Astronomy:1675 Simonida
| Discovery[1] | |
|---|---|
| Discovered by | M. B. Protić |
| Discovery site | Belgrade Obs. |
| Discovery date | 20 March 1938 |
| Designations | |
| (1675) Simonida | |
| Named after | Simonida (Queen)[2] |
| 1938 FB · 1931 AZ 1936 SG · 1941 BD 1943 VJ · 1951 CL1 1953 VD · 1958 FE 1958 GX | |
| Minor planet category | main-belt · Flora[3] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.04 yr (31,427 days) |
| |{{{apsis}}}|helion}} | 2.5114 AU |
| |{{{apsis}}}|helion}} | 1.9550 AU |
| 2.2332 AU | |
| Eccentricity | 0.1246 |
| Orbital period | 3.34 yr (1,219 days) |
| Mean anomaly | 18.859° |
| Mean motion | 0° 17m 43.08s / day |
| Inclination | 6.7964° |
| Longitude of ascending node | 30.145° |
| 50.114° | |
| Physical characteristics | |
| Dimensions | 11.08±0.5 km (IRAS:8)[3][4] 12.16±0.52 km[5] |
| Rotation period | 5.16±0.04 h[6] 5.2885±0.0005 h[7] 5.3±0.2 h[8] |
| Geometric albedo | 0.211±0.019[5] 0.2480±0.025 (IRAS:8)[3][4] 0.2501 (SIMPS)[3] |
| S[3] | |
| Absolute magnitude (H) | 11.8[1] · 11.9[3][5] · 11.9±0.06[8][9] · 11.91[4] |
1675 Simonida, provisional designation 1938 FB, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. Discovered by Milorad Protić in 1938, it was later named after the medieval Byzantine princess Simonida.[2]
Discovery
Simonida was discovered on 20 March 1938, by Serbian astronomer Milorad Protić at Belgrade Astronomical Observatory.[10] On the same night, it was independently discovered by Belgian astronomer Fernand Rigaux at Uccle Observatory in Belgium.[2]
Classification and orbit
The S-type asteroid is a member of the Flora family, a large population of stony asteroids in the main-belt. It orbits the Sun at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,219 days). Its orbit has an eccentricity of 0.12 and an inclination of 7° with respect to the ecliptic.[1] Simonida's first observation was a precovery taken at Lowell Observatory in 1931, extending the body's observation arc by 7 years prior to its official discovery observation.[10]
Physical characteristics
Lightcurves
In March 1988, Polish astronomer Wiesław Z. Wiśniewski obtained a lightcurve of Simonida that gave a rotation period of 5.3 hours with a brightness variation of 0.26 magnitude ({{{1}}}).[8] In January 2004, astronomer A. Kryszczynska at Poznań Observatory measured a period of 5.2885 hours with an amplitude of 0.50 magnitude ({{{1}}}).[7] In January 2008, photometric observations by astronomers Martine Castets, Bernard Trégon, Arnaud Leroy and Raoul Behrend gave a rotation period of 5.16 hours with a brightness variation of 0.21 ({{{1}}}).[6]
Diameter and albedo
According to the space-based Japanese Akari satellite, Simonida measures 12.16 kilometers in diameter, and its surface has an albedo of 0.211.[5] The Collaborative Asteroid Lightcurve Link, however, agrees with the results obtained by 8 observations of the Infrared Astronomical Satellite IRAS, that gave a diameter of 11.08 kilometers and an albedo of 0.25 with an absolute magnitude of 11.9.[3][4]
Naming
This minor planet was named for Byzantine princess and queen consort Simonida, the wife of medieval Serbian king Stefan Milutin and symbol of beauty in former Yugoslavia.[2] The official naming citation was published by the Minor Planet Center on 1 January 1973 (M.P.C. 3359).[11]
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1675 Simonida (1938 FB)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001675. Retrieved 6 June 2017.
- ↑ 2.0 2.1 2.2 2.3 Schmadel, Lutz D. (2007). "(1675) Simonida". Dictionary of Minor Planet Names – (1675) Simonida. Springer Berlin Heidelberg. p. 133. doi:10.1007/978-3-540-29925-7_1676. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 "LCDB Data for (1675) Simonida". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1675%7CSimonida. Retrieved 23 December 2016.
- ↑ 4.0 4.1 4.2 4.3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode: 2004PDSS...12.....T. https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab. Retrieved 17 October 2019.
- ↑ 5.0 5.1 5.2 5.3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U. (online, AcuA catalog p. 153)
- ↑ 6.0 6.1 Behrend, Raoul. "Asteroids and comets rotation curves – (1675) Simonida". Geneva Observatory. http://obswww.unige.ch/~behrend/page4cou.html#001675. Retrieved 23 December 2016.
- ↑ 7.0 7.1 Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; Ivanova, V.; Apostolovska, G. et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region". Astronomy and Astrophysics 546: 51. doi:10.1051/0004-6361/201219199. Bibcode: 2012A&A...546A..72K. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A..72K. Retrieved 23 December 2016.
- ↑ 8.0 8.1 8.2 Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference 26: 1511. Bibcode: 1995LPI....26.1511W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1995LPI....26.1511W. Retrieved 23 December 2016.
- ↑ Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus 221 (1): 365–387. doi:10.1016/j.icarus.2012.07.026. Bibcode: 2012Icar..221..365P. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221..365P. Retrieved 23 December 2016.
- ↑ 10.0 10.1 "1675 Simonida (1938 FB)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1675. Retrieved 23 December 2016.
- ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7. https://archive.org/details/dictionaryminorp2008schm.
External links
- Asteroid Lightcurve Database (LCDB), query form (info )
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1675 Simonida at AstDyS-2, Asteroids—Dynamic Site
- 1675 Simonida at the JPL Small-Body Database
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