What telescope do I need to see Sylvia?

At magnitude 11.0, Sylvia is best observed with a 6-inch (150 mm) or larger telescope.

Sylvia — Asteroide en Gemini

87 Sylvia

Asteroid Gemini Visible

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

Mapa Estelar Sistema Solar 3D + Lista + Plan

Propiedades

Magnitud 11.0

Descripción

Type: Asteroid

Distance: 3.485 AU

Orbital Period: 2375.8 days

Diameter: 261 km

X/P-type triple system — orbited by two small moons, Romulus (2001) and Remus (2004). Outer-belt orbit at 3.48 AU; very dark, reddish surface.

Posición e Identificadores

RA 06h 16m 21.0s

Dec +28° 42' 01.9"

Constelación Gemini

Catálogo Sylvia

Wikipedia

Propiedades Físicas

Diámetro 261 km

Masa 1.5e19 kg

Albedo 0.05 (5% reflected)

Rotación 5.2 hours

Tamaño angular 0.1″ (current)

Propiedades orbitales

Semieje mayor 3.4845 AU (521.3 million km)

Excentricidad 0.0943

Inclinación 10.87°

Período orbital 6.50 years

Distancia 4.168 AU (34.7 light-min)

Elongación 53.9° 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.