What is 2101 Adonis?
{{Infobox Planet | bgcolour=#FFFFC0 | name=2101 Adonis | discoverer=[[Eugene Delporte]] | discovered=[[February 12]], [[1936]] | alt_names=1936 CA | mp_category=[[Apollo asteroid|Apollo]], [[mars-crosser asteroid|Mars crosser]] | epoch=[[October 22]], [[2004]] ([[Julian day|JD]] 2453300.5) | semimajor=280.289 [[Giga|G]]m (1.874 [[Astronomical unit|AU]]) | perihelion=65.906 Gm (0.441 AU) | aphelion=494.673 Gm (3.307 AU) | eccentricity=0.765 | period=936.742 [[day|d]] (2.56 [[Julian year (astronomy)|a]]) | inclination=1.349[[degree (angle)|°]] | asc_node=350.580° | arg_peri=42.438° | mean_anomaly=307.406° | avg_speed=18.10 km/[[second|s]] | dimensions=0.5—1.2 km [http://earn.dlr.de/nea/02101.htm <sup>1</sup>] | mass=0.13—1.8×10<sup>12</sup> [[kilogram|kg]] | density=2.0? g/[[cubic centimetre|cm³]] | surface_grav=0.0001—0.0003 m/s² | escape_velocity=0.0003—0.0006 km/s | rotation=? d | spectral_type=? | abs_magnitude=18.7 | albedo=0.20—0.04 [http://earn.dlr.de/nea/02101.htm <sup>1</sup>] | single_temperature=197—207 [[kelvin|K]]}} '''2101 Adonis''' was one of the first [[near-Earth asteroid]]s to be found. It was found by [[Eugene Delporte]] in 1936 and named after [[Adonis]], the beautiful youth with whom the goddess [[Venus (mythology)|Venus]] fell in love. Adonis is thought to measure about 1&nbsp;km in diameter. In the close approach that led to the first time it was found, not enough sightings could be made to find out it's orbit, and Adonis was lost until 1977 when it was found once again by [[Charles T. Kowal]]. Adonis was the second [[Apollo asteroid]] to be found (after [[1862 Apollo]] itself). It may be a dead [[comet]], and may be the source of some meteor showers. [http://64.233.167.104/search?q=cache:bIucDKxXIYEJ:www.aanda.org/articles/aa/ps/2003/01/aa3030.ps.gz+adonis+asteroid&hl=en&ct=clnk&cd=29&gl=us&lr=lang_en ] It comes within 30&nbsp;Gm of the Earth six times in the 21st century, the nearest being 5.3&nbsp;Gm in 2036. == Other websites == * [http://articles.adsabs.h