SIMBAD

simbad.cds.unistra.fr ↗

Astronomical objects connected to literature and identifiers

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SI Score: 60/100
Pricing: Free AI reading, not confirmed
Free plan: Not confirmed
Sign-up required: Not required AI reading, not confirmed

astronomy scientific-reference object-database

Ask SI about SIMBAD

Answers use saved listing facts and recorded sources.

What it does

SIMBAD compiles information about astronomical objects studied in scientific literature, including identifiers, positions and bibliographic references.

Search an object's name to connect alternate identifiers with published information. The bibliography provides a route beyond basic measurements. SIMBAD describes its data as a heterogeneous compilation, so keep the source and measurement context when comparing values from different observations.

SIMBAD says it should not be used as a catalogue; VizieR supplies published object lists and surveys. Its stated service licence is ODbL, and the page requests citation of the original paper.

Sources

SIMBAD Astronomical Database - CDS (Strasbourg) (Oct 26, 2026)

SI Score

60/100

#105 in Reference

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 26, 2026Score ceiling for this evidence: 84/100.

Product usefulness 60

Evidence

Object-name lookup and identifier cross-referencing have an explicit compilation boundary.

Limits: AI review of saved source passages. No hands-on test, human approval or automatic-provider checker receipt.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checksunknown

No check recorded.

HTML accessibility checksunknown

No check recorded.

Homepage HTML responseunknown

No check recorded.

Trackers in homepage HTMLunknown

No check recorded.

Page date hintsunknown

No check recorded.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

simbad.cds.unistra.fr/simbad/
- PricingAI reading, not confirmedChecked Oct 26, 2026
  The official page says use of SIMBAD is free without registration under ODbL.
- Sign-up requiredAI reading, not confirmedChecked Oct 26, 2026
  The official introduction explicitly permits service use without registration.
- Product usefulness evidenceChecked Oct 26, 2026

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