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{{Short description|Main-belt asteroid}}
{{Infobox planet
{{Use dmy dates|date=October 2019}}
| width = 25em
{{Infobox planet
| bgcolour = #FFFFC0
| apsis =
| minorplanet = yes
| name = Riceia
| name = 1230 Riceia
| background = #D6D6D6
| symbol =
| image = 001230-asteroid shape model (1230) Riceia.png
| image =
| image_scale =
| caption =
| caption = Shape model of ''Riceia'' from its [[lightcurve]]
| discovery = yes
| discovery_ref =
| discovery_ref = <ref name="jpldata" />
| discoverer = [[Karl Wilhelm Reinmuth|K. Reinmuth]]
| discoverer = [[Karl Reinmuth|K. Reinmuth]]
| discovery_site = [[Landessternwarte Heidelberg-Königstuhl|Heidelberg]]
| discovery_site = [[Heidelberg-Königstuhl State Observatory|Heidelberg Obs.]]
| discovered = October 9, 1931
| discovered = 9 October 1931
| mpc_name = (1230) Riceia
| designations = yes
| alt_names = {{mp|1931 TX|1}}{{·}}1964 TS<br />1964 UE{{·}}1975 HH
| mp_name = 1230
| pronounced = {{IPAc-en|'|r|ai|s|i|@}}
| alt_names = 1931 TX1
| named_after = Hugh Rice<ref name="springer" /><br />{{small|(U.S. amateur astronomer)}}
| mp_category =
| mp_category = [[main-belt]]{{·}}{{small|([[Kirkwood gap|inner]])}}<ref name="lcdb" /><br />[[Background asteroid|background]]<ref name="AstDys-object" />
| orbit_ref =
| orbit_ref = <ref name="jpldata" />
| epoch = May 14, 2008
| epoch = 4 September 2017 ([[Julian day|JD]] 2458000.5)
| aphelion = 3.0322248
| uncertainty = 0
| perihelion = 2.1109194
| observation_arc = 86.13 yr (31,459 days)
| semimajor =
| aphelion = 3.0335 [[Astronomical unit|AU]]
| eccentricity = 0.1791327
| perihelion = 2.1104 AU
| period = 1506.2479794
| semimajor = 2.5719 AU
| avg_speed =
| inclination = 10.49465
| eccentricity = 0.1795
| period = 4.12 [[Julian year (astronomy)|yr]] (1,507 days)
| asc_node = 200.72754
| mean_anomaly = 197.36877
| mean_anomaly = 288.81[[Degree (angle)|°]]
| mean_motion = {{Deg2DMS|0.2390|sup=ms}} / day
| arg_peri = 184.77072
| inclination = 10.515°
| satellites =
| asc_node = 200.55°
| physical_characteristics = yes
| arg_peri = 185.25°
| dimensions =
| dimensions = {{val|6.194|0.344}} km<ref name="Masiero-2012" /><br />7.46 km {{small|(calculated)}}<ref name="lcdb" />
| mass =
| rotation = {{val|6.67317|0.00001}} [[Hour|h]]<ref name="Durech-2016" />
| density =
| albedo = 0.20 {{small|(assumed)}}<ref name="lcdb" /><br />{{val|0.318|0.037}}<ref name="Masiero-2012" />
| surface_grav =
| spectral_type = [[S-type asteroid|S]]<ref name="lcdb" /><ref name="Veres-2015" />
| escape_velocity =
| abs_magnitude = 12.90<ref name="Masiero-2012" />{{·}}13.0<ref name="jpldata" /><ref name="lcdb" />{{·}}{{val|13.11|0.22}}<ref name="Veres-2015" />
| sidereal_day =
| axial_tilt =
| pole_ecliptic_lat =
| pole_ecliptic_lon =
| albedo =
| temperatures=
| temp_name1 =
| mean_temp_1 =
| max_temp_1 =
| temp_name2 =
| max_temp_2 =
| spectral_type =
| abs_magnitude = 12.9<ref name=NASA/>
}}
}}
'''1230 Riceia''' (1931 TX1) is a [[Asteroid belt|main-belt]] [[asteroid]] discovered on October 9, 1931, by [[Karl Wilhelm Reinmuth|K. Reinmuth]] at [[Landessternwarte Heidelberg-Königstuhl|Heidelberg]].<ref name=NASA>{{cite web | title=JPL Small-Body Database Browser | url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1230+Riceia| accessdate= July 22, 2014 }}</ref>


