Astronomy:1230 Riceia

From HandWiki
1230 Riceia
001230-asteroid shape model (1230) Riceia.png
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 afterHugh Rice[2]
(U.S. amateur astronomer)
1931 TX1 · 1964 TS
1964 UE · 1975 HH
Minor planet categorymain-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)
|{{{apsis}}}|helion}}3.0335 AU
|{{{apsis}}}|helion}}2.1104 AU
2.5719 AU
Eccentricity0.1795
Orbital period4.12 yr (1,507 days)
Mean anomaly288.81°
Mean motion0° 14m 20.4s / day
Inclination10.515°
Longitude of ascending node200.55°
185.25°
Physical characteristics
Dimensions6.194±0.344 km[5]
7.46 km (calculated)[3]
Rotation period6.67317±0.00001 h[6]
Geometric albedo0.20 (assumed)[3]
0.318±0.037[5]
S[3][7]
Absolute magnitude (H)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

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

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

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 spin axis of (37.0°, −63.0°) in ecliptic coordinates (λ, β).[6]

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 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

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

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1230 Riceia (1931 TX1)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001230. Retrieved 10 January 2018. 
  2. ↑ 2.0 2.1 2.2 2.3 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. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (1230) Riceia". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1230%7CRiceia. Retrieved 10 January 2018. 
  4. ↑ 4.0 4.1 "Asteroid 1230 Riceia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1230. 
  5. ↑ 5.0 5.1 5.2 5.3 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. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 10 January 2018. 
  6. ↑ 6.0 6.1 Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics 587: 6. doi:10.1051/0004-6361/201527573. Bibcode: 2016A&A...587A..48D. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D. Retrieved 10 January 2018. 
  7. ↑ 7.0 7.1 7.2 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 10 January 2018. 
  8. ↑ 8.0 8.1 "1230 Riceia (1931 TX1)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1230. 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. 

External links



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:1230_Riceia&oldid=3340805"