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Solar
Moon

Callisto

Orbits Jupiter Wikipedia ↗

Where is it now

Distance from Sun
5.307 AU
True anomaly
116.89°
Distance from Earth
5.894 AU
As of
2 October 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 1.001 AU from the Sun Earth Jupiter — 5.307 AU from the Sun Jupiter
Callisto is shown at its parent, Jupiter. Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Jupiter is 5.894 AU from Earth today (49.0 light-minutes).

In the sky

Right ascension
09h 29m 06s
Declination
+15° 29′ 33″
Constellation
Leo
Distance from Earth
5.89 AU
Elongation from the Sun
50.62° — near the Sun — look low at dusk or dawn

Favours the northern hemisphere; low or below the horizon from far south.

Shown at its parent's position — a moon sits within a fraction of a degree of its planet.

From your location

See how high it is right now, whether it's up after dark, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
0.013 AU
Eccentricity
0.0074
Inclination
0.19°
Orbital period
16.7 days
Perihelion
0.012 AU
Aphelion
0.013 AU
Longitude of ascending node
309.1°
Argument of periapsis
43.8°
Epoch · J2000
J2000

Physical properties

Mean radius
2,410 km
Mass
1.076 × 10²³ kg
Density
1.834 g/cm³
Rotation period
16.69 days
Axial tilt
0.4°
Surface gravity
1.24 m/s²
GM
7,179.283 km³/s²

Visual & observation

Geometric albedo
0.22
Representative colour
#5C4F40

Discovery & classification

Discovered by
Galileo Galilei
Discovery date
7 January 1610

Sources