Astrophyzix Weekly Near-Earth Object (NEO) & Potentially Hazardous Asteroid (PHA) Close Approach Report
Observatory Status & Data Integrity
Astrophyzix Planetary Defence reports are written using a fully dynamic, on-demand data retrieval pipeline linked directly to NASA's CNEOS NeoWs API infrastructure.
The monitoring interval is calculated at runtime and spans seven days forward from the exact timestamp of system access.
No caching layers, pre-processing, or static datasets are used. Every value presented is sourced from the most recent orbital solutions available within NASA systems at the time of query execution by the Astrophyzix Planetary Defence System.
Certain data is computed through the Astrophyzix Risk Index and presented alongside the raw data to give readers an easy to visualise scale of how notable an object is an a clear interpretation of the data.
UTC Timestamp Wed, 22 Apr 2026 20:10:55
Monitoring Window 2026-04-22 → 2026-04-28
Data Source NASA CNEOS NeoWs API (Live Stream)
Monitoring Overview
- Total NEOs tracked: 87
- Potentially Hazardous Asteroids: 8
- Objects within 10 Lunar Distances: 6
- Closest recorded approach: 2.956 LD
- Mean relative velocity: 13.7 km/s
- Largest object: 54071 (2000 GQ146) — 1418 m
Closest Approach Analysis — (2026 HL2)
| Parameter | Value |
|---|---|
| Approach Date | 2026-04-22 |
| Miss Distance | 2.956 LD |
| Estimated Diameter | 7 m |
| Velocity | 5.47 km/s |
| ARI Score | 34 |
| Classification | NEO |
| Hazard Status | Not Hazardous |
(2026 HL2 represents the minimum-distance encounter within the current monitoring window. At a separation of 2.956 lunar distances,
the object remains well outside Earth's gravitational capture threshold for impact scenarios under nominal orbital conditions.
Its estimated diameter of 7 metres places it within the lower end of the size-frequency distribution of near-Earth objects.
No impact solution or Earth-intersecting trajectory is indicated in the source dataset.
Potentially Hazardous Asteroids (PHA)
| Object | Date | Miss Distance (LD) | Velocity (km/s) | Size (m) | ARI |
|---|---|---|---|---|---|
| (2026 BK2) | 2026-04-22 | 9.999 | 8.13 | 265 | 50 |
| (2004 PJ2) | 2026-04-22 | 26.257 | 6.29 | 209 | 37 |
| 612786 (2004 PJ2) | 2026-04-22 | 26.257 | 6.29 | 220 | 38 |
| (2026 FH12) | 2026-04-28 | 54.155 | 14.33 | 187 | 39 |
| 434196 (2003 HG2) | 2026-04-22 | 59.514 | 10.19 | 210 | 39 |
| (2004 KB) | 2026-04-24 | 70.361 | 12.13 | 249 | 41 |
All PHAs listed meet standard classification thresholds (absolute magnitude and minimum orbit intersection distance).
However, none of the objects listed exhibit Earth-impact solutions within this monitoring window based strictly on the provided data.
Sub-10 Lunar Distance Objects
| Object | Date | Distance (LD) | Velocity (km/s) | Size (m) | ARI |
|---|---|---|---|---|---|
| (2026 HL2) | 2026-04-22 | 2.956 | 5.47 | 7 | 34 |
| (2026 HY1) | 2026-04-22 | 3.902 | 9.29 | 27 | 34 |
| (2026 GL2) | 2026-04-22 | 7.080 | 10.40 | 39 | 27 |
| (2022 UU8) | 2026-04-25 | 8.697 | 4.04 | 11 | 19 |
| (2026 HW) | 2026-04-28 | 9.534 | 11.78 | 43 | 24 |
| (2026 BK2) | 2026-04-22 | 9.999 | 8.13 | 265 | 50 |
High-Mass / Large Diameter Objects
| Object | Date | Size (m) | Distance (LD) | Velocity (km/s) |
|---|---|---|---|---|
| 54071 (2000 GQ146) | 2026-04-22 | 1418 | 61.395 | 13.36 |
| 88710 (2001 SL9) | 2026-04-26 | 1293 | 77.637 | 14.79 |
Orbital Behaviour & Distribution
All listed objects fall under the Near-Earth Object classification. No additional orbital subclass (Apollo, Aten, Amor) is explicitly provided within the supplied dataset and therefore is not inferred.
Velocity distribution across the dataset ranges from 4.04 km/s to 19.84 km/s. No anomalous velocity outliers beyond expected heliocentric encounter ranges are identified.
Planetary Defence Context
The presence of eight PHAs within the monitoring window reflects classification thresholds rather than immediate risk.
PHA designation does not imply collision probability; it indicates objects that warrant continued tracking due to size and orbit.
No deviation from predicted orbital paths is present in the dataset. All trajectories remain consistent with established solutions derived from current observational arcs.
Scientific Notes
- 1 Lunar Distance (LD) ≈ 384,400 km
- ARI is a relative internal index — not an impact probability scale
- Diameter estimates are derived from photometric models and assumed albedo ranges
- Velocity values represent relative motion with respect to Earth at closest approach
Sources
- NASA JPL CNEOS — Near-Earth Object Web Service (NeoWs)
- NASA JPL Small-Body Database (SBDB)
- Astrophyzix Risk Index Proprietary Metric