SN 1998dm

supernova

Thing supernova Q9327668

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SN 1998dm

Summary

SN 1998dm is a supernova^[1].

Key Facts

SN 1998dm's instance of is recorded as supernova^[2].
SN 1998dm's instance of is recorded as variable star^[3].
SN 1998dm's constellation is recorded as Cetus^[4].
SN 1998dm's spectral class is recorded as SN.Ia-norm^[5].
SN 1998dm is part of Q84538241^[6].
SN 1998dm's catalog code is recorded as SN 1998dm^[7].
SN 1998dm's redshift is recorded as {'unit': '1', 'amount': '+0.0049'}^[8].
SN 1998dm's redshift is recorded as {'unit': '1', 'amount': '+0.0070'}^[9].
SN 1998dm's redshift is recorded as {'unit': '1', 'amount': '+0.0071'}^[10].
SN 1998dm's redshift is recorded as {'unit': '1', 'amount': '+0.0075'}^[11].
SN 1998dm's redshift is recorded as {'unit': '1', 'amount': '+0.0054'}^[12].
SN 1998dm's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.70'}^[13].
SN 1998dm's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+1615'}^[14].
SN 1998dm's right ascension is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+21.558208'}^[15].
SN 1998dm's declination is recorded as {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-6.103889'}^[16].
SN 1998dm's epoch is recorded as J2000.0^[17].

Body

Definition and Type

Recorded instance of include supernova^[2] and variable star^[3].

Use and Application

SN 1998dm is part of Q84538241^[6].

⭐ Popularity Graph

0/100 established

Quick Facts

Instance of supernova, variable star

Part of Q84538241

Properties

Apparent magnitude unit: 1, amount: +14.70

Catalog code SN 1998dm

Constellation Cetus

Declination unit: www.wikidata.org, amount: -6.103889

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Radial velocity unit: www.wikidata.org, amount: +1615

Redshift unit: 1, amount: +0.0049, unit: 1, amount: +0.0070, unit: 1, amount: +0.0071, unit: 1, amount: +0.0075, unit: 1, amount: +0.0054

Right ascension unit: www.wikidata.org, amount: +21.558208

Spectral class SN.Ia-norm

External References (2)

Google knowledge graph id /g/121_jqry

Simbad id SN 1998dm

🏷️ Also known as

pl SN 1998DM

References

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

Direct Wikidata claims

[2] ↑ Q9327668 — instance of (P31): supernova. SIMBAD. wikidata.org.
[3] ↑ Q9327668 — instance of (P31): variable star. SIMBAD. wikidata.org.
[4] ↑ Q9327668 — constellation (P59): Cetus. VizieR. wikidata.org.
[5] ↑ Q9327668 — spectral class (P215): SN.Ia-norm. Berkeley Supernova Ia Program - I. Observations, data reduction and spectroscopic sample of 582 low-redshift Type Ia supernovae. wikidata.org.
[6] ↑ Q9327668 — part of (P361): Q84538241. SIMBAD. wikidata.org.
[7] ↑ Q9327668 — catalog code (P528): SN 1998dm. SIMBAD. wikidata.org.
[8] ↑ Q9327668 — redshift (P1090): {'unit': '1', 'amount': '+0.0049'}. Berkeley Supernova Ia Program - I. Observations, data reduction and spectroscopic sample of 582 low-redshift Type Ia supernovae. wikidata.org.
[9] ↑ Q9327668 — redshift (P1090): {'unit': '1', 'amount': '+0.0070'}. Berkeley Supernova Ia Program - I. Observations, data reduction and spectroscopic sample of 582 low-redshift Type Ia supernovae. wikidata.org.
[10] ↑ Q9327668 — redshift (P1090): {'unit': '1', 'amount': '+0.0071'}. Berkeley Supernova Ia Program - I. Observations, data reduction and spectroscopic sample of 582 low-redshift Type Ia supernovae. wikidata.org.
[11] ↑ Q9327668 — redshift (P1090): {'unit': '1', 'amount': '+0.0075'}. Berkeley Supernova Ia Program - I. Observations, data reduction and spectroscopic sample of 582 low-redshift Type Ia supernovae. wikidata.org.
[12] ↑ Q9327668 — redshift (P1090): {'unit': '1', 'amount': '+0.0054'}. Berkeley Supernova Ia Program - I. Observations, data reduction and spectroscopic sample of 582 low-redshift Type Ia supernovae. wikidata.org.
[13] ↑ Q9327668 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.70'}. Asiago Supernova Catalogue (Version 2008-Mar). wikidata.org.
[14] ↑ Q9327668 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '+1615'}. Cosmological Results from High‐zSupernovae. wikidata.org.
[15] ↑ Q9327668 — right ascension (P6257): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '+21.558208'}. Asiago Supernova Catalogue (Version 2008-Mar). wikidata.org.
[16] ↑ Q9327668 — declination (P6258): {'unit': 'http://www.wikidata.org/entity/Q28390', 'amount': '-6.103889'}. Asiago Supernova Catalogue (Version 2008-Mar). wikidata.org.
[17] ↑ Q9327668 — epoch (P6259): J2000.0. Asiago Supernova Catalogue (Version 2008-Mar). wikidata.org.

Class ancestry

[1] ↑ Q9327668 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 1998dm. Retrieved May 7, 2026, from https://4ort.xyz/entity/q9327668

MLA “SN 1998dm.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q9327668.

BibTeX

@misc{4ortxyz_q9327668_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{SN 1998dm}}, year = {2026}, url = {https://4ort.xyz/entity/q9327668}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): SN 1998dm — https://4ort.xyz/entity/q9327668 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q9327668 · Last refreshed: May 7, 2026