'''1230 Riceia''', provisional designation {{mp|1931 TX|1}}, is a stony background [[asteroid]] from the central regions of the [[asteroid belt]], approximately 6 kilometers in diameter. It was discovered on 9 October 1931, by German astronomer [[Karl Reinmuth]] at the [[Heidelberg-Königstuhl State Observatory]].<ref name="MPC-object" /> The asteroid was named after [[Hugh Rice (astronomer)|Hugh Rice]], amateur astronomer of New York and director of the Museum of Natural Sciences.<ref name="springer" />
It was later named after Hugh Rice, amateur astronomer of New York and director of the Museum of Natural Sciences.<ref name=Schmadel>{{cite book |last= Schmadel |first= Lutz D. |title= Dictionary of Minor Planet Names |url=http://books.google.se/books?id=aeAg1X7afOoC&pg=PA100&dq=1230+Riceia&hl=sv&sa=X&ei=_tzNUqzXHoX_ygOV5YCgBQ&ved=0CEAQ6AEwAg#v=onepage&q=1230%20Riceia&f=false |page=100 |publisher= Springer |date= 2003 |isbn= 3-540-00238-3 }}</ref>


== External links ==
== Orbit and classification ==

*[http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1230+Riceia JPL Small-Body Database Browser on 1230 Riceia]
''Riceia'' is a non-[[Asteroid family|family]] asteroid from the main belt's [[Background asteroid|background population]].<ref name="AstDys-object" /> It orbits the Sun in the [[Kirkwood gap|central]] asteroid belt at a distance of 2.1–3.0&nbsp;[[Astronomical unit|AU]] once every 4 years and 1 month (1,507 days; [[semi-major axis]] of 2.57&nbsp;AU). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.18 and an [[orbital inclination|inclination]] of 11[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" />

The body's [[observation arc]] begins at Heidelberg on 17 October 1931, or eight days after its official discovery observation.<ref name="MPC-object" />

== Physical characteristics ==

''Riceia'' has been characterized as a stony [[S-type asteroid]] by [[Pan-STARRS]] photometric survey.<ref name="Veres-2015" />

=== Rotation period and pole ===

In 2016, a rotational [[lightcurve]] of ''Riceia'' was modeled from photometric data from the Lowell Photometric Database. Lightcurve analysis gave a sidereal [[rotation period]] of 6.67317 hours as well as a [[Poles of astronomical bodies|spin axis]] of (37.0°, −63.0°) in [[Ecliptic coordinate system|ecliptic coordinates]] (λ, β).<ref name="Durech-2016" />

=== Diameter and albedo ===

According to the survey carried out by the [[NEOWISE]] mission of NASA's [[Wide-field Infrared Survey Explorer]], ''Riceia'' measures 6.19 kilometers in diameter and its surface has a high [[astronomical albedo|albedo]] of 0.318.<ref name="Masiero-2012" /> The ''Collaborative Asteroid Lightcurve Link'' assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 7.46 kilometers based on an [[absolute magnitude]] of 13.0.<ref name="lcdb" />

== Naming ==

This [[minor planet]] was named after American amateur astronomer Hugh Rice, director of the Museum of Natural Sciences (possibly [[American Museum of Natural History|AMNH]]).<ref name="springer" /> The naming was proposed by Irving Meyer and endorsed by German astronomer [[Gustav Stracke]] who mentioned on a postcard in February 1937, that his American college, Meyer, who himself did not discover any asteroids, requested the naming after the city of Rutherford, where a private observatory was located at the time.<ref name="springer-Rutherfordia" />

The official naming citation was mentioned in ''[[The Names of the Minor Planets]]'' by [[Paul Herget]] in 1955 ({{small|[[Herget's discovery circumstances|H 113]]}}).<ref name="springer" />


