HAT-P-42

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HAT-P-42

Summary

HAT-P-42 is a star^[1].

Key Facts

HAT-P-42's instance of is recorded as star^[2].
HAT-P-42's instance of is recorded as near-infrared source^[3].
HAT-P-42's constellation is recorded as Hydra^[4].
HAT-P-42's child astronomical body is recorded as Iolaus^[5].
HAT-P-42's catalog code is recorded as 2MASS J09012265+0605500^[6].
HAT-P-42's catalog code is recorded as GSC 00232-01451^[7].
HAT-P-42's catalog code is recorded as UCAC3 193-100604^[8].
HAT-P-42's catalog code is recorded as SDSS J090122.64+060549.9^[9].
HAT-P-42's catalog code is recorded as UCAC2 33928205^[10].
HAT-P-42's catalog code is recorded as Gaia DR2 583455604761166848^[11].
HAT-P-42's catalog code is recorded as TIC 270468559^[12].
HAT-P-42's catalog code is recorded as WISEA J090122.64+060549.7^[13].
HAT-P-42's catalog code is recorded as Gaia DR3 583455604761166848^[14].
HAT-P-42's catalog code is recorded as TOI-571^[15].
HAT-P-42's catalog code is recorded as HAT-P-42^[16].
HAT-P-42's apparent magnitude is recorded as {'unit': '1', 'amount': '+12.83'}^[17].
HAT-P-42's apparent magnitude is recorded as {'unit': '1', 'amount': '+12.02'}^[18].
HAT-P-42's apparent magnitude is recorded as {'unit': '1', 'amount': '+10.677'}^[19].
HAT-P-42's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.592'}^[20].
HAT-P-42's apparent magnitude is recorded as {'unit': '1', 'amount': '+11.974'}^[21].
HAT-P-42's apparent magnitude is recorded as {'unit': '1', 'amount': '+11.993416'}^[22].
HAT-P-42's apparent magnitude is recorded as {'unit': '1', 'amount': '+12.65'}^[23].
HAT-P-42's apparent magnitude is recorded as {'unit': '1', 'amount': '+13.85'}^[24].
HAT-P-42's apparent magnitude is recorded as {'unit': '1', 'amount': '+12.621'}^[25].
HAT-P-42's apparent magnitude is recorded as {'unit': '1', 'amount': '+10.96'}^[26].

Body

Designation and Status

Recorded instance of include star^[2] and near-infrared source^[3].

History and Context

Catalog codes include 2MASS J09012265+0605500^[6], GSC 00232-01451^[7], UCAC3 193-100604^[8], SDSS J090122.64+060549.9^[9], UCAC2 33928205^[10], and Gaia DR2 583455604761166848^[11].

⭐ Popularity Graph

0/100 established

Quick Facts

Instance of star, near-infrared source

Properties

Age estimated by a dating method unit: www.wikidata.org, amount: +5.1

Apparent magnitude unit: 1, amount: +12.83, unit: 1, amount: +12.02, unit: 1, amount: +10.677, unit: 1, amount: +14.592, unit: 1, amount: +11.974, unit: 1, amount: +11.993416, unit: 1, amount: +12.65, unit: 1, amount: +13.85, unit: 1, amount: +12.621, unit: 1, amount: +10.96, unit: 1, amount: +10.626, unit: 1, amount: +12.17

Catalog code 2MASS J09012265+0605500, GSC 00232-01451, UCAC3 193-100604, SDSS J090122.64+060549.9, UCAC2 33928205, Gaia DR2 583455604761166848, TIC 270468559, WISEA J090122.64+060549.7, Gaia DR3 583455604761166848, TOI-571, HAT-P-42

Child astronomical body Iolaus

Constellation Hydra

Declination unit: www.wikidata.org, amount: +6.09722607488

Declination component of proper motion unit: www.wikidata.org, amount: -33.269

Distance from earth unit: www.wikidata.org, amount: +413.924

Effective temperature unit: www.wikidata.org, amount: +5773.6665

Epoch J2000.0

Imported from wholeness_audit_2026-05-02

Luminosity unit: www.wikidata.org, amount: +1.9774454

Mass unit: www.wikidata.org, amount: +1.179

Metallicity unit: 1, amount: +0.27

Name Lerna

Parallax unit: www.wikidata.org, amount: +2.4159

Radial velocity unit: www.wikidata.org, amount: +20.605

Radius unit: www.wikidata.org, amount: +1.405405

Right ascension unit: www.wikidata.org, amount: +135.34437158111

Right ascension component of proper motion unit: www.wikidata.org, amount: -3.064

