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 en León

19 Fortuna

Asteroid León (Leo) Visible

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

Mapa Estelar Sistema Solar 3D + Lista + Plan

Propiedades

Magnitud 10.2

Descripción

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).

Posición e Identificadores

RA 11h 01m 11.0s

Dec +05° 09' 54.0"

Constelación León (Leo)

Catálogo Fortuna

Wikipedia

Propiedades Físicas

Diámetro 200 km

Masa 1.0e19 kg

Albedo 0.04 (4% reflected)

Rotación 7.4 hours

Tamaño angular 0.1″ (current)

Propiedades orbitales

Semieje mayor 2.4421 AU (365.3 million km)

Excentricidad 0.1580

Inclinación 1.57°

Período orbital 3.82 years

Distancia 2.053 AU (17.1 light-min)

Elongación 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.