What telescope do I need to see Interamnia?

At magnitude 9.5, Interamnia is within reach of a 3-inch (80 mm) telescope from a moderate-Bortle site.

Interamnia — Astéroïde dans Libra

704 Interamnia

Asteroid Libra Visible

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

Carte du Ciel Système Solaire 3D + Liste + Plan

Propriétés

Magnitude 9.5

Description

Type: Asteroid

Distance: 3.056 AU

Orbital Period: 1951.5 days

Diameter: 332 km

Latin name for Teramo, Italy; F-type; sixth-largest main-belt body, comparable in mass to Pallas.

Position et Identifiants

RA 14h 03m 20.2s

Dec -34° 56' 33.7"

Constellation Libra

Catalogue Interamnia

Wikipedia

Propriétés Physiques

Diamètre 332 km

Masse 3.5e19 kg

Albédo 0.08 (8% reflected)

Rotation 8.7 hours

Taille angulaire 0.2″ (current)

Propriétés orbitales

Demi-grand axe 3.0562 AU (457.2 million km)

Excentricité 0.1552

Inclinaison 17.32°

Période orbitale 5.34 years

Distance 2.511 AU (20.9 light-min)

Élongation 159.0° Near opposition

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.