Apollo asteroid
Let an agent describe Apollo asteroids by designation, orbit, size and risk assessment, citing official impact monitoring and avoiding sensationalism.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent describe Apollo asteroids by designation, orbit, size and risk assessment, citing official impact monitoring and avoiding sensationalism.
A group of near-Earth asteroids whose orbits cross Earth orbit, with semi-major axes greater than 1 au and perihelion distances less than about 1.017 au; named after 1862 Apollo. Some are potentially hazardous asteroids.
What it is for: Planetary defence, science and potential resources.
It can be look up orbits and close approaches; check official impact risk assessments; follow discovery and tracking; explain classification.
Distinguishing features
Earth-crossing near-Earth asteroids
Largest NEA group
Some potentially hazardous
Tracked by monitoring systems
What it looks like
Faint moving points in telescopes; some imaged by radar or spacecraft.
Physical character
semi-major axis: greater than 1 au - definition
perihelion: less than about 1.017 au - definition
How it is recognised
Earth-crossing orbits
Designations such as 2020 UL3
Aten, Amor and Atira are other groups
Related models
is a kind of - category
is monitored by - monitoring
is contrasted with - other groups
is catalogued by - authority
In practice
Families and kinds
potentially hazardous Apollos
small Apollos
Apollos with moons
mission targets
Identifiers
MPC designation provisional or numbered designations asteroids
Standards and regulation
Torino and Palermo impact hazard scales
UN-endorsed International Asteroid Warning Network
Failure modes and hazards
Sensationalising close approaches
Using outdated risk estimates
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Identity Which asteroid.
Designations identify.
Designation
Name.
Designation
Designation.
- What is its designation? provenance
- When was it discovered? provenance
Orbit
Elements.
Orbit
Orbit.
- What are its orbital elements, from which ephemeris? provenance
- When is its next close approach? measurement
Risk Impact assessment.
Risk needs official sources.
Assessment
Official risk.
Assessment
Impact risk.
- What do official impact monitoring systems say about it? provenance
- What is its Torino scale rating? measurement
Framing
No sensationalism.
Framing
Risk framing.
- Is a close approach being presented accurately? boundary
- How far away will it pass? measurement
Physical Properties.
Properties are often uncertain.
Size
Estimate.
Size
Size.
- What is its estimated size, and how uncertain? measurement
- Which method gave it? provenance
Composition
Spectral type.
Composition
Composition.
- What spectral type or composition is suggested? provenance
- Has radar or a spacecraft studied it? provenance
Defence Planetary defence.
Tracking protects Earth.
Tracking
Surveys.
Tracking
Tracking.
- Which surveys track near-Earth asteroids? provenance
- How complete is the census for large objects? measurement
Missions
Tests.
Missions
Missions.
- Which missions have tested deflection or visited such asteroids? provenance
- What did they show? provenance
What the second pass must settle
- Should potentially hazardous asteroids be a separate entry?
- How should risk tables be linked?
- How should close approach alerts be presented?