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63 Ausonia

From Wikipedia, the free encyclopedia
Main-belt asteroid

63 Ausonia
Discovery [1][2]
Discovered byA. de Gasparis
Discovery siteCapodimonte Obs.
Discovery date10 February 1861
Designations
(63) Ausonia
Pronunciation/ɔːˈsoʊniə/[3]
Named after
Ausonia[4]
(ancient name for Italy)
1947 NA · 1948 WT
main-belt · (inner)
Vesta[5][6]
AdjectivesAusonian/ɔːˈsoʊniən/[7]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc156.34 yr (57,104 days)
Aphelion2.6993AU
Perihelion2.0910 AU
2.3951 AU
Eccentricity0.1270
3.71yr (1,354 days)
340.16°
0° 15m 57.24s / day
Inclination5.7763°
337.75°
295.78°
Physical characteristics
93±3 km[8]87.5±1.1 km[9]
90±18 km[10]
94.4±7.2 km[11]
103.0±2.8 km[12]
103.14±2.4 km[13]
Flattening0.55[a]
Mass(1.2±0.2)×1018 kg[8]
(1.53±0.15)×1018 kg[11]
2.96±0.61 g/cm3[8]
3.46±0.86 g/cm3[11]
9.282±0.003h[14]
9.29 h[15]
9.293±0.001 h[16]
9.294 h[17]
9.29757 h[18]
9.29758 h[19]
9.29759 h[10][20]
9.29766 h[21]
9.298 h[22]
9.299 h[23]
0.195 (calculated)[8]
0.125±0.016[24][1]
0.1586±0.008[13]
0.1591±0.0277[12]
0.232±0.008[9]
0.25±0.18[25]
Tholen =S [1]
SMASS =Sa [1]
S [5][26]
B–V = 0.916[1]
U–B = 0.500[1]
7.55[5][9][12][13][25][24]
7.13[1]

63 Ausonia is a stony Vestianasteroid from the inner region of theasteroid belt, approximately 100 kilometers (60 miles) in diameter. It was discovered by Italian astronomerAnnibale de Gasparis on 10 February 1861, from theAstronomical Observatory of Capodimonte, in Naples, Italy. The initial choice of name for the asteroid was "Italia", afterItaly, but this was modified toAusonia, an ancient classical name for the Italian region.[4]

Lightcurve-based 3D-model ofAusonia

Orbit and classification

[edit]

Ausonia is a member of theVesta family.[5][6] Vestian asteroids have a composition akin to cumulateeucrites (HED meteorites) and are thought to have originated deep within4 Vesta's crust, possibly from theRheasilvia crater, a largeimpact crater on its southern hemisphere near the South pole, formed as a result of a subcatastrophic collision. Vesta is the main belt'ssecond-largest andsecond-most-massive body afterCeres.[27][28]

It orbits the Sun in theinner asteroid belt at a distance of 2.1–2.7 AU once every 3 years and 9 months (1,354 days;semi-major axis of 2.40 AU). Its orbit has aneccentricity of 0.13 and aninclination of 6° with respect to theecliptic.[1]

Physical characteristics

[edit]

In theTholen classification,Ausonia is a stonyS-type asteroid, while in theSMASS classification, it is an Sa-subtype, that transitions from the S-type to the uncommonA-type asteroid.[1] The body's stony composition has also been confirmed by polarimetric observations in 2017.[26] Based on itslightcurve, a smallmoon had been suggested but never confirmed.[29]

According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Ausonia measures between 87.47 and 116.044 kilometers in diameter and its surface has analbedo between 0.125 and 0.25.[9][10][12][13][25][24] TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.2082 and a diameter of 90 kilometers based on anabsolute magnitude of 7.55.[5]

Ausonia was in a study using the HubbleFGS. Other studied asteroids included15 Eunomia,43 Ariadne,44 Nysa, and624 Hektor.[30] In 1976,Ausonia was the subject of a photometric study by theObservatory of Turin in Italy.[22] A lightcurve ofAusonia was obtained with theESO 0.5-metre telescope atLa Silla Observatory in 1980.[31]

