✨ Caelus • Lunar Eclipse on December 10, 1973

September 09, 2026 17:05:14 UTC+02:00 [48.85° N, 2.35° E]

‹ All eclipses in 1973

Partial Lunar Eclipse

December 10, 1973

Umbra Penumbra Moon

Greatest Eclipse

02:44

01:44 UTC

Duration

4h 12m

first to last penumbral contact

Deepest Phase

1h 8m

Partial phase

Umbral Magnitude

0.101

of the diameter in the umbra

Penumbral Magnitude

1.076

of the diameter in the penumbra

Gamma

0.964

6 151 km north of the axis

🕐 Contacts

Times in Europe/Paris, with UTC underneath.

First penumbral contact (P1)

The Moon touches Earth's penumbra and starts to dim.

00:38

23:38 UTC

PA 128.8°

64.6° alt · 180° az
First umbral contact (U1)

The Moon reaches the umbra and the partial eclipse begins.

02:10

01:10 UTC

PA 161.5°

59.1° alt · 223° az
Greatest eclipse

The Moon's centre is least distant from the axis of Earth's shadow.

02:44

01:44 UTC

PA 0.4°

54.9° alt · 235° az
Fourth umbral contact (U4)

The Moon leaves the umbra and the partial eclipse ends.

03:18

02:18 UTC

PA 199.3°

50.2° alt · 244° az
Last penumbral contact (P4)

The Moon leaves Earth's penumbra and the eclipse ends.

04:50

03:50 UTC

PA 232.0°

36.2° alt · 265° az

The position angle is measured on the Moon's limb from celestial north through east, the convention IMCCE and NASA publish, so these values can be compared with a published table directly.

👁 Visibility

From your location.

The Moon is up from the first to the last contact.

Penumbral phase: Entirely visible
Partial phase: Entirely visible

Moon above the horizon: 00:38 – 04:50

A lunar eclipse happens at the same moment everywhere. All that changes from place to place is whether the Moon is above the horizon.

⏳ Durations

Penumbral phase 4h 12m

Partial phase 1h 8m

🌍 About This Eclipse

A partial lunar eclipse occurs when the Earth passes between the Sun and the Moon, but they are not perfectly aligned. This causes only a portion of the Moon to be covered by the Earth's shadow, resulting in a partial darkening of the Moon's surface.

A lunar eclipse is a geocentric event. The contacts and magnitudes on this page are the same for every observer who can see the Moon at that moment.