SN 2009hd

supernova

Thing supernova Q9331329

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SN 2009hd

Summary

SN 2009hd is a supernova^[1].

Key Facts

SN 2009hd's instance of is recorded as supernova^[2].
SN 2009hd's constellation is recorded as Leo^[3].
SN 2009hd's spectral class is recorded as SN.II^[4].
SN 2009hd's part of is recorded as Messier 66^[5].
SN 2009hd's catalog code is recorded as SN 2009hd^[6].
SN 2009hd's catalog code is recorded as 2MASS J11201698+1258463^[7].
SN 2009hd's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.077'}^[8].
SN 2009hd's SIMBAD ID is recorded as SN 2009hd^[9].
SN 2009hd's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+170.070792'}^[10].
SN 2009hd's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+12.979528'}^[11].
SN 2009hd's epoch is recorded as J2000.0^[12].

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Quick Facts

Instance of supernova

Part of Messier 66

Properties

Apparent magnitude unit: 1, amount: +16.077

Catalog code SN 2009hd, 2MASS J11201698+1258463

Constellation Leo

Declination unit: www.wikidata.org, amount: +12.979528

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Right ascension unit: www.wikidata.org, amount: +170.070792

Spectral class SN.II

External References (1)

Simbad id SN 2009hd

References

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

Direct Wikidata claims

[2] ↑ Q9331329 — instance of (P31): supernova. SIMBAD. wikidata.org.
[3] ↑ Q9331329 — constellation (P59): Leo. VizieR. wikidata.org.
[4] ↑ Q9331329 — spectral class (P215): SN.II. Asiago Supernova Catalogue. wikidata.org.
[5] ↑ Q9331329 — part of (P361): Messier 66. SIMBAD. wikidata.org.
[6] ↑ Q9331329 — catalog code (P528): SN 2009hd. SIMBAD. wikidata.org.
[7] ↑ Q9331329 — catalog code (P528): 2MASS J11201698+1258463. SIMBAD. wikidata.org.
[8] ↑ Q9331329 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.077'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[9] ↑ Q9331329 — SIMBAD ID (P3083): SN 2009hd. SIMBAD. wikidata.org.
[10] ↑ Q9331329 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+170.070792'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[11] ↑ Q9331329 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+12.979528'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[12] ↑ Q9331329 — epoch (P6259): J2000.0. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.

Class ancestry

[1] ↑ Q9331329 is an instance of supernova (Q3937) [P31, primary]. 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 2009hd. Retrieved May 7, 2026, from https://4ort.xyz/entity/q9331329

MLA “SN 2009hd.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q9331329.

BibTeX

@misc{4ortxyz_q9331329_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{SN 2009hd}}, year = {2026}, url = {https://4ort.xyz/entity/q9331329}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): SN 2009hd — https://4ort.xyz/entity/q9331329 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q9331329 · Last refreshed: May 7, 2026