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 — Asteroide in Libra

704 Interamnia

Asteroid Libra Visibile

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

Mappa stellare Sistema Solare 3D + Lista + Piano

Proprietà

Magnitudine 9.5

Descrizione

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.

Posizione e identificatori

RA 14h 03m 20.2s

Dec -34° 56' 33.8"

Costellazione Libra

Catalogo Interamnia

Wikipedia

Proprietà fisiche

Diametro 332 km

Massa 3.5e19 kg

Albedo 0.08 (8% reflected)

Rotazione 8.7 hours

Dimensione angolare 0.2″ (current)

Proprietà orbitali

Semiasse maggiore 3.0562 AU (457.2 million km)

Eccentricità 0.1552

Inclinazione 17.32°

Periodo orbitale 5.34 years

Distanza 2.511 AU (20.9 light-min)

Elongazione 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.