What telescope do I need to see Julia?

At magnitude 9.4, Julia is within reach of a 3-inch (80 mm) telescope from a moderate-Bortle site.

Julia — Asteroide en Aries

89 Julia

Asteroid Aries Visible

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

Mapa Estelar Sistema Solar 3D + Lista + Plan

Propiedades

Magnitud 9.4

Descripción

Type: Asteroid

Distance: 2.551 AU

Orbital Period: 1488.1 days

Diameter: 145 km

Named after Saint Julia of Corsica; S-type; one of the brightest minor planets at opposition (typical mag 9.4).

Posición e Identificadores

RA 02h 40m 48.0s

Dec +27° 13' 35.0"

Constelación Aries

Catálogo Julia

Wikipedia

Propiedades Físicas

Diámetro 145 km

Masa 4.0e18 kg

Albedo 0.19 (19% reflected)

Rotación 11.4 hours

Tamaño angular 0.1″ (current)

Propiedades orbitales

Semieje mayor 2.5508 AU (381.6 million km)

Excentricidad 0.1838

Inclinación 16.12°

Período orbital 4.07 years

Distancia 3.187 AU (26.5 light-min)

Elongación 12.8° Near Sun

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.