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 — Asteroid in Löwe

19 Fortuna

Asteroid Löwe (Leo) Sichtbar

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

Sternkarte 3D-Sonnensystem + Liste + Plan

Eigenschaften

Helligkeit 10.2

Beschreibung

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).

Position & Bezeichnungen

RA 11h 01m 11.0s

Dec +05° 09' 54.0"

Sternbild Löwe (Leo)

Katalog Fortuna

Wikipedia

Physikalische Eigenschaften

Durchmesser 200 km

Masse 1.0e19 kg

Albedo 0.04 (4% reflected)

Rotation 7.4 hours

Winkeldurchmesser 0.1″ (current)

Bahneigenschaften

Große Halbachse 2.4421 AU (365.3 million km)

Exzentrizität 0.1580

Bahnneigung 1.57°

Umlaufzeit 3.82 years

Entfernung 2.053 AU (17.1 light-min)

Elongation 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.