SDSS J1539+0239

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SDSS J1539+0239

Summary

SDSS J1539+0239 is a star^[1].

Key Facts

SDSS J1539+0239's instance of is recorded as star^[2].
SDSS J1539+0239's instance of is recorded as horizontal branch star^[3].
SDSS J1539+0239's constellation is recorded as Serpens^[4].
SDSS J1539+0239's catalog code is recorded as SDSS J153935.66+023909.7^[5].
SDSS J1539+0239's catalog code is recorded as SDSS J153935.67+023909.8^[6].
SDSS J1539+0239's catalog code is recorded as 2MASS J15393565+0239096^[7].
SDSS J1539+0239's catalog code is recorded as Gaia DR2 4424096488483372800^[8].
SDSS J1539+0239's catalog code is recorded as WISEA J153935.65+023909.7^[9].
SDSS J1539+0239's catalog code is recorded as GALEXASC J153935.67+023910.1^[10].
SDSS J1539+0239's catalog code is recorded as GALEXMSC J153935.71+023910.3^[11].
SDSS J1539+0239's redshift is recorded as {'unit': '1', 'amount': '-0.00134'}^[12].
SDSS J1539+0239's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.5321'}^[13].
SDSS J1539+0239's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.976'}^[14].
SDSS J1539+0239's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.96'}^[15].
SDSS J1539+0239's apparent magnitude is recorded as {'unit': '1', 'amount': '+14.92'}^[16].
SDSS J1539+0239's apparent magnitude is recorded as {'unit': '1', 'amount': '+16.814'}^[17].
SDSS J1539+0239's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.548'}^[18].
SDSS J1539+0239's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.578'}^[19].
SDSS J1539+0239's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.642'}^[20].
SDSS J1539+0239's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.680'}^[21].
SDSS J1539+0239's apparent magnitude is recorded as {'unit': '1', 'amount': '+15.72'}^[22].
SDSS J1539+0239's color index is recorded as {'unit': '1', 'amount': '+0.04'}^[23].
SDSS J1539+0239's mass is recorded as {'unit': 'http://www.wikidata.org/entity/Q180892', 'amount': '+0.68'}^[24].
SDSS J1539+0239's parallax is recorded as {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+0.0931'}^[25].
SDSS J1539+0239's radial velocity is recorded as {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-372.6'}^[26].

Body

Designation and Status

Recorded instance of include star^[2] and horizontal branch star^[3].

History and Context

Catalog codes include SDSS J153935.66+023909.7^[5], SDSS J153935.67+023909.8^[6], 2MASS J15393565+0239096^[7], Gaia DR2 4424096488483372800^[8], WISEA J153935.65+023909.7^[9], and GALEXASC J153935.67+023910.1^[10].

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Quick Facts

Instance of star, horizontal branch star

Properties

Apparent magnitude unit: 1, amount: +15.5321, unit: 1, amount: +14.976, unit: 1, amount: +14.96, unit: 1, amount: +14.92, unit: 1, amount: +16.814, unit: 1, amount: +15.548, unit: 1, amount: +15.578, unit: 1, amount: +15.642, unit: 1, amount: +15.680, unit: 1, amount: +15.72

Catalog code SDSS J153935.66+023909.7, SDSS J153935.67+023909.8, 2MASS J15393565+0239096, Gaia DR2 4424096488483372800, WISEA J153935.65+023909.7, GALEXASC J153935.67+023910.1, GALEXMSC J153935.71+023910.3

Color index unit: 1, amount: +0.04

Constellation Serpens

Declination unit: www.wikidata.org, amount: +2.65272615374160

Declination component of proper motion unit: www.wikidata.org, amount: -7.658, unit: www.wikidata.org, amount: -10.0

Distance from earth unit: www.wikidata.org, amount: +9.0, unit: www.wikidata.org, amount: +12.0

Effective temperature unit: www.wikidata.org, amount: +7700

Epoch J2000.0

Imported from wholeness_audit_2026-05-02

Mass unit: www.wikidata.org, amount: +0.68

Metallicity unit: 1, amount: -2.55, unit: 1, amount: -2.0

Parallax unit: www.wikidata.org, amount: +0.0931

Radial velocity unit: www.wikidata.org, amount: -372.6

Redshift unit: 1, amount: -0.00134

Right ascension unit: www.wikidata.org, amount: +234.89862643180760

Right ascension component of proper motion unit: www.wikidata.org, amount: -5.300, unit: www.wikidata.org, amount: -10.6

Surface gravity unit: www.wikidata.org, amount: +1450, unit: 1, amount: +3

External References (3)

