1330 Spiridonia
{{Short description|Dark background asteroid of primitive composition}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| name = 1330 Spiridonia
| background = #D6D6D6
| image =
| image_size =
| caption =
| discoverer = V. Albitzkij
| discovery_site = Simeiz Obs.
| discovered = 17 February 1925
| mpc_name = (1330) Spiridonia
| alt_names = 1925 DB{{·}}1931 FA
{{mp|1933 QK|1}}{{·}}1942 ED
1950 OP{{·}}1959 EZ
A922 SA
| pronounced =
| named_after = Spiridon Zaslavskij
{{small|(discoverer's brother-in-law)}}
| mp_category = main-belt{{·}}{{small|(outer)}}
background
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 95.12 yr (34,741 days)
| aphelion = 3.4092 AU
| perihelion = 2.9306 AU
| semimajor = 3.1699 AU
| eccentricity = 0.0755
| period = 5.64 yr (2,061 days)
| mean_anomaly = 104.05°
| mean_motion = {{Deg2DMS|0.1746|sup=ms}} / day
| inclination = 15.957°
| asc_node = 158.82°
| arg_peri = 4.4832°
| dimensions = {{val|50.73|15.63}} km
{{val|51.96|16.95}} km
{{val|55.08|4.9}} km
55.17 km {{small|(derived)}}
{{val|68.417|0.584}} km
{{val|69.917|1.110}} km
{{val|73.75|1.44}} km
{{val|78.496|27.90}} km
| rotation = {{val|9.626|0.002}} h
{{val|9.67|0.01}} h
{{val|10.3|0.03}} h
{{val|10.3|0.3}} h
{{val|10.302|0.001}} h
| albedo = {{val|0.029|0.001}}
{{val|0.0297|0.0177}}
{{val|0.0309|0.0051}}
{{val|0.032|0.004}}
{{val|0.0498|0.010}}
0.0580 {{small|(derived)}}
{{val|0.06|0.04}}
{{val|0.06|0.05}}
| spectral_type = Tholen {{=}} P
B–V {{=}} 0.670
U–B {{=}} 0.170
| abs_magnitude = 10.00{{·}}10.03{{·}}10.17{{·}}{{val|10.26|0.10}}
}}
1330 Spiridonia, provisional designation {{mp|1925 DB}}, is a dark background asteroid of primitive composition, located in the outer regions of the asteroid belt, approximately 65 kilometers in diameter. It was discovered on 17 February 1925, by Soviet astronomer Vladimir Albitsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after the discoverer's brother-in-law, Spiridon Zaslavskij.
Orbit and classification
Spiridonia is a non-family asteroid from the main belt's background population. It orbits the Sun in the outer asteroid belt at a distance of 2.9–3.4 AU once every 5 years and 8 months (2,061 days; semi-major axis of 3.17 AU). Its orbit has an eccentricity of 0.08 and an inclination of 16° with respect to the ecliptic.
The asteroid was first identified as {{mp|A922 SA}} at Heidelberg Observatory in September 1922. The body's observation arc begins at Yerkes Observatory in October 1934, more than 9 years after its official discovery observation at Simeiz.
Physical characteristics
In the Tholen classification, Spiridonia is a primitive P-type asteroid.
= Rotation period =
Several rotational lightcurves of Spiridonia have been obtained from photometric observations since 2004. Analysis of the best-rated lightcurve by American photometrist Robert Stephens at the Santana Observatory {{small|(646)}} from April 2005, gave a rotation period of 9.67 hours with a brightness amplitude of 0.16 magnitude ({{small|U=3}}).
= Diameter and albedo =
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Spiridonia measures between 50.73 and 78.496 kilometers in diameter and its surface has an albedo between 0.029 and 0.06.
The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0580 and a diameter of 55.17 kilometers based on an absolute magnitude of 10.0.
