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UBV photometric system

wide-band photometric system used in astronomy
Thing photometric_system Q129833
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UBV photometric system

Summary

UBV photometric system is a photometric system[1]. It draws 214 Wikipedia views per month (photometric_system category, ranking #1 of 2).[2]

Key Facts

  • UBV photometric system is credited with the discovery of Harold Johnson[3].
  • UBV photometric system is credited with the discovery of William Wilson Morgan[4].
  • UBV photometric system's instance of is recorded as photometric system[5].
  • 1950 marks the founding of UBV photometric system[6].
  • UBV photometric system's uses is recorded as U band[7].
  • UBV photometric system's uses is recorded as B band[8].
  • UBV photometric system's uses is recorded as V band[9].

Body

Definition and Type

UBV photometric system's instance of is recorded as photometric system[5].

Origins

1950 marks the founding of UBV photometric system[6].

Why It Matters

UBV photometric system draws 214 Wikipedia views per month (photometric_system category, ranking #1 of 2).[2] It has Wikipedia articles in 16 language editions, a strong signal of global cultural recognition.[10] It is known by 28 alternative names across languages and contexts.[11]

Related Entities

Max Reger

References

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

Direct Wikidata claims

  1. [5] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [10] ↑ . Wikidata sitelinks. wikidata.org.
  3. [11] ↑ . 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). UBV photometric system. Retrieved May 3, 2026, from https://4ort.xyz/entity/ubv-photometric-system
MLA “UBV photometric system.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/ubv-photometric-system.
BibTeX @misc{4ortxyz_ubv-photometric-system_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{UBV photometric system}}, year = {2026}, url = {https://4ort.xyz/entity/ubv-photometric-system}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): UBV photometric system — https://4ort.xyz/entity/ubv-photometric-system (retrieved 2026-05-03)

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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. 8d ago · Twofivesixbot bot · 2026-05-24 view diff on Wikidata ↗
    Uses → U band, B band, V band
    Discoverer or inventor → Harold Johnson, William Wilson Morgan
    Uses → —
    Instance of → —
    + 4 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update-qualifiers:1||1|1 */ [[Property:P8189]]: 987007544483105171, mv to monolingual text names on J9U statements"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.