Gaia id 4424096488483372800

Google knowledge graph id /g/1z3t2g8d_

Simbad id SDSS J153935.66+023909.7

🏷️ Also known as

en SDSS J1539+0239 ru Звезда SDSS J1539+0239

References

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

Direct Wikidata claims

[2] ↑ SDSS J1539+0239 — instance of (P31): star. SIMBAD. wikidata.org.
[3] ↑ SDSS J1539+0239 — instance of (P31): horizontal branch star. SIMBAD. wikidata.org.
[4] ↑ SDSS J1539+0239 — constellation (P59): Serpens. VizieR. wikidata.org.
[5] ↑ SDSS J1539+0239 — catalog code (P528): SDSS J153935.66+023909.7. SIMBAD. wikidata.org.
[6] ↑ SDSS J1539+0239 — catalog code (P528): SDSS J153935.67+023909.8. SIMBAD. wikidata.org.
[7] ↑ SDSS J1539+0239 — catalog code (P528): 2MASS J15393565+0239096. SIMBAD. wikidata.org.
[8] ↑ SDSS J1539+0239 — catalog code (P528): Gaia DR2 4424096488483372800. SIMBAD. wikidata.org.
[9] ↑ SDSS J1539+0239 — catalog code (P528): WISEA J153935.65+023909.7. NASA/IPAC Extragalactic Database. wikidata.org.
[10] ↑ SDSS J1539+0239 — catalog code (P528): GALEXASC J153935.67+023910.1. NASA/IPAC Extragalactic Database. wikidata.org.
[11] ↑ SDSS J1539+0239 — catalog code (P528): GALEXMSC J153935.71+023910.3. NASA/IPAC Extragalactic Database. wikidata.org.
[12] ↑ SDSS J1539+0239 — redshift (P1090): {'unit': '1', 'amount': '-0.00134'}. The SDSS Photometric Catalog, Release 7. wikidata.org.
[13] ↑ SDSS J1539+0239 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.5321'}. Gaia Data Release 2. wikidata.org.
[14] ↑ SDSS J1539+0239 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.976'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[15] ↑ SDSS J1539+0239 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.96'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[16] ↑ SDSS J1539+0239 — apparent magnitude (P1215): {'unit': '1', 'amount': '+14.92'}. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003). wikidata.org.
[17] ↑ SDSS J1539+0239 — apparent magnitude (P1215): {'unit': '1', 'amount': '+16.814'}. The SDSS Photometric Catalog, Release 8. wikidata.org.
[18] ↑ SDSS J1539+0239 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.548'}. The SDSS Photometric Catalog, Release 8. wikidata.org.
[19] ↑ SDSS J1539+0239 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.578'}. The SDSS Photometric Catalog, Release 8. wikidata.org.
[20] ↑ SDSS J1539+0239 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.642'}. The SDSS Photometric Catalog, Release 8. wikidata.org.
[21] ↑ SDSS J1539+0239 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.680'}. The SDSS Photometric Catalog, Release 8. wikidata.org.
[22] ↑ SDSS J1539+0239 — apparent magnitude (P1215): {'unit': '1', 'amount': '+15.72'}. Weighing the galactic dark matter halo: a lower mass limit from the fastest halo star known. wikidata.org.
[23] ↑ SDSS J1539+0239 — color index (P1458): {'unit': '1', 'amount': '+0.04'}. Weighing the galactic dark matter halo: a lower mass limit from the fastest halo star known. wikidata.org.
[24] ↑ SDSS J1539+0239 — mass (P2067): {'unit': 'http://www.wikidata.org/entity/Q180892', 'amount': '+0.68'}. Weighing the galactic dark matter halo: a lower mass limit from the fastest halo star known. wikidata.org.
[25] ↑ SDSS J1539+0239 — parallax (P2214): {'unit': 'http://www.wikidata.org/entity/Q21500224', 'amount': '+0.0931'}. Gaia Data Release 2. wikidata.org.
[26] ↑ SDSS J1539+0239 — radial velocity (P2216): {'unit': 'http://www.wikidata.org/entity/Q3674704', 'amount': '-372.6'}. Weighing the galactic dark matter halo: a lower mass limit from the fastest halo star known. wikidata.org.

Class ancestry

[1] ↑ SDSS J1539+0239 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). SDSS J1539+0239. Retrieved May 3, 2026, from https://4ort.xyz/entity/sdss-j1539-0239

MLA “SDSS J1539+0239.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/sdss-j1539-0239.

BibTeX

@misc{4ortxyz_sdss-j1539-0239_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{SDSS J1539+0239}}, year = {2026}, url = {https://4ort.xyz/entity/sdss-j1539-0239}, note = {Accessed: 2026-05-03}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): SDSS J1539+0239 — https://4ort.xyz/entity/sdss-j1539-0239 (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/sdss-j1539-0239 · Last refreshed: May 3, 2026