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 — Virgo의 소행성

13 Egeria

Asteroid Virgo 관측 가능

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

성도 3D 태양계 + 목록 + 계획

특성

등급 9.4

설명

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.

위치 & 식별자

RA 13h 45m 26.0s

Dec -04° 55' 37.6"

별자리 Virgo

카탈로그 Egeria

Wikipedia

물리적 특성

직경 208 km

질량 1.0e19 kg

알베도 0.08 (8% reflected)

자전 7.0 hours

시직경 0.2″ (current)

궤도 요소

긴반지름 2.5763 AU (385.4 million km)

이심률 0.0847

궤도경사 16.53°

공전주기 4.14 years

거리 1.566 AU (13.0 light-min)

이각 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.

관측 팁

관측 적기 February , March , April

가시성 Telescope

관측 위치 In asteroid belt

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