52 Europa

52 Europa
Discovery
Discovered by	H. Goldschmidt
Discovery date	4 February 1858
Designations
MPC designation	(52) Europa
Pronunciation	/jʊˈroʊpə/
Named after	Europa
Alternative designations	1948 LA
Minor planet category	Main belt
Adjectives	Europan, Europian
Orbital characteristics
	Epoch July 01, 2021 ; (JD 2459396.5, heliocentric)
Aphelion	3.444 AU (510 Gm)
Perihelion	2.75 AU (420 Gm)
Semi-major axis	3.095 AU (460 Gm)
Eccentricity	0.111
Orbital period (sidereal)	5.45 yr (1989 d)
Mean anomaly	21°
Inclination	7.48°
Longitude of ascending node	129°
Argument of perihelion	343°
Physical characteristics
Dimensions	c/a = 0.67±0.04; (379±16)×(330±8)×(249±10) km
Mean diameter	319±4 km; 315±7 km
Mass	(24±4)×1018 kg; (22.6±1.6)×1018 kg
Mean density	1.41±0.23 g/cm3; 1.5±0.4 g/cm3
Synodic rotation period	5.63 h
Geometric albedo	0.057±0.007 geometric (0.679±0.017 BV, 0.338±0.028 UB)
Temperature	~173 K; max: 258K (−15 °C)
Spectral type	C/CF
Absolute magnitude (H)	6.48

Europa (minor planet designation: 52 Europa) is the 6th-largest asteroid in the asteroid belt, having a diameter of over 300 km, though it is not correspondingly massive. It is not round but is shaped like an ellipsoid of approximately 380×330×250 km.^[4] It was discovered on 4 February 1858, by Hermann Goldschmidt from his balcony in Paris. It is named after Europa, one of Zeus's conquests in Greek mythology, a name it shares with Jupiter's moon Europa.

^ Noah Webster (1884) A Practical Dictionary of the English Language
^ ^a ^b ^c ^d ^e JPL data Retrieved 2021-09-29
^ ^a ^b ^c ^d P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56
^ ^a ^b ^c ^d Merline, W.J. (2013). "The Resolved Asteroid Program – Size, shape, and pole of (52) Europa". Icarus. 225 (1): 794–805. arXiv:1301.5101. Bibcode:2013Icar..225..794M. doi:10.1016/j.icarus.2013.01.010. S2CID 119286695.
^ James Baer, Steven Chesley & Robert Matson (2011) "Astrometric masses of 26 asteroids and observations on asteroid porosity." The Astronomical Journal, Volume 141, Number 5
^ Dotto, E.; Müller, T. G.; Barucci, M. A.; Encrenaz, Th.; Knacke, R. F.; Lellouch, E.; Doressoundiram, A.; Crovisier, J.; Brucato, J. R.; Colangeli, L.; Mennella, V. (2000). "ISO results on bright Main Belt asteroids: PHT-S observations". Astronomy and Astrophysics. 358: 1134. Bibcode:2000A&A...358.1133D. Retrieved 23 February 2024.

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[1] Noah Webster (1884) A Practical Dictionary of the English Language

[JPL-2] JPL data Retrieved 2021-09-29

[VLT-3] P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56

[Merline-4] Merline, W.J. (2013). "The Resolved Asteroid Program – Size, shape, and pole of (52) Europa". Icarus. 225 (1): 794–805. arXiv:1301.5101. Bibcode:2013Icar..225..794M. doi:10.1016/j.icarus.2013.01.010. S2CID 119286695.

[Baer2011-6] James Baer, Steven Chesley & Robert Matson (2011) "Astrometric masses of 26 asteroids and observations on asteroid porosity." The Astronomical Journal, Volume 141, Number 5

[7] Dotto, E.; Müller, T. G.; Barucci, M. A.; Encrenaz, Th.; Knacke, R. F.; Lellouch, E.; Doressoundiram, A.; Crovisier, J.; Brucato, J. R.; Colangeli, L.; Mennella, V. (2000). "ISO results on bright Main Belt asteroids: PHT-S observations". Astronomy and Astrophysics. 358: 1134. Bibcode:2000A&A...358.1133D. Retrieved 23 February 2024.

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