1330 Spiridonia has been observed to occult 5 stars between 1993 and 2023.
Naming
This minor planet was named after the discoverer's brother-in-law, Spiridon Zaslavskij (1883–1942), who was also the uncle of Viktorovich Zaslavskij (1925–1944), after whom the discoverer named the asteroid 1030 Vitja. The official {{MoMP|1330|naming citation}} was published by the Minor Planet Center on 15 July 1968 ({{small|M.P.C. 2882}}).
References
{{reflist|30em|refs=
|type = 2017-11-02 last obs.
|title = JPL Small-Body Database Browser: 1330 Spiridonia (1925 DB)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001330
|publisher = Jet Propulsion Laboratory
|accessdate = 29 November 2017}}
|title = Dictionary of Minor Planet Names – (1330) Spiridonia
|last = Schmadel | first = Lutz D.
|publisher = Springer Berlin Heidelberg
|page = 108
|date = 2007
|isbn = 978-3-540-00238-3
|doi = 10.1007/978-3-540-29925-7_1331 |chapter = (1330) Spiridonia }}
|title = 1330 Spiridonia (1925 DB)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1330
|accessdate = 29 November 2017}}
|title = Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008)
|chapter = Appendix – Publication Dates of the MPCs
|last = Schmadel |first=Lutz D.
|date = 2009
|publisher = Springer Berlin Heidelberg
|page = 221
|isbn = 978-3-642-01964-7
|doi = 10.1007/978-3-642-01965-4|bibcode = 2009dmpn.book.....S
}}
|title = Asteroids and comets rotation curves – (1330) Spiridonia
|last = Behrend |first = Raoul
|publisher = Geneva Observatory
|url = http://obswww.unige.ch/~behrend/page4cou.html#001330
|accessdate = 29 November 2017}}
|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
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|issue = 2
|page = 11
|bibcode = 2014ApJ...791..121M
|doi = 10.1088/0004-637X/791/2/121
|arxiv = 1406.6645|s2cid = 119293330 }}
|title = Asteroid 1330 Spiridonia – Proper Elements
|publisher = AstDyS-2, Asteroids – Dynamic Site
|url = https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1330
|access-date= 29 October 2019}}
|title = LCDB Data for (1330) Spiridonia
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1330%7CSpiridonia
|accessdate = 29 November 2017}}
|display-authors = 6
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|date = November 2011
|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results
|journal = The Astrophysical Journal
|volume = 741
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|bibcode = 2011ApJ...741...90M
|doi = 10.1088/0004-637X/741/2/90
|arxiv = 1109.6407|s2cid = 35447010 }}
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|first9 = Satoshi |last9 = Takita
|first10 = Shinki |last10 = Oyabu
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|date = October 2011
|title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey
|journal = Publications of the Astronomical Society of Japan
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|first1 = E. F. |last1 = Tedesco
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|date = October 2004
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|accessdate = 17 October 2019}}
|display-authors = 6
|first1 = Joseph R. |last1 = Masiero
|first2 = C. |last2 = Nugent
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|first4 = E. L. |last4 = Wright
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|date = October 2017
|title = NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos
|journal = The Astronomical Journal
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|display-authors = 6
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|first2 = A. |last2 = Mainzer
|first3 = J. |last3 = Bauer
|first4 = R. M. |last4 = Cutri
|first5 = E. A. |last5 = Kramer
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|title = NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos
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|issue = 3
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|bibcode = 2016AJ....152...63N
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|display-authors = 6
|first1 = C. R. |last1 = Nugent
|first2 = A. |last2 = Mainzer
|first3 = J. |last3 = Masiero
|first4 = J. |last4 = Bauer
|first5 = R. M. |last5 = Cutri
|first6 = T. |last6 = Grav
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|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2005MPBu...32...66S
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|access-date= 29 November 2017}}
|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
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|first11 = Heather |last11 = Flewelling
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}}
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|1330}}
- {{JPL small body}}
{{Minor planets navigator |1329 Eliane |number=1330 |1331 Solvejg}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Spiridonia}}