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Iapetus

moon of Saturn
Thing Moon Of Saturn Q17958
Iapetus
NASA / JPL / Space Science Institute · Public Domain · Wikimedia

Facts

18 properties
Instance of
moon of Saturn, regular moon[3]
Albedo
+0.6[19]
Apoapsis
+3659387[17]
Apparent magnitude
+10.2[8]
Density
+1.088[12]
Described by source
Yuzhakov Big Encyclopedia[9]
Discoverer or inventor
Giovanni Domenico Cassini[2]
Mass
+1.8055[13]
Named after
Iapetos[4]
Orbital eccentricity
+0.0286125[7]
Orbital inclination
+17.28[11]
Orbital period
+79.3215[15]
Parent astronomical body
Saturn[5]
Periapsis
+3462252[18]
Radius
+734.5[14]
Semi-major axis of an orbit
+3560820[16]
Time of discovery or invention
October 25, 1671[6]
Topic has template
Template:GeoTemplate/iapetus[10]
🏷️ Also known as
en Iapetus en Japetus en Saturn VIII ar إيابيتوس el Ιαπετός el Κρόνος VIII es Saturn VIII es Jápeto fa یاپتوس fr Japet he יאפטוס hi आऐपिटस id Japetus id Saturn VIII it Giapeto it Saturno VIII ja イアペタス ja イアペトゥス ja イアペトゥス (衛星) ja ヤペタス
🔖 Identifiers · 24
Library of Congress Authorities ID
sh2010014157
GND ID
4276696-5
A Dictionary of Geology and Earth Sciences entry ID
4101
BabelNet ID
00148995n
Bing entity ID
e620db95-2ed0-41f2-e711-03d6a8aab390
Encyclopedia of Science Fiction ID
iapetus
Encyclopædia Britannica Online ID
topic/Iapetus-astronomy
Fandom article ID
thesolarsystem:Iapetus
Freebase ID
/m/0p_xs
Getty Thesaurus of Geographic Names ID
7031564
Gran Enciclopèdia Catalana ID
japet
Gran Enciclopèdia Catalana ID (former scheme)
0034338
Show all 24 identifiers +12
Hrvatska enciklopedija ID
68424
J9U entity ID
987007568118505171
KBpedia ID
Iapetus-TheTitan
Lex ID
Iapetus
NAIF ID
608
NE.se ID
japetus
NL CR AUT ID
ph632740
Namuwiki ID
이아페투스
Quora topic ID
Iapetus
Topic's main category
Category:Iapetus (moon)
Vikidia article ID
fr:Japet_(satellite)
Wolfram Language entity code
Entity["PlanetaryMoon", "Iapetus"]

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
← Located on astronomical body 6
Cassini Regio, Roncevaux Terra, Saragossa Terra, Turgis, Gerin, Engelier
Instance of 2
moon of Saturn, regular moon
Category for maps or plans 1
Category:Surface features of Iapetus (moon)
Discoverer or inventor 1
Giovanni Domenico Cassini
Named after 1
Iapetos
Named after 1
Iapetus Nunatak
Parent astronomical body 1
Saturn
Topic's main category 1
Category:Iapetus (moon)
← Category's main topic 1
Category:Iapetus (moon)
← Child astronomical body 1
Saturn
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Summary

Iapetus is a moon of Saturn[1].

Body

Influence

Things named for Iapetus include Iapetus Nunatak[20], a nunatak[21].

Why It Matters

Entities named for Iapetus include Iapetus Nunatak[20], a nunatak[21].

Related Entities

Giovanni Domenico Cassini

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [2] ↑ . A Short History of Astronomy. wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . ssd.jpl.nasa.gov. Retrieved . ssd.jpl.nasa.gov. Provenance: wikidata.org.
  13. [14] ↑ . Cartographic Mapping of the Icy Satellites Using ISS and VIMS Data. wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . wikidata.org.
  17. [18] ↑ . wikidata.org.
  18. [19] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [20] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [21] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Iapetus. Retrieved November 10, 2026, from https://4ort.xyz/entity/iapetus-q17958
MLA “Iapetus.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Nov. 2026, https://4ort.xyz/entity/iapetus-q17958.
BibTeX @misc{4ortxyz_iapetus-q17958_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Iapetus}}, year = {2026}, url = {https://4ort.xyz/entity/iapetus-q17958}, note = {Accessed: 2026-11-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Iapetus — https://4ort.xyz/entity/iapetus-q17958 (retrieved 2026-11-10)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 17d ago · ~2026-54193-84 · 2026-10-23 view diff on Wikidata ↗
    Size comparison diagram → Iapetus, Earth, Moon size comparison.jpg
    "Created claim: Size comparison diagram: Iapetus, Earth, Moon size comparison.jpg"
  2. 19d ago · BorkedBot bot · 2026-10-22 view diff on Wikidata ↗
    "Added qualifier: Subject named as: Iapetus, update metadata from fandom API (details)"
  3. 6w ago · Printstream · 2026-09-27 view diff on Wikidata ↗
    GND ID → 4276696-5
    "Changed the item: QuickStatements 3.0 batch #56529: Import GNDs from dewiki"
  4. 6w ago · ~2026-50558-89 · 2026-09-25 view diff on Wikidata ↗
    Fandom article ID → thesolarsystem:Iapetus
    "Created claim: Fandom article ID: thesolarsystem:Iapetus"
  5. 17w ago · RVA2869 · 2026-07-13 view diff on Wikidata ↗
    Named after → Iapetos
    Albedo → 0.6
    Orbital period → 79.3215 day
    Topic's main category → Category:Iapetus (moon)
    + 15 other properties edited (see Wikidata diff for full list)
    "Changed labels, descriptions, aliases and claims: Cleanup: remove wikimedia+self_stated_in refs; replace property; add mul alias (Difool/WikidataCleanup)"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.