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 em Aries

89 Julia

Asteroid Aries Visível

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

Mapa Estelar Sistema Solar 3D + Lista + Plano

Propriedades

Magnitude 9.4

Descrição

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).

Posição e Identificadores

RA 02h 40m 47.5s

Dec +27° 13' 32.9"

Constelação Aries

Catálogo Julia

Wikipedia

Propriedades Físicas

Diâmetro 145 km

Massa 4.0e18 kg

Albedo 0.19 (19% reflected)

Rotação 11.4 hours

Tamanho angular 0.1″ (current)

Propriedades orbitais

Semieixo maior 2.5508 AU (381.6 million km)

Excentricidade 0.1838

Inclinação 16.12°

Período orbital 4.07 years

Distância 3.187 AU (26.5 light-min)

Elongação 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.