What telescope do I need to see Egeria?

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

Egeria — Asteroide en Virgo

13 Egeria

Asteroid Virgo Visible

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

Mapa Estelar Sistema Solar 3D + Lista + Plan

Propiedades

Magnitud 9.4

Descripción

Type: Asteroid

Distance: 2.576 AU

Orbital Period: 1510.4 days

Diameter: 208 km

Greek water nymph; G-type (carbonaceous subgroup) — dark, damp surface thought to contain hydrated minerals. One of the brightest C-complex asteroids.

Posición e Identificadores

RA 13h 45m 26.0s

Dec -04° 55' 37.6"

Constelación Virgo

Catálogo Egeria

Wikipedia

Propiedades Físicas

Diámetro 208 km

Masa 1.0e19 kg

Albedo 0.08 (8% reflected)

Rotación 7.0 hours

Tamaño angular 0.2″ (current)

Propiedades orbitales

Semieje mayor 2.5763 AU (385.4 million km)

Excentricidad 0.0847

Inclinación 16.53°

Período orbital 4.14 years

Distancia 1.566 AU (13.0 light-min)

Elongación 165.3° Near opposition

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.

Consejos de Observación

Mejores meses February , March , April

Visibilidad Telescope

Dónde buscar In asteroid belt

Notas Greek water nymph; G-type (carbonaceous subgroup) — dark, damp surface thought to contain hydrated minerals. One of the brightest C-complex asteroids.