What telescope do I need to see Eugenia?

At magnitude 10.7, Eugenia is best observed with a 6-inch (150 mm) or larger telescope.

Eugenia — Asteroid in Gemini

45 Eugenia

Asteroid Gemini Visible

Rendered preview of Eugenia from the Nightbase orrery, lit from the current Sun direction with the terminator visible.

Star Map 3D Solar System + List + Plan

Properties

Magnitude 10.7

Description

Type: Asteroid

Distance: 2.722 AU

Orbital Period: 1640.0 days

Diameter: 215 km

Empress Eugénie de Montijo, wife of Napoleon III; F-type triple system with two small moons (Petit-Prince 1998, S/2004 (45) 1).

Position & Identifiers

RA 06h 10m 26.6s

Dec +19° 53' 18.6"

Constellation Gemini

Catalog Eugenia

Wikipedia

Physical Properties

Diameter 215 km

Mass 5.7e18 kg

Albedo 0.04 (4% reflected)

Rotation 5.7 hours

Angular Size 0.1″ (current)

Orbital Properties

Semi-major Axis 2.7216 AU (407.1 million km)

Eccentricity 0.0822

Inclination 6.61°

Orbital Period 4.49 years

Distance 3.336 AU (27.7 light-min)

Elongation 52.7° Moderate

Brightness Forecast (next 12 months)

Apparent magnitude as Earth–asteroid distance changes through the year. The peak marks the brightest moment in the window — usually around opposition, when the asteroid is closest and fully illuminated.

Computed from JPL orbital elements via m = H + 5·log₁₀(r·Δ). Phase-function correction is omitted, so curves trace distance variation only — accurate within a few tenths for main-belt asteroids; coarse for fast-moving NEOs near Earth.