45 Eugenia information

45 Eugenia
Discovery
Discovered by	H. Goldschmidt
Discovery date	27 June 1857
Designations
MPC designation	(45) Eugenia
Pronunciation	/juːˈdʒiːniə/
Named after	Empress Eugénie
Alternative designations	1941 BN
Minor planet category	Main belt
Adjectives	Eugenian
Orbital characteristics
	Epoch 26 November 2005 (JD 2453701.5)
Aphelion	440.305 Gm (2.943 AU)
Perihelion	373.488 Gm (2.497 AU)
Semi-major axis	406.897 Gm (2.720 AU)
Eccentricity	0.082
Orbital period (sidereal)	1638.462 d (4.49 a)
Mean anomaly	45.254°
Inclination	6.610°
Longitude of ascending node	147.939°
Argument of perihelion	85.137°
Known satellites	Petit-Prince; S/2004 (45) 1
Physical characteristics
Dimensions	232 × 193 × 161 km; 305 × 220 × 145 km
Mean radius	94±1 km; 107.3±2.1 km
Mass	(5.8±0.1)×1018 kg ; (5.69±0.1)×1018 kg; (5.8±0.2)×1018 kg
Mean density	1.66±0.07 g/cm3; 1.1±0.1 g/cm3; 1.1±0.3 g/cm3
Equatorial surface gravity	0.017 m/s²
Equatorial escape velocity	0.071 km/s
Sidereal rotation period	0.2375 d (5.699 h)
Axial tilt	117±10°
Pole ecliptic latitude	−30±10°
Pole ecliptic longitude	124±10°
Geometric albedo	0.065 (calculated); 0.040±0.002
Spectral type	F
Absolute magnitude (H)	7.46

Eugenia (minor planet designation: 45 Eugenia) is a large asteroid of the asteroid belt. It is famed as one of the first asteroids to be found to have a moon orbiting it. It was also the second triple asteroid to be discovered, after 87 Sylvia.

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

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[VLT-7] P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56

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45 Eugenia information

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45 Eugenia

45

Eugenia

Binary asteroid

Petit Prince

List of Solar System objects by size

List of exceptional asteroids

Pluto

List of minor planets named after people

Minor planet

90 Antiope

Naming of moons

Eugenia pyriformis

Eugenia Raskopoulos

253 Mathilde

Franck Marchis

46 Hestia

Hermann Goldschmidt

44 Nysa

Out of Frequency

107 Camilla

Eugenia calycina