SN 2003em

supernova

Thing supernova Q9328898

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SN 2003em

Summary

SN 2003em is a supernova^[1].

Key Facts

SN 2003em's instance of is recorded as supernova^[2].
SN 2003em's constellation is recorded as Cetus^[3].
SN 2003em's spectral class is recorded as SNIa^[4].
SN 2003em's part of is recorded as Q78959156^[5].
SN 2003em's catalog code is recorded as SN 2003em^[6].
SN 2003em's apparent magnitude is recorded as {'unit': '1', 'amount': '+17.2'}^[7].
SN 2003em's SIMBAD ID is recorded as SN 2003em^[8].
SN 2003em's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+32.334292'}^[9].
SN 2003em's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-23.414722'}^[10].
SN 2003em's epoch is recorded as J2000.0^[11].

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Quick Facts

Instance of supernova

Part of Q78959156

Properties

Apparent magnitude unit: 1, amount: +17.2

Catalog code SN 2003em

Constellation Cetus

Declination unit: www.wikidata.org, amount: -23.414722

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Right ascension unit: www.wikidata.org, amount: +32.334292

Spectral class SNIa

External References (1)

Simbad id SN 2003em

🏷️ Also known as

pl SN 2003EM

References

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

Direct Wikidata claims

[2] ↑ Q9328898 — instance of (P31): supernova. SIMBAD. wikidata.org.
[3] ↑ Q9328898 — constellation (P59): Cetus. VizieR. wikidata.org.
[4] ↑ Q9328898 — spectral class (P215): SNIa. Asiago Supernova Catalogue. wikidata.org.
[5] ↑ Q9328898 — part of (P361): Q78959156. wikidata.org.
[6] ↑ Q9328898 — catalog code (P528): SN 2003em. SIMBAD. wikidata.org.
[7] ↑ Q9328898 — apparent magnitude (P1215): {'unit': '1', 'amount': '+17.2'}. Asiago Supernova Catalogue (Version 2008-Mar). wikidata.org.
[8] ↑ Q9328898 — SIMBAD ID (P3083): SN 2003em. SIMBAD. wikidata.org.
[9] ↑ Q9328898 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+32.334292'}. Supernova 2003em in ESO 478-G6. wikidata.org.
[10] ↑ Q9328898 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-23.414722'}. Supernova 2003em in ESO 478-G6. wikidata.org.
[11] ↑ Q9328898 — epoch (P6259): J2000.0. Supernova 2003em in ESO 478-G6. wikidata.org.

Class ancestry

[1] ↑ Q9328898 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 2003em. Retrieved May 7, 2026, from https://4ort.xyz/entity/q9328898

MLA “SN 2003em.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q9328898.

BibTeX

@misc{4ortxyz_q9328898_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{SN 2003em}}, year = {2026}, url = {https://4ort.xyz/entity/q9328898}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): SN 2003em — https://4ort.xyz/entity/q9328898 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q9328898 · Last refreshed: May 7, 2026