Notes

[edit]
  1. ^Flattening derived from the maximum aspect ratio (c/a):f=1−ca{\displaystyle f=1-{\frac {c}{a}}}, where (c/a) =0.45±0.02.[8]

References

[edit]
  1. ^abcdefghij"JPL Small-Body Database Browser: 63 Ausonia" (2017-07-05 last obs.). Jet Propulsion Laboratory. Retrieved3 February 2018.
  2. ^"63 Ausonia".Minor Planet Center. Retrieved3 February 2018.
  3. ^Noah Webster (1884)A Practical Dictionary of the English Language
  4. ^abSchmadel, Lutz D. (2007).Dictionary of Minor Planet Names – (63) Ausonia. Springer Berlin Heidelberg. p. 21.ISBN 978-3-540-00238-3. Retrieved3 February 2018.
  5. ^abcde"LCDB Data for (63) Ausonia". Asteroid Lightcurve Database (LCDB). Retrieved3 February 2018.
  6. ^ab"Asteroid 63 Ausonia".Small Bodies Data Ferret. Retrieved24 October 2019.
  7. ^"Ausonian".Oxford English Dictionary (Online ed.).Oxford University Press. (Subscription orparticipating institution membership required.)
  8. ^abcdeP. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis.Astronomy & Astrophysics 54, A56
  9. ^abcdUsui, 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.Bibcode:2011PASJ...63.1117U.doi:10.1093/pasj/63.5.1117. (online,AcuA catalog p. 153)
  10. ^abcDurech, Josef; Kaasalainen, Mikko; Herald, David; Dunham, David; Timerson, Brad; Hanus, Josef; et al. (August 2011). "Combining asteroid models derived by lightcurve inversion with asteroidal occultation silhouettes".Icarus.214 (2):652–670.arXiv:1104.4227.Bibcode:2011Icar..214..652D.doi:10.1016/j.icarus.2011.03.016.S2CID 119271216.
  11. ^abcCarry, B. (December 2012), "Density of asteroids",Planetary and Space Science,73 (1):98–118,arXiv:1203.4336,Bibcode:2012P&SS...73...98C,doi:10.1016/j.pss.2012.03.009,S2CID 119226456 See Table 1.
  12. ^abcdMainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results".The Astrophysical Journal.741 (2): 25.arXiv:1109.6407.Bibcode:2011ApJ...741...90M.doi:10.1088/0004-637X/741/2/90.S2CID 118700974.
  13. ^abcdTedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004)."IRAS Minor Planet Survey V6.0".NASA Planetary Data System.12: IRAS-A-FPA-3-RDR-IMPS-V6.0.Bibcode:2004PDSS...12.....T. Retrieved22 October 2019.
  14. ^Riccioli, D.; Blanco, C.; Cigna, M. (June 2001). "Rotational periods of asteroids II".Planetary and Space Science.49 (7):657–671.Bibcode:2001P&SS...49..657R.doi:10.1016/S0032-0633(01)00014-9.
  15. ^Lagerkvist, C.-I.; Magnusson, P.; Williams, I. P.; Buontempo, M. E.; Gibbs, P.; Morrison, L. V. (June 1989). "Physical studies of asteroids. XIX - Phase relations and composite lightcurves obtained with the Carlsberg Meridian Circle".Astronomy and Astrophysics Supplement Series.78 (3):519–532.Bibcode:1989A&AS...78..519L.ISSN 0365-0138.
  16. ^Behrend, Raoul."Asteroids and comets rotation curves – (63) Ausonia". Geneva Observatory. Retrieved3 February 2018.
  17. ^Lupishko, D. F.; Velichko, F. P. (February 1987). "The sense of rotation of asteroids 21, 63, 216, and 349".Kinematika I Fizika Nebesnykh Tel.3: 57–65.InRussian.Bibcode:1987KFNT....3...57L.ISSN 0233-7665.
