The historical symbol for Egeria was a buckler. It is in the pipeline for Unicode 17.0 as U+1CEC6 ().[11][12]
OCCULT4 visualization of 13 Egeria occultation event of January 22, 2008
Egeria occulted a star on January 8, 1992. Its disc was determined to be quite circular (217×196 km). On January 22, 2008, it occulted another star, and this occultation was timed by several observers in New Mexico and Arizona, coordinated by the IOTA Asteroid Occultation Program.[3] The result showed that Egeria presented an approximately circular profile to Earth of 214.8×192 km, well in agreement with the 1992 occultation.[citation needed] It has also been studied by radar.[13]
In 1988 a search for satellites or dust orbiting this asteroid was performed using the UH88 telescope at the Mauna Kea Observatories, but the effort came up empty.[14] Spectral analysis of Egeria shows it to be unusually high in water content, 10.5–11.5% water by mass.[15] This makes Egeria a prominent candidate for future water-mining ventures.
A three-dimensional model of 13 Egeria based on its light curve
^Noah Webster (1884) A Practical Dictionary of the English Language
^ abcdef"JPL Small-Body Database Browser: 13 Egeria" (2008-11-04 last obs). Retrieved 8 April 2016.
^ abTimerson, Brad. . Archived from the original on 16 April 2014. Retrieved 19 January 2010.
^ abcdeP. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56
^ abJames Baer, Steven Chesley & Robert Matson (2011) "Astrometric masses of 26 asteroids and observations on asteroid porosity." The Astronomical Journal, Volume 141, Number 5
^. AstroSurf. Archived from the original on 27 November 2005. Retrieved 3 November 2008.
^"Asteroid Data Archive". Planetary Science Institute. Archived from the original on 23 May 2006. Retrieved 3 November 2008.
^apmag 9.71 (2061-Nov-06) to 12.46 (1990-Mar-12) JPL Horizons daily output for 1950 to 2099
^Rivkin, A. S.; J. K. Davies; S. L. Ellison; L. A. Lebofsky. "High-resolution 2.5–3.5 𝜇M Observations of C-, B- and G-class asteroids" (PDF). Retrieved 20 April 2008.
^Schmadel, Lutz D. (2003). Dictionary of minor planet names. Vol. 1 (5th ed.). Berlin Heidelberg New York: Springer-Verlag. p. 16. ISBN3-540-00238-3.
^Bala, Gavin Jared; Miller, Kirk (18 September 2023). "Unicode request for historical asteroid symbols" (PDF). unicode.org. Unicode. Retrieved 26 September 2023.
^Unicode. "Proposed New Characters: The Pipeline". unicode.org. The Unicode Consortium. Retrieved 6 November 2023.
^"Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 30 October 2011.
^Gradie, J.; Flynn, L. (March 1988), "A Search for Satellites and Dust Belts Around Asteroids: Negative Results", Abstracts of the Lunar and Planetary Science Conference, vol. 19, pp. 405–406, Bibcode:1988LPI....19..405G.
^Rivkin, A. S.; Davies, J. K. (2002). "Calculated water concentrations on C-class asteroids" (PDF). Lunar and Planetary Science (XXXIII).
External linksedit
. Minor Planet Center. Archived from the original on 4 March 2016. Retrieved 26 May 2011. (displays Elong from Sun and V mag for 2011)
13 Egeria at AstDyS-2, Asteroids—Dynamic Site
Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
May 04, 2024
egeria, other, uses, egeria, egeria, minor, planet, designation, large, main, belt, type, asteroid, discovered, annibale, gasparis, november, 1850, egeria, named, urbain, verrier, whose, computations, discovery, neptune, after, mythological, nymph, egeria, ari. For other uses see Egeria Egeria minor planet designation 13 Egeria is a large main belt G type asteroid 9 It was discovered by Annibale de Gasparis on November 2 1850 Egeria was named by Urbain Le Verrier whose computations led to the discovery of Neptune after the mythological nymph Egeria of Aricia Italy the wife of Numa Pompilius second king of Rome 10 13 EgeriaDiscoveryDiscovered byAnnibale de GasparisDiscovery siteNaples Obs Discovery date2 November 1850DesignationsMPC designation 13 EgeriaPronunciation ɪ ˈ dʒ ɪer i e 1 Named afterEgeriaMinor planet categoryMain beltAdjectivesEgerianSymbol historical Orbital characteristics 2 Epoch 13 January 2016 JD 2457400 5 Uncertainty parameter 0Observation arc60342 days 165 21 yr Aphelion2 7927 AU 417 78 Gm Perihelion2 36115 AU 353 223 Gm Semi major axis2 57690 AU 385 499 Gm Eccentricity0 083726Orbital period sidereal 4 14 yr 1510 9 d Average orbital speed18 56 km sMean anomaly261 863 Mean motion0 14m 17 736s