Asteroid
433 Eros
A near-Earth asteroid orbited by NASA's NEAR Shoemaker.
- Type
- Asteroid
- Domain
- Scientific connections
- Connections
- 5
NASA/Marshall · NASA media (public domain)
- Type: Asteroid
- Domain: Scientific connections
Orbit & physical parameters
Osculating orbit and physical parameters from the NASA JPL Small-Body Database · Amor · near-Earth · epoch 2026-06-09 (JD 2461200.5 TDB) · Earth MOID 0.148798 au
| Semi-major axis | 1.458244 ± 1.5185e-10 au | NASA JPL · calculated |
| Eccentricity | 0.222878 ± 9.3902e-9 | NASA JPL · calculated |
| Perihelion distance | 1.133233 ± 1.3695e-8 au | NASA JPL · calculated |
| Aphelion distance | 1.783254 ± 1.8569e-10 au | NASA JPL · calculated |
| Inclination | 10.828544 ± 1.1580e-6 deg | NASA JPL · calculated |
| Longitude of ascending node | 304.267971 ± 3.5792e-6 deg | NASA JPL · calculated |
| Argument of perihelion | 178.918132 ± 3.9825e-6 deg | NASA JPL · calculated |
| Orbital period | 643.196389 ± 1.0047e-7 d | NASA JPL · calculated |
| Diameter | 16.84 ± 0.06 km | NASA JPL · catalogued |
| Geometric albedo | 0.25 ± 0.06 | NASA JPL · estimated |
| Rotation period | 5.27 h | NASA JPL · catalogued |
| Absolute magnitude (H) | 10.4 mag | NASA JPL · catalogued |
Full field-level provenance
- Semi-major axis: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · orbit.elements · a · JPL orbit determination (least-squares fit to the observation arc) · calculated · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Eccentricity: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · orbit.elements · e · JPL orbit determination (least-squares fit to the observation arc) · calculated · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Perihelion distance: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · orbit.elements · q · JPL orbit determination (least-squares fit to the observation arc) · calculated · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Aphelion distance: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · orbit.elements · ad · JPL orbit determination (least-squares fit to the observation arc) · calculated · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Inclination: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · orbit.elements · i · JPL orbit determination (least-squares fit to the observation arc) · calculated · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Longitude of ascending node: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · orbit.elements · om · JPL orbit determination (least-squares fit to the observation arc) · calculated · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Argument of perihelion: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · orbit.elements · w · JPL orbit determination (least-squares fit to the observation arc) · calculated · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Orbital period: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · orbit.elements · per · JPL orbit determination (least-squares fit to the observation arc) · calculated · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Diameter: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · phys_par · phys.diameter · catalogued value · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Geometric albedo: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · phys_par · phys.albedo · Bayesian estimate · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Rotation period: Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · phys_par · phys.rot_per · catalogued value · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
- Absolute magnitude (H): Jet Propulsion Laboratory / Solar System Dynamics · JPL SBDB · phys_par · phys.H · catalogued value · JPL solution by Giorgini, 9130 obs · retrieved 2026-07-11
Orbital elements are a calculated JPL orbit-determination fit, all referred to the single osculating epoch above (solution by Giorgini); each carries its own uncertainty. Fields the database did not provide are omitted, never invented.
Experience system V6
Small-body profile
A catalog-first story for orbit class, discovery, physical parameters, and planetary-defense context when recorded.
- 01
Observe
NASA imagery anchors the visual reading with licensed source metadata.
- 02
Measure
Measurement panels use graph coverage, catalog identifiers, and source availability without inventing values.
- 03
Locate
Part of Solar System.
- 04
Connect
5 graph relations shape the knowledge viewport.
- Object type
- Asteroid
- Graph relations
- 5
- Verified sources
- 2
- Image records
- 1
- Domain
- Scientific connections
- Status
- Graph entity
Scientific map
Orbit context
- Primary orbital anchor
- The Sun
- Measured orbit field
- Orbital distance not recorded in this graph record
Original SVG diagram
Small-body anatomy
- Designation
- (433) Eros
- Discovery
- Carl Gustav Witt, 1898
- Eccentricity
- Not recorded
- Inclination
- Not recorded
Visual knowledge graph
Relationships, not isolated facts
This viewport is generated from the Asteria knowledge graph. Science, culture, and interpretive links remain separated by domain so visual context never changes the evidentiary meaning of a relation.
- Member of groupAmor asteroids
- Visited byNEAR Shoemaker
- Orbited byNEAR Shoemaker
- Landing site ofNEAR Shoemaker
- Part ofSolar System
Image provenance
Photography as evidence
Continue the atlas
Curated next objects
Solar System
The Sun and the bodies gravitationally bound to it.
near earth objectAmor asteroids
Near-Earth asteroids that approach Earth's orbit from the outside without crossing it, often crossing the orbit of Mars — named after 1221 Amor.
space missionNEAR Shoemaker
NASA's Near Earth Asteroid Rendezvous mission, the first spacecraft to orbit an asteroid (433 Eros, 2000) and the first to soft-land on one (2001).
launch vehicleDelta II
A highly reliable medium-lift workhorse that launched GPS satellites and many NASA planetary missions, including the Mars rovers Spirit and Opportunity and the Kepler telescope.
mission classFlyby Mission
A spacecraft that passes a small body once at high speed, gathering images and data during a brief encounter. Flybys are the cheapest way to reach a new target — Giotto at Halley, Deep Space 1 at Borrelly, Lucy at the Trojans.
mission classLander Mission
A spacecraft (or a deployed element) that touches down on a small body's surface — Philae on comet 67P, NEAR on Eros, and the touchdown sampling of Hayabusa and Hayabusa2.
Observation
How this was captured
- Source
- NASA
- Observation date
- 1996-01-31
Data
Scientific data & provenance
Data & provenance
- Stable ID
asteroid:eros- Type
- Asteroid
- Domain
- Scientific connections
- Relationships
- 5
- Graph version
- 1.0.0
Dataset membership
Open data
In the graph export: graph.json · graph.jsonld
Planned API: GET /api/v0/entities/asteroid:eros
Scientific quality
Substantial4 of 6 applicable dimensions complete
- Description
- Complete
- Source coverage
- Complete
- Relationship coverage
- Complete
- Review coverage
- None
- Citation coverage
- None
- Image coverage
- Complete
- Timeline coverage
- Not applicable
Scientific entity. Dimensions that cannot apply to this object are excluded rather than counted as gaps. See the evidence framework and authority dashboard.
You might also explore
- Launch vehicleDelta IILinked through NEAR Shoemaker
- Mission classFlyby MissionLinked through NEAR Shoemaker
- Mission classLander MissionLinked through NEAR Shoemaker
- OrganizationNASALinked through NEAR Shoemaker
- Mission classOrbiter MissionLinked through NEAR Shoemaker
- Mission phaseProximity OperationsLinked through NEAR Shoemaker
Sources & references
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.
- NASA JPLJet Propulsion Laboratory / Solar System Dynamics
Orbital data, ephemerides, and small-body parameters for planets, asteroids, and comets.