Satellites›Amateur radio satellites›OSCAR 7 (AO-7)

OSCAR 7 (AO-7)

OSCAR 7 (AO-7) is an amateur radio satellite from the United States, launched on November 15, 1974 from Vandenberg, California, United States. It is in a low orbit, 1,440 to 1,459 km above the ground, and goes around the Earth every 114.9 minutes: 12.5 times a day, at 7.14 km/s (25,700 km/h). The orbit is sun-synchronous: it crosses every place at about the same local time of day.

Where OSCAR 7 (AO-7) is right now

The gold ring is its orbit, and the line drops to the point on the ground under it. Inside the white circle it is above the horizon. Drag the globe to turn it, pinch or use the buttons to come closer; the target button brings you back to the satellite. The 2D map shows its path over the ground for the next lap: gold where it is in sunlight, dashed where it is in Earth’s shadow.

Finding OSCAR 7 (AO-7)…

OSCAR 7 (AO-7)

Finding OSCAR 7 (AO-7)…

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Can you see it?

Without a telescope

Not with the naked eye

It needs binoculars or a telescope: magnitude +10.4 at its best, and the faintest stars the eye can see are about magnitude +6.

From where

It passes straight overhead between latitudes 78° north and 78° south, and it rises above the horizon everywhere on Earth.

A satellite shows only when your sky is dark and it is still in sunlight: in the hours after dusk and before dawn.

When it passes over you

The app works out its passes over your exact location, alerts you before one, and leads you to it with an arrow in the camera view.

Find it with the app

The facts

Catalogue number (NORAD)
7530
International designator
1974-089B
Type
Satellite
Belongs to
United States
Launched
November 15, 1974
Launched from
Vandenberg, California, United States
Status
Partly operational
Orbit
Low Earth orbit, sun-synchronous
Lowest point
1,440 km
Highest point
1,459 km
Tilt to the equator
102.0°
One lap
114.9 minutes
Laps a day
12.54
Speed
7.14 km/s
At its brightest
mag +10.4 estimated, overhead
Standard brightness
mag +9.6 from 1,000 km, half lit
Size on radar
0.8 m²

Orbit measured November 13, 2026, from CelesTrak. Heights are above the ground at the equator. Page updated November 14, 2026.

Quick answers

Where is OSCAR 7 (AO-7) right now?

The map on this page shows where OSCAR 7 (AO-7) is at this moment, the path it will follow over the ground for the next lap, and the part of the Earth it is above the horizon for. It is worked out from the latest tracking data.

How high is OSCAR 7 (AO-7)?

Between 1,440 km at its lowest and 1,459 km at its highest, above the ground.

How fast does OSCAR 7 (AO-7) go?

About 7.14 km/s, which is 25,700 km/h. One lap of the Earth takes it 114.9 minutes, so it goes around 12.5 times a day.

Can you see OSCAR 7 (AO-7) without a telescope?

Not with the naked eye. It needs binoculars or a telescope: magnitude +10.4 at its best, and the faintest stars the eye can see are about magnitude +6.

When was OSCAR 7 (AO-7) launched?

On November 15, 1974, from Vandenberg, California, United States.

The app’s camera view over a city at night, locked on the Hubble Space Telescope

With the app

Knowing where it is over the Earth is one thing. The app shows you where it is in your sky.

This page follows the satellite around the planet. The app works out when it passes over you, and leads you to it.

  • Every pass over your exact location, for this satellite and 10,000+ more.
  • An alert before it rises, so you are outside in time.
  • An arrow in the camera view that leads you to the exact spot in the sky.
  • Starlink trains, Tiangong, Hubble and the brightest satellites of tonight.
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