  18. ^Magnusson, P. (October 1986). "Distribution of spin axes and senses of rotation for 20 large asteroids".Icarus.68 (1):1–39.Bibcode:1986Icar...68....1M.doi:10.1016/0019-1035(86)90072-2.ISSN 0019-1035.
  19. ^De Angelis, G. (May 1995). "Asteroid spin, pole and shape determinations".Planetary and Space Science.43 (5):649–682.Bibcode:1995P&SS...43..649D.doi:10.1016/0032-0633(94)00151-G.
  20. ^Torppa, Johanna; Kaasalainen, Mikko; Michalowski, Tadeusz; Kwiatkowski, Tomasz; Kryszczynska, Agnieszka; Denchev, Peter; et al. (August 2003). "Shapes and rotational properties of thirty asteroids from photometric data".Icarus.164 (2):346–383.Bibcode:2003Icar..164..346T.doi:10.1016/S0019-1035(03)00146-5.
  21. ^Michalowski, Tadeusz (October 1996). "Pole and Shape Determination for 12 Asteroids".Icarus.123 (2):456–462.Bibcode:1996Icar..123..456M.doi:10.1006/icar.1996.0171.
  22. ^abScaltriti, F.; Zappala, V. (August 1977). "A photometric study of the minor planet 63 Ausonia".Icarus.31 (4):498–502.Bibcode:1977Icar...31..498S.doi:10.1016/0019-1035(77)90151-8.
  23. ^Hainaut-Rouelle, M.-C.; Hainaut, O. R.; Detal, A. (July 1995). "Lightcurves of selected minor planets".Astronomy and Astrophysics Supplement.112: 125.Bibcode:1995A&AS..112..125H.
  24. ^abcMasiero, 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.S2CID 46350317.
  25. ^abcNugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos".The Astrophysical Journal.814 (2): 13.arXiv:1509.02522.Bibcode:2015ApJ...814..117N.doi:10.1088/0004-637X/814/2/117.S2CID 9341381.
  26. ^abBelskaya, I. N.; Fornasier, S.; Tozzi, G. P.; Gil-Hutton, R.; Cellino, A.; Antonyuk, K.; et al. (March 2017). "Refining the asteroid taxonomy by polarimetric observations".Icarus.284:30–42.Bibcode:2017Icar..284...30B.doi:10.1016/j.icarus.2016.11.003.hdl:11336/63617.
  27. ^Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families".Asteroids IV. pp. 297–321.arXiv:1502.01628.Bibcode:2015aste.book..297N.doi:10.2458/azu_uapress_9780816532131-ch016.ISBN 9780816532131.S2CID 119280014.
  28. ^Kelley, Michael S.; Vilas, Faith; Gaffey, Michael J.; Abell, Paul A. (September 2003)."Quantified mineralogical evidence for a common origin of 1929 Kollaa with 4 Vesta and the HED meteorites".Icarus.165 (1):215–218.Bibcode:2003Icar..165..215K.doi:10.1016/S0019-1035(03)00149-0.
  29. ^Johnston, Wm. Robert (29 December 2017)."Other Reports of Asteroid/TNO Companions".Johnston's Archive. Retrieved3 February 2018.
  30. ^Tanga, P.; Hestroffer, D.; Cellino, A.; Lattanzi, M.; Di Martino, M.; Zappalà, V. (April 2003)."Asteroid observations with the Hubble Space Telescope. II. Duplicity search and size measurements for 6 asteroids".Astronomy and Astrophysics.401 (2):733–741.Bibcode:2003A&A...401..733T.doi:10.1051/0004-6361:20030032.
  31. ^Lagerkvist, Claes-Ingvar (22 December 1980)."Physical Studies of Asteroids – an Observing Programme at ESO"(PDF).The Messenger. Retrieved3 February 2018.

External links

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