HZ 21

star in the constellation Coma Berenices

Thing white_dwarf Q87042492

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HZ 21

Summary

HZ 21 is a white dwarf^[1].

Key Facts

HZ 21's instance of is recorded as white dwarf^[2].
HZ 21's constellation is recorded as Coma Berenices^[3].
HZ 21's spectral class is recorded as DO^[4].
HZ 21's catalog code is recorded as CBS 159^[5].
HZ 21's catalog code is recorded as CSI+33-12114^[6].
HZ 21's catalog code is recorded as EGGR 86^[7].
HZ 21's catalog code is recorded as FB 88^[8].
HZ 21's catalog code is recorded as GEN# +6.20020086^[9].
HZ 21's catalog code is recorded as GSC 02527-02161^[10].
HZ 21's catalog code is recorded as HZ 21^[11].
HZ 21's catalog code is recorded as PG 1211+332^[12].
HZ 21's catalog code is recorded as UBV 10985^[13].
HZ 21's catalog code is recorded as WD 1211+332^[14].
HZ 21's catalog code is recorded as uvby98 620020086^[15].
HZ 21's catalog code is recorded as 2MASS J12135625+3256314^[16].
HZ 21's catalog code is recorded as [TFW97] J121356.41+325630.90^[17].
HZ 21's catalog code is recorded as 1SWASP J121356.28+325631.6^[18].
HZ 21's catalog code is recorded as SDSS J121356.22+325631.5^[19].
HZ 21's catalog code is recorded as LAMOST J121356.34+325633.0^[20].
HZ 21's catalog code is recorded as Gaia DR2 4016474027321256704^[21].
HZ 21's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.688'}^[22].
HZ 21's apparent magnitude is recorded as {'unit': '1', 'amount': '+13.125'}^[23].
HZ 21's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.837'}^[24].
HZ 21's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.038'}^[25].
HZ 21's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.361'}^[26].

Body

Definition and Type

HZ 21's instance of is recorded as white dwarf^[2].

⭐ Popularity Graph

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Quick Facts

Instance of white dwarf

Properties

Apparent magnitude unit: 1, amount: +14.688, unit: 1, amount: +13.125, unit: 1, amount: +14.837, unit: 1, amount: +15.038, unit: 1, amount: +14.361, unit: 1, amount: +15.351, unit: 1, amount: +15.564, unit: 1, amount: +15.566, unit: 1, amount: +14.90, unit: 1, amount: +15.62, unit: 1, amount: +13.88, unit: 1, amount: +15.26, unit: 1, amount: +14.41, unit: 1, amount: +14.7086

Catalog code CBS 159, CSI+33-12114, EGGR 86, FB 88, GEN# +6.20020086, GSC 02527-02161, HZ 21, PG 1211+332, UBV 10985, WD 1211+332, uvby98 620020086, 2MASS J12135625+3256314, [TFW97] J121356.41+325630.90, 1SWASP J121356.28+325631.6, SDSS J121356.22+325631.5, LAMOST J121356.34+325633.0, Gaia DR2 4016474027321256704

Constellation Coma Berenices

Declination unit: www.wikidata.org, amount: +32.94204439037280

Declination component of proper motion unit: www.wikidata.org, amount: +30.132

Distance from earth unit: www.wikidata.org, amount: +158.2304

Effective temperature unit: www.wikidata.org, amount: +55000

Epoch J2000.0

Imported from wholeness_audit_2026-05-02_v2

Parallax unit: www.wikidata.org, amount: +6.3199

Right ascension unit: www.wikidata.org, amount: +183.48443326266930

Right ascension component of proper motion unit: www.wikidata.org, amount: -100.883

Spectral class DO

External References (3)

Gaia id 4016474027321256704

Google knowledge graph id /g/11jff8pzzs

Simbad id HZ 21

🌐 Available in 2 languages

jaHZ 21 svHZ 21

References

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

Direct Wikidata claims

[2] ↑ Q87042492 — instance of (P31): white dwarf. SIMBAD. wikidata.org.
[3] ↑ Q87042492 — constellation (P59): Coma Berenices. SIMBAD. wikidata.org.
[4] ↑ Q87042492 — spectral class (P215): DO. The Palomar-Green catalog of ultraviolet-excess stellar objects. wikidata.org.
[5] ↑ Q87042492 — catalog code (P528): CBS 159. SIMBAD. wikidata.org.
[6] ↑ Q87042492 — catalog code (P528): CSI+33-12114. SIMBAD. wikidata.org.
[7] ↑ Q87042492 — catalog code (P528): EGGR 86. SIMBAD. wikidata.org.
[8] ↑ Q87042492 — catalog code (P528): FB 88. SIMBAD. wikidata.org.
[9] ↑ Q87042492 — catalog code (P528): GEN# +6.20020086. SIMBAD. wikidata.org.
[10] ↑ Q87042492 — catalog code (P528): GSC 02527-02161. SIMBAD. wikidata.org.
[11] ↑ Q87042492 — catalog code (P528): HZ 21. SIMBAD. wikidata.org.
[12] ↑ Q87042492 — catalog code (P528): PG 1211+332. SIMBAD. wikidata.org.
[13] ↑ Q87042492 — catalog code (P528): UBV 10985. SIMBAD. wikidata.org.
[14] ↑ Q87042492 — catalog code (P528): WD 1211+332. SIMBAD. wikidata.org.
[15] ↑ Q87042492 — catalog code (P528): uvby98 620020086. SIMBAD. wikidata.org.
[16] ↑ Q87042492 — catalog code (P528): 2MASS J12135625+3256314. SIMBAD. wikidata.org.
[17] ↑ Q87042492 — catalog code (P528): [TFW97] J121356.41+325630.90. SIMBAD. wikidata.org.
[18] ↑ Q87042492 — catalog code (P528): 1SWASP J121356.28+325631.6. SIMBAD. wikidata.org.
[19] ↑ Q87042492 — catalog code (P528): SDSS J121356.22+325631.5. SIMBAD. wikidata.org.
[20] ↑ Q87042492 — catalog code (P528): LAMOST J121356.34+325633.0. SIMBAD. wikidata.org.
[21] ↑ Q87042492 — catalog code (P528): Gaia DR2 4016474027321256704. SIMBAD. wikidata.org.
[22] ↑ Q87042492 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.688'}. Optical Multicolor Photometry of Spectrophotometric Standard Stars. wikidata.org.
[23] ↑ Q87042492 — apparent magnitude (P1215): {'unit': '1', 'amount': '+13.125'}. Optical Multicolor Photometry of Spectrophotometric Standard Stars. wikidata.org.
[24] ↑ Q87042492 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.837'}. Optical Multicolor Photometry of Spectrophotometric Standard Stars. wikidata.org.
[25] ↑ Q87042492 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.038'}. Optical Multicolor Photometry of Spectrophotometric Standard Stars. wikidata.org.
[26] ↑ Q87042492 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.361'}. Optical Multicolor Photometry of Spectrophotometric Standard Stars. wikidata.org.

Class ancestry

[1] ↑ Q87042492 is an instance of white dwarf (Q5871) [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). HZ 21. Retrieved May 7, 2026, from https://4ort.xyz/entity/q87042492

MLA “HZ 21.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q87042492.

BibTeX

@misc{4ortxyz_q87042492_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{HZ 21}}, year = {2026}, url = {https://4ort.xyz/entity/q87042492}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): HZ 21 — https://4ort.xyz/entity/q87042492 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q87042492 · Last refreshed: May 7, 2026