36 Atalante

36 Atalante
	Three-dimensional model of 36 Atalante created based on light-curve
Discovery
Discovered by	H. Goldschmidt
Discovery date	October 5, 1855
Designations
Designation	(36) Atalante
Pronunciation	/ætəˈlæntə, -tiː/
Named after	Atalanta
Alternative names	A901 SB; A912 HC; Atalanta
Minor planet category	Main belt
Adjectives	Atalantean /ˌætəlænˈtiːən/
Orbital characteristics
	Epoch December 31, 2006 (JD 2454100.5)
Aphelion	535.625 Gm (3.580 AU)
Perihelion	286.217 Gm (1.913 AU)
Semi-major axis	410.921 Gm (2.747 AU)
Eccentricity	0.303
Orbital period (sidereal)	1662.831 d (4.55 a)
Average orbital speed	17.55 km/s
Mean anomaly	47.005°
Inclination	18.432°
Longitude of ascending node	358.472°
Argument of perihelion	47.132°
Physical characteristics
Mean diameter	132.842 ± 29.191 km; 110.14 ± 4.38 km
Mass	(9.57 ± 4.32/3.15)×1017 kg
Mean density	1.672 ± 0.755/0.551 g/cm3
Surface gravity	~0.0241 m/s²
Escape velocity	~0.0498 km/s
Synodic rotation period	0.414 d (9.93 h)
Albedo	0.029
Temperature	~170 K
Spectral type	C
Absolute magnitude (H)	8.59

Atalante (minor planet designation: 36 Atalante) is a large, dark main-belt asteroid. It was discovered by the German-French astronomer H. Goldschmidt on October 5, 1855, and named by French mathematician Urbain Le Verrier after the Greek mythological heroine Atalanta (of which Atalante is the French and German form, pronounced nearly the same as 'Atalanta' in English).^[7] It was rendered 'Atalanta' in English sources in the 19th century.^[3] This asteroid is classified as C-type (carbonaceous), according to the Tholen classification system.^[1]

Observation of the asteroid light curve indicates it is rotating with a period of 9.93 ± 0.01 hours. During this interval, the magnitude varies by an amplitude of 0.12 ± 0.02.^[8] By combining the results of multiple light curves, the approximate ellipsoidal shape of the object can be estimated. It appears to be slightly elongated, being about 28.2% longer along one axis compared to the other two.^[9] Atalante was observed by Arecibo radar in October 2010.^[10]^[11]

This asteroid shares a mean-motion resonance with the planets Jupiter and Saturn. The computed Lyapunov time for this asteroid is only 4,000 years, indicating that it occupies a highly chaotic orbit that will change randomly over time because of gravitational perturbations of the planets. This is the shortest Lyapunov time of the first 100 named asteroids.^[12]

Notes[edit]

^ The pronunciation given for 'Atalante' is for the Greek Ἀταλάντη; however, the name of the asteroid is the German form of the Latin Atalanta, with the German final -e being a schwa much like an English final -a – and indeed, 'Atalanta' is given as the English form in Craig (1869).^[3]
^ Assuming a diameter of 103 ± 11.451 km.

References[edit]

