

|publisher = AstDyS-2, Asteroids – Dynamic Site

|url = https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1150

|access-date= 14 March 2020}}

{{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= 14 March 2020}}

}}

External links

[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
[https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
{{AstDys|1150}}
{{JPL small body}}

{{Minor planets navigator |1149 Volga |number=1150 |1151 Ithaka}}

001150

Category:Discoveries by Karl Wilhelm Reinmuth

Category:Named minor planets

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