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 — Asteroid in Gemini

87 Sylvia

Asteroid Gemini Sichtbar

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

Sternkarte 3D-Sonnensystem + Liste + Plan

Eigenschaften

Helligkeit 11.0

Beschreibung

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.

Position & Bezeichnungen

RA 06h 16m 21.0s

Dec +28° 42' 01.9"

Sternbild Gemini

Katalog Sylvia

Wikipedia

Physikalische Eigenschaften

Durchmesser 261 km

Masse 1.5e19 kg

Albedo 0.05 (5% reflected)

Rotation 5.2 hours

Winkeldurchmesser 0.1″ (current)

Bahneigenschaften

Große Halbachse 3.4845 AU (521.3 million km)

Exzentrizität 0.0943

Bahnneigung 10.87°

Umlaufzeit 6.50 years

Entfernung 4.168 AU (34.7 light-min)

Elongation 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.

Beobachtungstipps

Beste Monate August , September , October

Sichtbarkeit Telescope

Wo zu finden In asteroid belt

Hinweise 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.