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{{Infobox Planet | bgcolour=#FFFFC0 |
{{Infobox Planet | bgcolour=#FFFFC0 |
name=5 Astraea
name=5 Astraea
| symbol=[[File:5 Astraea Symbol.svg|25px|Astronomical symbol for 5 Astraea]]
| symbol=[[File:Astraea symbol (bold).svg|24px|Astronomical symbol for 5 Astraea]]
| discoverer=[[Karl Ludwig Hencke]]
| discoverer=[[Karl Ludwig Hencke]]
| discovered=[[December 8]], [[1845]]
| discovered=[[December 8]], [[1845]]
| mean_anomaly=194.442°
| mean_anomaly=194.442°
| avg_speed=18.39 km/[[second|s]]
| avg_speed=18.39 km/[[second|s]]
| dimensions=167×123×82 km<ref name=IRAS>[http://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab Supplemental IRAS Minor Planet Survey]</ref><ref name=Lopez-Gonzales>[http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2005P%26SS...53.1147L&db_key=AST&data_type=HTML&format=&high=437a3039ff02368 M. J. López-Gonzáles & E. Rodríguez ''Lightcurves and poles of seven asteroids''], Planetary and Space Science, Vol. 53, p. 1147 (2005).</ref>
| dimensions=167×123×82 km<ref name=IRAS>{{Cite web |title=Supplemental IRAS Minor Planet Survey |url=http://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab |access-date=2007-12-17 |archive-date=2006-06-23 |archive-url=https://web.archive.org/web/20060623213811/http://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab |url-status=dead }}</ref><ref name=Lopez-Gonzales>[http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2005P%26SS...53.1147L&db_key=AST&data_type=HTML&format=&high=437a3039ff02368 M. J. López-Gonzáles & E. Rodríguez ''Lightcurves and poles of seven asteroids''], Planetary and Space Science, Vol. 53, p. 1147 (2005).</ref>
| mass=~2.4{{e|18}} [[kilogram|kg]]
| mass=~2.4{{e|18}} [[kilogram|kg]]
| density=~2.7 g/[[cubic centimetre|cm³]]<ref name=Krasinsky>[[G. A. Krasinsky]] ''et al.'' ''Hidden Mass in the Asteroid Belt'', Icarus, Vol. 158, p. 98 (2002).</ref>
| density=~2.7 g/[[cubic centimetre|cm³]]<ref name=Krasinsky>[[G. A. Krasinsky]] ''et al.'' ''Hidden Mass in the Asteroid Belt'', Icarus, Vol. 158, p. 98 (2002).</ref>
There has been only one seen [[star|stellar]] [[occultation]] by Astraea ([[February 2]], [[1991]]).
There has been only one seen [[star|stellar]] [[occultation]] by Astraea ([[February 2]], [[1991]]).
== 5 Astraea Media ==
<gallery widths='160px' heights='100%' mode='traditional' caption=''>
File:Astraea symbol (astrology, bold).svg|The modern astrological symbol for 5 Astraea
</gallery>
== References ==
== References ==
* {{cite web | last = Yeomans | first = Donald K. | url = http://ssd.jpl.nasa.gov/?horizons | title = Horizons system | publisher = NASA JPL | access-date = 2007-03-20 }} — Horizons can be used to obtain a current ephemeris
* {{cite web | last = Yeomans | first = Donald K. | url = http://ssd.jpl.nasa.gov/?horizons | title = Horizons system | publisher = NASA JPL | access-date = 2007-03-20 }} — Horizons can be used to obtain a current ephemeris
{{reflist}}
{{reflist}}
== Other websites ==
== Other websites ==
* [http://adsabs.harvard.edu//full/seri/AN.../0023//0000211.000.html AN '''23''' (1846) 393] (in German)
* [http://adsabs.harvard.edu//full/seri/AN.../0023//0000211.000.html AN '''23''' (1846) 393] (in German)