dayInclination16 539 Longitude of ascending node43 239 Argument of perihelion80 294 Earth MOID1 43999 AU 215 419 Gm Jupiter MOID2 35966 AU 353 000 Gm TJupiter3 364Physical characteristicsDimensions214 8 km 192 km 3 Mean diameter202 3 km 4 207 6 8 3 km IRAS 2 Flattening0 24 a Mass 9 2 2 1 1018 kg 4 15 9 4 4 1018 kg b 5 Mean density2 13 0 49 g cm3 4 3 4 1 0 g cm3 5 Equatorial surface gravity 0 0580 m s2Equatorial escape velocity 0 1098 km sSynodic rotation period0 2935 d 6 7 045 h 2 Geometric albedo0 087 4 0 049 0 028 2 7 Temperature 174 KSpectral typeG type asteroid 2 Apparent magnitude9 71 to 12 46 8 Absolute magnitude H 6 92 2 The historical symbol for Egeria was a buckler It is in the pipeline for Unicode 17 0 as U 1CEC6 11 12 OCCULT4 visualization of 13 Egeria occultation event of January 22 2008 Egeria occulted a star on January 8 1992 Its disc was determined to be quite circular 217 196 km On January 22 2008 it occulted another star and this occultation was timed by several observers in New Mexico and Arizona coordinated by the IOTA Asteroid Occultation Program 3 The result showed that Egeria presented an approximately circular profile to Earth of 214 8 192 km well in agreement with the 1992 occultation citation needed It has also been studied by radar 13 In 1988 a search for satellites or dust orbiting this asteroid was performed using the UH88 telescope at the Mauna Kea Observatories but the effort came up empty 14 Spectral analysis of Egeria shows it to be unusually high in water content 10 5 11 5 water by mass 15 This makes Egeria a prominent candidate for future water mining ventures A three dimensional model of 13 Egeria based on its light curve Contents 1 See also 2 Notes 3 References 4 External linksSee also editFormer classification of planetsNotes edit Flattening derived from the maximum aspect ratio c a f 1 c a displaystyle f 1 frac c a nbsp where c a 0 76 0 06 4 8 0 2 2 10 12 M References edit Noah Webster 1884 A Practical Dictionary of the English Language a b c d e f JPL Small Body Database Browser 13 Egeria 2008 11 04 last obs Retrieved 8 April 2016 a b Timerson Brad IOTA Asteroid Occultation Results for 2008 Archived from the original on 16 April 2014 Retrieved 19 January 2010 a b c d e P Vernazza et al 2021 VLT SPHERE imaging survey of the largest main belt asteroids Final results and synthesis Astronomy amp Astrophysics 54 A56 a b James Baer Steven Chesley amp Robert Matson 2011 Astrometric masses of 26 asteroids and observations on asteroid porosity The Astronomical Journal Volume 141 Number 5 Lightcurves and map data on numbered asteroids N 1 to 52225 AstroSurf Archived from the original on 27 November 2005 Retrieved 3 November 2008 Asteroid Data Archive Planetary Science Institute Archived from the original on 23 May 2006 Retrieved 3 November 2008 apmag 9 71 2061 Nov 06 to 12 46 1990 Mar 12 JPL Horizons daily output for 1950 to 2099 Rivkin A S J K Davies S L Ellison L A Lebofsky High resolution 2 5 3 5 𝜇M Observations of C B and G class asteroids PDF Retrieved 20 April 2008 Schmadel Lutz D 2003 Dictionary of minor planet names Vol 1 5th ed Berlin Heidelberg New York Springer Verlag p 16 ISBN 3 540 00238 3 Bala Gavin Jared Miller Kirk 18 September 2023 Unicode request for historical asteroid symbols PDF unicode org Unicode Retrieved 26 September 2023 Unicode Proposed New Characters The Pipeline unicode org The Unicode Consortium Retrieved 6 November 2023 Radar Detected Asteroids and Comets NASA JPL Asteroid Radar Research Retrieved 30 October 2011 Gradie J Flynn L March 1988 A Search for Satellites and Dust Belts Around Asteroids Negative Results Abstracts of the Lunar and Planetary Science Conference vol 19 pp 405 406 Bibcode 1988LPI 19 405G Rivkin A S Davies J K 2002 Calculated water concentrations on C class asteroids PDF Lunar and Planetary Science XXXIII External links edit Elements and Ephemeris for 13 Egeria Minor Planet Center Archived from the original on 4 March 2016 Retrieved 26 May 2011 displays Elong from Sun and V mag for 2011 13 Egeria at AstDyS 2 Asteroids Dynamic Site Ephemeris Observation prediction Orbital info Proper elements Observational info 13 Egeria at the JPL Small Body Database nbsp Close approach Discovery Ephemeris Orbit diagram Orbital elements Physical parameters Retrieved from https en wikipedia org w index php title 13 Egeria amp oldid 1220506369, wikipedia, wiki, book, books, library,
