What telescope do I need to see Fortuna?

At magnitude 10.2, Fortuna is best observed with a 6-inch (150 mm) or larger telescope.

Fortuna — Asteroide em Leão

19 Fortuna

Asteroid Leão (Leo) Visível

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

Mapa Estelar Sistema Solar 3D + Lista + Plano

Propriedades

Magnitude 10.2

Descrição

Type: Asteroid

Distance: 2.442 AU

Orbital Period: 1393.9 days

Diameter: 200 km

Roman goddess of fortune and luck; G-type; one of the brightest minor planets at opposition (typical mag 10.2).

Posição e Identificadores

RA 11h 01m 11.0s

Dec +05° 09' 54.0"

Constelação Leão (Leo)

Catálogo Fortuna

Wikipedia

Propriedades Físicas

Diâmetro 200 km

Massa 1.0e19 kg

Albedo 0.04 (4% reflected)

Rotação 7.4 hours

Tamanho angular 0.1″ (current)

Propriedades orbitais

Semieixo maior 2.4421 AU (365.3 million km)

Excentricidade 0.1580

Inclinação 1.57°

Período orbital 3.82 years

Distância 2.053 AU (17.1 light-min)

Elongação 124.5° 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.