Why it matters

Turgis helps move the Saturn branch beyond Mimas and show the diversity of icy moons.

What happenedA large crater on Iapetus, interesting against the moon's strong contrast between bright and dark terrains.
Why it mattersTurgis helps move the Saturn branch beyond Mimas and show the diversity of icy moons.
How scientists knowGazetteer of Planetary Nomenclature; NASA Image and Video Library

Measurements and uncertainty

直径580 km
Depthnot listed
Ageancient large crater
状态已确认
Coordinates16.900° N / 28.400° W
Record levelminimal

Seed record: coordinates and diameter support navigation, while geology, age, and visual rights need enrichment.

科学档案

The profile fixes the scientific baseline: size, position, and the need for a future visual layer based on Cassini data.

Data provenanceGazetteer of Planetary Nomenclature; NASA Image and Video Library

重建图廊

更多陨石坑视觉解读

如果已验证图像不足，档案会补充科学重建：不是用幻想替代事实，而是与来源清晰区分的视觉假设。

世界调色icy turquoise, deep space, and distant moons
Scientific reconstruction: crater on Iapetus's high-contrast terrain.
当前视觉预览基础图版：来源图像、轨道资料或编辑图版，视觉解读从这里开始。
Reverse reconstructionmoving from the present trace back to the impact event
Chronological inversionreading the object from future state back through earlier layers
The present as an archive of the futuretreating today's profile as evidence for future analysis

Visual reconstruction

Reverse reconstruction → Chronological inversion → Bidirectional analysis → The present as an archive of the future

每张档案都需要视觉预览：现有图像、经过美学处理的来源，或科学重建图。

Reverse reconstructionmoving from the present trace back to the impact event
Chronological inversionreading the object from future state back through earlier layers
Bidirectional analysischecking past-to-present and present-to-past interpretations
The present as an archive of the futuretreating today's profile as evidence for future analysis

研究历史

The name was adopted by the IAU in 2008 and refers to a character from the Song of Roland.

来源

CSVJSONTurgis on Iapetus. Crater.world record. Last reviewed 2026-05-08.
Last reviewed
2026-05-08
Source baseline
Gazetteer of Planetary Nomenclature; NASA Image and Video Library
Uncertainty note
Seed record: coordinates and diameter support navigation, while geology, age, and visual rights need enrichment.
Gazetteer of Planetary NomenclatureInternational Astronomical Union / USGSNASA Image and Video LibraryNASA

Education mode

事实

  • Official diameter: about 580 km.
  • Iapetus is famous for its bright-dark surface contrast.
  • The object fits future Cassini-based comparison features.
Glossaryejecta, impact melt, breccia, central peak, erosion
Classroom questionWhich evidence separates an impact crater from a volcanic caldera?
CompareOccator