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Palomar Transient Factory

astronomical survey program
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Summary

Palomar Transient Factory is an astronomical survey[1]. It draws 122 Wikipedia views per month (astronomical survey category, ranking #22 of 60).[2]

Key Facts

  • Item operated: Palomar Observatory[3]
  • Start time: March 2009[4]
  • End time: December 2012[5]
  • Official website: https://www.ptf.caltech.edu/page/ptf_about[6]

Why It Matters

Palomar Transient Factory is known by 4 alternative names across languages and contexts.[7]

References

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

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . ptf.caltech.edu. ptf.caltech.edu. Provenance: wikidata.org.
  3. [5] ↑ . ptf.caltech.edu. ptf.caltech.edu. Provenance: wikidata.org.
  4. [6] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [7] ↑ . Wikidata aliases. 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). Palomar Transient Factory. Retrieved October 26, 2026, from https://4ort.xyz/entity/palomar-transient-factory
MLA “Palomar Transient Factory.” 4ort.xyz Knowledge Graph, 4ort.xyz, 26 Oct. 2026, https://4ort.xyz/entity/palomar-transient-factory.
BibTeX @misc{4ortxyz_palomar-transient-factory_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Palomar Transient Factory}}, year = {2026}, url = {https://4ort.xyz/entity/palomar-transient-factory}, note = {Accessed: 2026-10-26}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Palomar Transient Factory — https://4ort.xyz/entity/palomar-transient-factory (retrieved 2026-10-26)

Canonical URL: https://4ort.xyz/entity/palomar-transient-factory · Last refreshed:

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. 13d ago · Huntster · 2026-10-13 view diff on Wikidata ↗
    Start time → +2009-03-00T00:00:00Z
    Freebase id → /m/09v2689
    Wikipedia languages → ['ca', 'en', 'fr', 'it', 'ja', 'zh']
    Instance of → astronomical survey
    + 7 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update:2||1 */ Start time: March 2009"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.