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

القطر580 km
Depthnot listed
Ageancient large crater
الحالةمؤكدة
Coordinates16.900° N / 28.400° W
Record levelminimal

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

الوصف العلمي

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

معرض إعادة البناء

قراءات بصرية أعمق للفوهة

إذا لم تكفِ الصورة الموثقة، تُستكمل البطاقة بإعادة بناء علمية: ليست خيالاً بدلاً من الحقيقة، بل فرضية بصرية منفصلة بوضوح عن المصادر.

لوحة هذا العالمicy turquoise, deep space, and distant moons
Scientific reconstruction: crater on Iapetus's high-contrast terrain.
المعاينة البصرية الحاليةالبطاقة الأساسية: مصدر أو مادة مدارية أو لوحة تحريرية يبدأ منها التحليل البصري.
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

تحتاج كل بطاقة إلى معاينة بصرية: صورة موجودة، مصدر معالج جمالياً، أو إعادة بناء علمية.

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

تاريخ البحث

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

المصادر

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

حقائق

  • 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