Surface gravity unit: www.wikidata.org, amount: +13800

External References (4)

Gaia id 583455604761166848

Google knowledge graph id /g/11x97yvy7

Nasa exoplanet archive id HAT-P-42

Simbad id HAT-P-42

🌐 Available in 3 languages

jaHAT-P-42 plHAT-P-42 ruHAT-P-42

🏷️ Also known as

en HAT-P-42 en Lerna

References

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

Direct Wikidata claims

[2] ↑ HAT-P-42 — instance of (P31): star. SIMBAD. wikidata.org.
[3] ↑ HAT-P-42 — instance of (P31): near-infrared source. SIMBAD. wikidata.org.
[4] ↑ HAT-P-42 — constellation (P59): Hydra. wikidata.org.
[5] ↑ HAT-P-42 — child astronomical body (P398): Iolaus. 0bf71ea7-eb0b-44fe-ba3a-7895e80dc750.filesusr.com. 0bf71ea7-eb0b-44fe-ba3a-7895e80dc750.filesusr.com. Provenance: wikidata.org.
[6] ↑ HAT-P-42 — catalog code (P528): 2MASS J09012265+0605500. SIMBAD. wikidata.org.
[7] ↑ HAT-P-42 — catalog code (P528): GSC 00232-01451. SIMBAD. wikidata.org.
[8] ↑ HAT-P-42 — catalog code (P528): UCAC3 193-100604. SIMBAD. wikidata.org.
[9] ↑ HAT-P-42 — catalog code (P528): SDSS J090122.64+060549.9. SIMBAD. wikidata.org.
[10] ↑ HAT-P-42 — catalog code (P528): UCAC2 33928205. SIMBAD. wikidata.org.
[11] ↑ HAT-P-42 — catalog code (P528): Gaia DR2 583455604761166848. SIMBAD. wikidata.org.
[12] ↑ HAT-P-42 — catalog code (P528): TIC 270468559. SIMBAD. wikidata.org.
[13] ↑ HAT-P-42 — catalog code (P528): WISEA J090122.64+060549.7. Gaia Data Release 3. wikidata.org.
[14] ↑ HAT-P-42 — catalog code (P528): Gaia DR3 583455604761166848. SIMBAD. wikidata.org.
[15] ↑ HAT-P-42 — catalog code (P528): TOI-571. SIMBAD. wikidata.org.
[16] ↑ HAT-P-42 — catalog code (P528): HAT-P-42. SIMBAD. wikidata.org.
[17] ↑ HAT-P-42 — apparent magnitude (P1215): {'unit': '1', 'amount': '+12.83'}. Fourth USNO CCD Astrograph Catalog. wikidata.org.
[18] ↑ HAT-P-42 — apparent magnitude (P1215): {'unit': '1', 'amount': '+12.02'}. Fourth USNO CCD Astrograph Catalog. wikidata.org.
[19] ↑ HAT-P-42 — apparent magnitude (P1215): {'unit': '1', 'amount': '+10.677'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[20] ↑ HAT-P-42 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.592'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[21] ↑ HAT-P-42 — apparent magnitude (P1215): {'unit': '1', 'amount': '+11.974'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[22] ↑ HAT-P-42 — apparent magnitude (P1215): {'unit': '1', 'amount': '+11.993416'}. Gaia Early Data Release 3. wikidata.org.
[23] ↑ HAT-P-42 — apparent magnitude (P1215): {'unit': '1', 'amount': '+12.65'}. The seventh data release of the Sloan Digital Sky Survey. wikidata.org.
[24] ↑ HAT-P-42 — apparent magnitude (P1215): {'unit': '1', 'amount': '+13.85'}. The seventh data release of the Sloan Digital Sky Survey. wikidata.org.
[25] ↑ HAT-P-42 — apparent magnitude (P1215): {'unit': '1', 'amount': '+12.621'}. The seventh data release of the Sloan Digital Sky Survey. wikidata.org.
[26] ↑ HAT-P-42 — apparent magnitude (P1215): {'unit': '1', 'amount': '+10.96'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.

Class ancestry

[1] ↑ HAT-P-42 is an instance of star (Q523) [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). HAT-P-42. Retrieved May 3, 2026, from https://4ort.xyz/entity/hat-p-42

MLA “HAT-P-42.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/hat-p-42.

BibTeX

@misc{4ortxyz_hat-p-42_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{HAT-P-42}}, year = {2026}, url = {https://4ort.xyz/entity/hat-p-42}, note = {Accessed: 2026-05-03}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): HAT-P-42 — https://4ort.xyz/entity/hat-p-42 (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/hat-p-42 · Last refreshed: May 3, 2026