What telescope do I need to see Davida?

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

Davida — Asteroide in Leone

511 Davida

Magnitudine 9.4^m Asteroid Leone (Leo) Visibile

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

Mappa stellare Sistema Solare 3D + Lista + Piano

Proprietà

Magnitudine 9.4

Descrizione

Type: Asteroid

Distance: 3.164 AU

Orbital Period: 2055.3 days

Diameter: 311 km

Named for astronomer David Peck Todd; C-type, seventh-largest main-belt body. Outer-belt orbit keeps it dim despite great size.

Posizione e identificatori

RA 10h 59m 57.0s

Dec +21° 58' 04.5"

Costellazione Leone (Leo)

Catalogo Davida

Wikipedia

Proprietà fisiche

Diametro 311 km

Massa 3.8e19 kg

Albedo 0.05 (5% reflected)

Rotazione 5.1 hours

Dimensione angolare 0.1″ (current)

Proprietà orbitali

Semiasse maggiore 3.1636 AU (473.3 million km)

Eccentricità 0.1896

Inclinazione 15.95°

Periodo orbitale 5.63 years

Distanza 3.210 AU (26.7 light-min)

Elongazione 73.7° Moderate

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.