1221 Amor

Asteroid and near-Earth object June 2017 yes 1221 Amor 24px (astrological) #FFC2E0 1221 Amor orbit.png Orbital diagram of Amor (cyan) with Earth, Mars and Jupiter (outermost) on 12 March 1932 E. Delporte Uccle Obs. 12 March 1932 (1221) Amor 1932 EA 1 ' æ m ɔrhttp://www.lexico.com/definition/Amor https://web.archive.org/web/20211221095802/https://www.lexico.com/definition/Amor dead 21 December 2021 Amor Lexico UK English Dictionary Oxford University Press Amorian ə ' m ɔər i ə nFrederick Palmer (1923) "The Flaming Woman", Collier's, vol. 71, April 14 Cupid, Roman analogue of Eros(Classical mythology) NEO Amor Amor (II) 23 March 2018 (JD 2458200.5) 0 86.50 yr (31,595 d) 2.7550 AU 1.0832 AU 1.9191 AU 0.4355 2.66 yr (971 d) 102.03° 0.3707 ms / day 11.879° 171.34° 26.656° 0.1069 AU (41.6 LD) 0.857 km (calculated) 1.0 km (est. T. Gehrels) 0.15 (assumed) 0.20 (assumed) S (assumed) 17.6 0.2 17.7 1221 Amor ' æ m ɔr is an asteroid and near-Earth object on an eccentric orbit, approximately 1 km mi off 1 us in diameter. It is the namesake of the Amor asteroids, the second-largest subgroup of near-Earth objects. It was discovered by Eugène Delporte at the Uccle Observatory in 1932, the first time that an asteroid was seen to approach Earth so closely. The assumed S-type asteroid is one of few low-numbered asteroids for which no rotation period has been determined. It was assigned the provisional designation 1932 EA 1 and named for Cupid, also known as "Amor" in Latin, the Roman equivalent of the Greek god Eros. Discovery On 12 March 1932, Belgian astronomer Eugène Delporte photographed Amor at the Royal Observatory of Belgium in Uccle, as it approached Earth to within 16 million kilometers (about 40 times the distance from Earth to the Moon). This was the first time that an asteroid was seen to approach Earth so closely. The body's observation arc begins with its official discovery observation on 12 March 1932, when it was observed at the Uccle and Heidelberg observatories simultaneously. Orbit and classification Amor is the namesake of the Amor asteroid, a subgroup of near-Earth asteroids that approach the orbit of Earth from beyond, but do not cross it. Next to the Apollo group, the Amors are the second largest group of near-Earth objects with more than 7,000 known members. As with many members of this group, Amor is also a Mars-crosser, crossing the orbit of the Red Planet at 1.66 AU. It orbits the Sun at a distance of 1.08–2.76 AU once every 2 years and 8 months (971 days; semi-major axis of 1.92 AU). Its orbit has a high eccentricity of 0.44 and an inclination of 12° with respect to the ecliptic. Close encounters Amor has an Earth minimum orbital intersection distance of 0.1069 AU km on off 3 which corresponds to 41.6 lunar distances. In March 1940, it approached Earth to 0.1052 AU km on off 3, its closest approach of all close encounters since 1900. Only in March 2129, it will approach Earth at a similar distance of 0.1082 AU km on off 3. Naming This minor planet was named after the Roman god of love, Cupid, also known as Amor in Latin, and the Roman equivalent of the Greek god Eros. The near-Earth asteroids 433 Eros and 763 Cupido are also named after the god of love. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 113). Physical characteristics Amor is an assumed, stony S-type asteroid. Rotation period As of 2018, no rotational lightcurve of Amor has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown. Diameter and albedo According to Tom Gehrels publication Hazards due to Comets and Asteroids from 1994 (pp. 540–543), Amor measures 1.0 kilometer in diameter and its surface has an albedo of 0.15. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 0.857 kilometers based on an absolute magnitude of 17.7. References 30em 2018-09-12 last obs. JPL Small-Body Database Browser: 1221 Amor (1932 EA1) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001221;cad=1 Jet Propulsion Laboratory 24 September 2018 Dictionary of Minor Planet Names – (1221) Amor Schmadel Lutz D. Springer Berlin Heidelberg 102 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1222 (1221) Amor 1221 Amor (1932 EA1) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1221 24 September 2018 Asteroid 1221 Amor Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1221+Amor 24 September 2018 https://web.archive.org/web/20180924145613/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1221+Amor 24 September 2018 dead Asteroid (1221) Amor NEODyS-2, Near-Earth object Dynamic Site https://newton.spacedys.com/neodys2/index.php?pc=1.1.0&n=1221 24 September 2018 Discovery Statistics Cumulative Totals NASA/JPL CNEOS https://cneos.jpl.nasa.gov/stats/totals.html 21 September 2018 24 September 2018 1221 24 September 2018 W. Z. Wisniewski T. M. Michalowski A. W. Harris R. S. McMillan April 1997 Photometric Observations of 125 Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1997Icar..126..395W Icarus 126 2 395–449 1997Icar..126..395W 10.1006/icar.1996.5665 24 September 2018 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Dictionary of Minor Planet Names, Google books 1221 1221 Amor 1220 Crocus 1221 1222 Tina 001221 Category:Discoveries by Eugène Joseph Delporte Category:Named minor planets 19320312