== References ==
== References ==
{{reflist|30em|refs=
{{Reflist}}


<ref name="jpldata">{{cite web
{{Minor planets navigator|1229 Tilia|1231 Auricula}}
|type = 2017-11-25 last obs.
|title = JPL Small-Body Database Browser: 1230 Riceia (1931 TX1)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001230
|archive-url = https://web.archive.org/web/20200918004233/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001230
|url-status = dead
|archive-date = 18 September 2020
|publisher = [[Jet Propulsion Laboratory]]
|accessdate = 10 January 2018}}</ref>

<ref name="springer">{{cite book
|title = Dictionary of Minor Planet Names – (1230) Riceia
|last = Schmadel | first = Lutz D.
|publisher = [[Springer Berlin Heidelberg]]
|page = 102
|date = 2007
|isbn = 978-3-540-00238-3
|doi = 10.1007/978-3-540-29925-7_1231 |chapter = (1230) Riceia }}</ref>

<ref name="springer-Rutherfordia">{{cite book
|title = Dictionary of Minor Planet Names – (1249) Rutherfordia
|last = Schmadel
|first = Lutz D.
|publisher = Springer Berlin Heidelberg
|page = 104
|date = 2007
|isbn = 978-3-540-00238-3
|df =
|doi = 10.1007/978-3-540-29925-7_1250
|chapter = (1249) Rutherfordia}}</ref>

<ref name="MPC-object">{{cite web
|title = 1230 Riceia (1931 TX1)
|work = [[Minor Planet Center]]
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1230
|accessdate = 10 January 2018}}</ref>

<ref name="AstDys-object">{{cite web
|title = Asteroid 1230 Riceia – Proper Elements
|publisher = AstDyS-2, Asteroids – Dynamic Site
|url = https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1230
|access-date= 29 October 2019}}</ref>

<ref name="lcdb">{{cite web
|title = LCDB Data for (1230) Riceia
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1230%7CRiceia
|accessdate = 10 January 2018}}</ref>

<ref name="Masiero-2012">{{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= 10 January 2018}}</ref>

<ref name="Durech-2016">{{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= 10 January 2018}}</ref>

<ref name="Veres-2015">{{cite journal
|display-authors = 6
|first1 = Peter |last1 = Veres
|first2 = Robert |last2 = Jedicke
|first3 = Alan |last3 = Fitzsimmons
|first4 = Larry |last4 = Denneau
|first5 = Mikael |last5 = Granvik
|first6 = Bryce |last6 = Bolin
|first7 = Serge |last7 = Chastel
|first8 = Richard J. |last8 = Wainscoat
|first9 = William S. |last9 = Burgett
|first10 = Kenneth C. |last10 = Chambers
|first11 = Heather |last11 = Flewelling
|first12 = Nick |last12 = Kaiser
|first13 = Eugen A. |last13 = Magnier
|first14 = Jeff S. |last14 = Morgan
|first15 = Paul A. |last15 = Price
|first16 = John L. |last16 = Tonry
|first17 = Christopher |last17 = Waters
|date = November 2015
|title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V
|journal = Icarus
|volume = 261
|pages = 34–47
|bibcode = 2015Icar..261...34V
|doi = 10.1016/j.icarus.2015.08.007
|arxiv = 1506.00762
|access-date= 10 January 2018}}</ref>

}} <!-- end of reflist -->

== External links ==
* [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})
* [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] – Observatoire de Genève, Raoul Behrend
* [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
* {{AstDys|1230}}
* {{JPL small body}}

{{Minor planets navigator |1229 Tilia |number=1230 |1231 Auricula}}
{{Small Solar System bodies}}
{{Small Solar System bodies}}
{{Authority control}}


{{DEFAULTSORT:Riceia}}
{{DEFAULTSORT:Riceia}}
[[Category:Main-belt asteroids]]
[[Category:Background asteroids|001230]]
[[Category:Discoveries by Karl Wilhelm Reinmuth]]
[[Category:Discoveries by Karl Wilhelm Reinmuth]]
[[Category:Asteroids named for people]]
[[Category:Named minor planets]]
[[Category:Astronomical objects discovered in 1931]]
[[Category:Astronomical objects discovered in 1931|19311009]]


