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 em Virgo

13 Egeria

Magnitude 9.4^m Asteroid Virgo Visível

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

Mapa Estelar Sistema Solar 3D + Lista + Plano

Propriedades

Magnitude 9.4

Descrição

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.

Posição e Identificadores

RA 13h 21m 17.3s

Dec -08° 08' 11.6"

Constelação Virgo

Catálogo Egeria

Wikipedia

Propriedades Físicas

Diâmetro 208 km

Massa 1.0e19 kg

Albedo 0.08 (8% reflected)

Rotação 7.0 hours

Tamanho angular 0.1″ (current)

Propriedades orbitais

Semieixo maior 2.5763 AU (385.4 million km)

Excentricidade 0.0847

Inclinação 16.53°

Período orbital 4.14 years

Distância 1.967 AU (16.4 light-min)

Elongação 117.3° 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.

Dicas de Observação

Melhores meses February , March , April

Visibilidade Telescope

Onde procurar 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.