^ ^a ^b ^c ^d ^e ^f ^g "JPL Small-Body Database Browser: 36 Atalante" (2011-12-30 last obs). Jet Propulsion Laboratory. Retrieved 23 January 2012.
^ 'Atalanta, Atalante' in The Century Dictionary and Cyclopedia.
^ ^a ^b ^c John Craig (1869) The Universal English Dictionary
^ E.g. John Milton (1749) Paradise Lost
^ Carry, 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.
^ ^a ^b Fienga, A.; Avdellidou, C.; Hanuš, J. (February 2020). "Asteroid masses obtained with INPOP planetary ephemerides". Monthly Notices of the Royal Astronomical Society. 492 (1). doi:10.1093/mnras/stz3407.
^ Schmadel, Lutz D.; International Astronomical Union (2003), Dictionary of minor planet names, Physics and astronomy online library, vol. 1 (5th ed.), Springer, p. 18, ISBN 3-540-00238-3
^ Brinsfield, James W. (September 2007), "The Rotation Periods of 36 Atalante and 416 Vaticana", The Minor Planet Bulletin, 34 (3): 58–59, Bibcode:2007MPBu...34...58B
^ Blanco, C.; Riccioli, D. (September 1998), "Pole coordinates and shape of 30 asteroids", Astronomy and Astrophysics Supplement, 131 (3): 385–394, Bibcode:1998A&AS..131..385B, doi:10.1051/aas:1998277
^ Mike Nolan (18 January 2012). "Scheduled Arecibo Radar Asteroid Observations". Planetary Radar at Arecibo Observatory. Retrieved 23 January 2012.
^ "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 23 January 2012.
^ Šidlichovský, M. (1999), Svoren, J.; Pittich, E. M.; Rickman, H. (eds.), "Resonances and chaos in the asteroid belt", Evolution and source regions of asteroids and comets : proceedings of the 173rd colloquium of the International Astronomical Union, held in Tatranska Lomnica, Slovak Republic, August 24–28, 1998, pp. 297–308, Bibcode:1999esra.conf..297S.

External links[edit]

Lightcurve plot of 36 Atalante, Palmer Divide Observatory, B. D. Warner (2007)
Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
36 Atalante at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
36 Atalante at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

[4] The pronunciation given for 'Atalante' is for the Greek Ἀταλάντη; however, the name of the asteroid is the German form of the Latin Atalanta, with the German final -e being a schwa much like an English final -a – and indeed, 'Atalanta' is given as the English form in Craig (1869).^[3]

[8] Assuming a diameter of 103 ± 11.451 km.

[jpldata-1] ^ ^a ^b ^c ^d ^e ^f ^g "JPL Small-Body Database Browser: 36 Atalante" (2011-12-30 last obs). Jet Propulsion Laboratory. Retrieved 23 January 2012.

[2] 'Atalanta, Atalante' in The Century Dictionary and Cyclopedia.

[Craig-3] John Craig (1869) The Universal English Dictionary

[5] E.g. John Milton (1749) Paradise Lost

[Carry2012-6] Carry, 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.

[FiengaEtAl2020-7] Fienga, A.; Avdellidou, C.; Hanuš, J. (February 2020). "Asteroid masses obtained with INPOP planetary ephemerides". Monthly Notices of the Royal Astronomical Society. 492 (1). doi:10.1093/mnras/stz3407.

[schmadel2003-9] Schmadel, Lutz D.; International Astronomical Union (2003), Dictionary of minor planet names, Physics and astronomy online library, vol. 1 (5th ed.), Springer, p. 18, ISBN 3-540-00238-3

[mpb34_3_58-10] Brinsfield, James W. (September 2007), "The Rotation Periods of 36 Atalante and 416 Vaticana", The Minor Planet Bulletin, 34 (3): 58–59, Bibcode:2007MPBu...34...58B

[aaas131_385-11] Blanco, C.; Riccioli, D. (September 1998), "Pole coordinates and shape of 30 asteroids", Astronomy and Astrophysics Supplement, 131 (3): 385–394, Bibcode:1998A&AS..131..385B, doi:10.1051/aas:1998277

[Arecibo-12] Mike Nolan (18 January 2012). "Scheduled Arecibo Radar Asteroid Observations". Planetary Radar at Arecibo Observatory. Retrieved 23 January 2012.

[detected-13] "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 23 January 2012.

[Sidlichovsky-14] Šidlichovský, M. (1999), Svoren, J.; Pittich, E. M.; Rickman, H. (eds.), "Resonances and chaos in the asteroid belt", Evolution and source regions of asteroids and comets : proceedings of the 173rd colloquium of the International Astronomical Union, held in Tatranska Lomnica, Slovak Republic, August 24–28, 1998, pp. 297–308, Bibcode:1999esra.conf..297S.

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