What telescope do I need to see Euphrosyne?

At magnitude 10.6, Euphrosyne is best observed with a 6-inch (150 mm) or larger telescope.

Euphrosyne — Asteroid in Sagittarius

31 Euphrosyne

Asteroid Sagittarius Visible

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

Star Map 3D Solar System + List + Plan

Properties

Magnitude 10.6

Description

Type: Asteroid

Distance: 3.162 AU

Orbital Period: 2053.2 days

Diameter: 268 km

Greek goddess of mirth; C-type with very dark surface. Highly inclined orbit (26°) keeps it well off the ecliptic. Parent of the Euphrosyne family.

Position & Identifiers

RA 19h 04m 51.3s

Dec -49° 03' 11.3"

Constellation Sagittarius

Catalog Euphrosyne

Wikipedia

Physical Properties

Diameter 268 km

Mass 1.7e19 kg

Albedo 0.05 (5% reflected)

Rotation 5.5 hours

Angular Size 0.1″ (current)

Orbital Properties

Semi-major Axis 3.1615 AU (473.0 million km)

Eccentricity 0.2159

Inclination 26.31°

Orbital Period 5.62 years

Distance 3.309 AU (27.5 light-min)

Elongation 114.9° Good

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.

Observing Tips

Best Months April , May , June

Visibility Telescope

Where to Look In asteroid belt

Notes Greek goddess of mirth; C-type with very dark surface. Highly inclined orbit (26°) keeps it well off the ecliptic. Parent of the Euphrosyne family.