83 Beatrix

83 Beatrix
Discovery
Discovered by	Annibale de Gasparis
Discovery date	April 26, 1865
Designations
MPC designation	(83) Beatrix
Pronunciation	/ˈbiːətrɪks/[1]
Named after	Beatrice Portinari
Minor planet category	Main belt
Adjectives	Beatrician /biːəˈtrɪʃən/[2]
Orbital characteristics
	Epoch December 31, 2006 (JD 2454100.5)
Aphelion	393.528 Gm (2.631 AU)
Perihelion	334.023 Gm (2.233 AU)
Semi-major axis	363.776 Gm (2.432 AU)
Eccentricity	0.082
Orbital period	1385.035 d (3.79 a)
Average orbital speed	19.07 km/s
Mean anomaly	141.862°
Inclination	4.966°
Longitude of ascending node	27.800°
Argument of perihelion	167.170°
Physical characteristics
Dimensions	81.4 km
Mass	5.6×1017 kg
Geometric albedo	0.092 [3]
Spectral type	X
Absolute magnitude (H)	8.66

Beatrix (minor planet designation: 83 Beatrix) is a fairly large asteroid orbiting in the inner part of the main asteroid belt. It was discovered by Annibale de Gasparis on April 26, 1865. It was his last asteroid discovery. A diameter of at least 68 kilometres (42 mi) was determined from the Beatrician stellar occultation observed on June 15, 1983. It is named for Beatrice Portinari,[4] beloved of Dante Alighieri and immortalized by him in La Vita Nuova and The Divine Comedy.

On February 16, 2001, an occultation of a magnitude +9.09 star by this asteroid was observed from three locations. The resulting chords matched an elliptical profile with a mean radius of 35.9 km. The observers noted some dimming and flickering at the beginning of the event, which may indicate the star was binary or the asteroid has an irregular shape. Previous occultations had been observed in 1983 and 1990, which produced a much larger size estimate of 81.4 km.[5]

References

Noah Webster (1884) A Practical Dictionary of the English Language
"Beatrician". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
Asteroid Data Sets Archived 2009-12-17 at the Wayback Machine
(83) Beatrix In: Dictionary of Minor Planet Names. Springer. 2003. doi:10.1007/978-3-540-29925-7_84. ISBN 978-3-540-29925-7.
Povenmire, H.; Bookamer, R. (September 2001), "The Feb. 16, 2001 Asteroid (83) Beatrix Occultation", Meteoritics & Planetary Science, 36: A166, Bibcode:2001M&PSA..36R.166P.

External links

83 Beatrix at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
83 Beatrix at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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

[2] "Beatrician". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)

[3] Asteroid Data Sets Archived 2009-12-17 at the Wayback Machine

[4] (83) Beatrix In: Dictionary of Minor Planet Names. Springer. 2003. doi:10.1007/978-3-540-29925-7_84. ISBN 978-3-540-29925-7.

[Povenmire2001-5] Povenmire, H.; Bookamer, R. (September 2001), "The Feb. 16, 2001 Asteroid (83) Beatrix Occultation", Meteoritics & Planetary Science, 36: A166, Bibcode:2001M&PSA..36R.166P.