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SN 1990U

supernova in constellation Pegasus
Thing supernova Q5176756
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SN 1990U

Summary

SN 1990U is a supernova[1].

Key Facts

  • SN 1990U's instance of is recorded as supernova[2].
  • SN 1990U's constellation is recorded as Pegasus[3].
  • SN 1990U's spectral class is recorded as SNIb[4].
  • SN 1990U is part of Q754097[5].
  • SN 1990U's catalog code is recorded as SN 1990U[6].
  • SN 1990U's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.76'}[7].
  • SN 1990U's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+2371'}[8].
  • SN 1990U's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+346.229000'}[9].
  • SN 1990U's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+12.305583'}[10].
  • SN 1990U's epoch is recorded as J2000.0[11].

Body

Definition and Type

SN 1990U's instance of is recorded as supernova[2].

Use and Application

SN 1990U is part of Q754097[5].

References

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

Direct Wikidata claims

  1. [2] ↑ . SIMBAD. wikidata.org.
  2. [3] ↑ . VizieR. wikidata.org.
  3. [4] ↑ . Optical spectra of 73 stripped-envelope core-collapse supernovae. wikidata.org.
  4. [5] ↑ . SIMBAD. wikidata.org.
  5. [6] ↑ . SIMBAD. wikidata.org.
  6. [7] ↑ . Asiago Supernova Catalogue (Version 2008-Mar). wikidata.org.
  7. [8] ↑ . Progenitor diagnostics for stripped core-collapse supernovae: measured metallicities at explosion sites. wikidata.org.
  8. [9] ↑ . Sternberg Astronomical Institute supernova catalogue. wikidata.org.
  9. [10] ↑ . Sternberg Astronomical Institute supernova catalogue. wikidata.org.
  10. [11] ↑ . Sternberg Astronomical Institute supernova catalogue. wikidata.org.

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). SN 1990U. Retrieved May 7, 2026, from https://4ort.xyz/entity/sn-1990u
MLA “SN 1990U.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/sn-1990u.
BibTeX @misc{4ortxyz_sn-1990u_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{SN 1990U}}, year = {2026}, url = {https://4ort.xyz/entity/sn-1990u}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): SN 1990U — https://4ort.xyz/entity/sn-1990u (retrieved 2026-05-07)

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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. 10w ago · Phantomdj · 2026-06-11 view diff on Wikidata ↗
    Part of → Q754097
    Freebase id → /m/03wbkpm
    Declination → {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount':
    Constellation → Pegasus
    + 10 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-update:2||1|1 */ [[Property:P31]]: [[Q3937]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.