SN 1999gn

supernova
Thing supernova Q4048831
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SN 1999gn

Summary

SN 1999gn is a supernova[1].

Key Facts

  • SN 1999gn's instance of is recorded as supernova[2].
  • SN 1999gn's constellation is recorded as Virgo[3].
  • SN 1999gn's spectral class is recorded as SN.IIP[4].
  • SN 1999gn's part of is recorded as Messier 61[5].
  • SN 1999gn's catalog code is recorded as SN 1999gn[6].
  • SN 1999gn's catalog code is recorded as 2MASS J12215703+0427456[7].
  • SN 1999gn's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.0'}[8].
  • SN 1999gn's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.836'}[9].
  • SN 1999gn's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.487'}[10].
  • SN 1999gn's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.344'}[11].
  • SN 1999gn's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+1566'}[12].
  • SN 1999gn's Google Knowledge Graph ID is recorded as /g/12233tlh[13].
  • SN 1999gn's SIMBAD ID is recorded as SN 1999gn[14].
  • SN 1999gn's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+185.487667'}[15].
  • SN 1999gn's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+4.462694'}[16].
  • SN 1999gn's epoch is recorded as J2000.0[17].

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] . Asiago Supernova Catalogue. wikidata.org.
  4. [5] . SIMBAD. wikidata.org.
  5. [6] . SIMBAD. wikidata.org.
  6. [7] . SIMBAD. wikidata.org.
  7. [8] . Asiago Supernova Catalogue (Version 2008-Mar). wikidata.org.
  8. [9] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  9. [10] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  10. [11] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  11. [12] . Classifications of the Host Galaxies of Supernovae, Set II. wikidata.org.
  12. [13] . wikidata.org.
  13. [14] . wikidata.org.
  14. [15] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  15. [16] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
  16. [17] . VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). 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 1999gn. Retrieved May 7, 2026, from https://4ort.xyz/entity/q4048831
MLA “SN 1999gn.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q4048831.
BibTeX @misc{4ortxyz_q4048831_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{SN 1999gn}}, year = {2026}, url = {https://4ort.xyz/entity/q4048831}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): SN 1999gn — https://4ort.xyz/entity/q4048831 (retrieved 2026-05-07)

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