{{beltasteroid-stub}}

Latest revision as of 14:24, 17 August 2024

1230 Riceia
Shape model of Riceia from its lightcurve
Discovery[1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date9 October 1931
Designations
(1230) Riceia
Pronunciation/ˈraɪsiə/
Named after
Hugh Rice[2]
(U.S. amateur astronomer)
1931 TX1 · 1964 TS
1964 UE · 1975 HH
main-belt · (inner)[3]
background[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc86.13 yr (31,459 days)
Aphelion3.0335 AU
Perihelion2.1104 AU
2.5719 AU
Eccentricity0.1795
4.12 yr (1,507 days)
288.81°
0° 14m 20.4s / day
Inclination10.515°
200.55°
185.25°
Physical characteristics
Dimensions6.194±0.344 km[5]
7.46 km (calculated)[3]
6.67317±0.00001 h[6]
0.20 (assumed)[3]
0.318±0.037[5]
S[3][7]
12.90[5] · 13.0[1][3] · 13.11±0.22[7]

1230 Riceia, provisional designation 1931 TX1, is a stony background asteroid from the central regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 9 October 1931, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory.[8] The asteroid was named after Hugh Rice, amateur astronomer of New York and director of the Museum of Natural Sciences.[2]

Orbit and classification

[edit]

Riceia is a non-family asteroid from the main belt's background population.[4] It orbits the Sun in the central asteroid belt at a distance of 2.1–3.0 AU once every 4 years and 1 month (1,507 days; semi-major axis of 2.57 AU). Its orbit has an eccentricity of 0.18 and an inclination of 11° with respect to the ecliptic.[1]

The body's observation arc begins at Heidelberg on 17 October 1931, or eight days after its official discovery observation.[8]

Physical characteristics

[edit]

Riceia has been characterized as a stony S-type asteroid by Pan-STARRS photometric survey.[7]

Rotation period and pole

[edit]

In 2016, a rotational lightcurve of Riceia was modeled from photometric data from the Lowell Photometric Database. Lightcurve analysis gave a sidereal rotation period of 6.67317 hours as well as a spin axis of (37.0°, −63.0°) in ecliptic coordinates (λ, β).[6]

Diameter and albedo

[edit]

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Riceia measures 6.19 kilometers in diameter and its surface has a high albedo of 0.318.[5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 7.46 kilometers based on an absolute magnitude of 13.0.[3]

Naming

[edit]

This minor planet was named after American amateur astronomer Hugh Rice, director of the Museum of Natural Sciences (possibly AMNH).[2] The naming was proposed by Irving Meyer and endorsed by German astronomer Gustav Stracke who mentioned on a postcard in February 1937, that his American college, Meyer, who himself did not discover any asteroids, requested the naming after the city of Rutherford, where a private observatory was located at the time.[9]

The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 113).[2]

References

[edit]
  1. ^ a b c d "JPL Small-Body Database Browser: 1230 Riceia (1931 TX1)" (2017-11-25 last obs.). Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 10 January 2018.
  2. ^ a b c d Schmadel, Lutz D. (2007). "(1230) Riceia". Dictionary of Minor Planet Names – (1230) Riceia. Springer Berlin Heidelberg. p. 102. doi:10.1007/978-3-540-29925-7_1231. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f "LCDB Data for (1230) Riceia". Asteroid Lightcurve Database (LCDB). Retrieved 10 January 2018.
  4. ^ a b "Asteroid 1230 Riceia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.
  5. ^ a b c d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 10 January 2018.
  6. ^ a b Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: 6. arXiv:1601.02909. Bibcode:2016A&A...587A..48D. doi:10.1051/0004-6361/201527573. Retrieved 10 January 2018.
  7. ^ a b c Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 10 January 2018.
  8. ^ a b "1230 Riceia (1931 TX1)". Minor Planet Center. Retrieved 10 January 2018.
  9. ^ Schmadel, Lutz D. (2007). "(1249) Rutherfordia". Dictionary of Minor Planet Names – (1249) Rutherfordia. Springer Berlin Heidelberg. p. 104. doi:10.1007/978-3-540-29925-7_1250. ISBN 978-3-540-00238-3.
[edit]
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