Near-Earth Object (NEO) and Potentially Hazardous Asteroid Close-Approach Report: October 5, 2026
Catalogued Earth close-approaches across a 7-day window from the NASA NeoWs feed (JPL small-body solutions; cached at source). This bulletin is a catalogue report, not a live CNEOS CAD/Scout stream. Live Multi-watch CAD/Scout/Sentry tracker.
On October 5, 2026 (UTC), screening of the NASA NeoWs catalogue resolves 45 near-Earth object close approaches across the report window. The single closest encounter is 2015 TS238, passing at approximately 4.72 lunar distances (1,813,910 km) with a relative velocity near 15.8 km/s. No listed object is on an impacting trajectory.
Close Approaches On Report Date
| Object | Epoch (UTC) | Dist (LD) | Dist (km) | v_rel (km/s) | Diameter (km) | Status |
|---|---|---|---|---|---|---|
| 2007 UW1 | 2026-Oct-05 10:14 | 32.97 | 12,677,806 | 4.7 | 0.115 | Routine |
| 2001 SH276 | 2026-Oct-05 03:48 | 54.38 | 20,913,691 | 10.8 | 0.458 | Routine |
| 2015 XX169 | 2026-Oct-05 03:10 | 89.22 | 34,312,498 | 5.3 | 0.013 | Routine |
Lead Object Orbital Dossier
2015 TS238
Heliocentric osculating elements from NeoWs, epoch JD 2461000.5. Dynamical class: APO (near-Earth asteroid orbits which cross the Earth’s orbit, similar to that of 1862 Apollo).
JPL Small-Body Database record: ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=3730801
7-Day Forward Outlook – Scroll Left/Right
| Object | Epoch (UTC) | Dist (LD) | Dist (km) | v_rel (km/s) | Diameter (km) | Status |
|---|---|---|---|---|---|---|
| 2017 SX20 | 2026-Oct-06 02:26 | 164.94 | 63,429,518 | 16.0 | 0.059 | Routine |
| 2017 EJ3 | 2026-Oct-06 06:59 | 98.96 | 38,056,500 | 6.9 | 0.090 | Routine |
| 2012 KT42 | 2026-Oct-06 07:01 | 87.82 | 33,774,141 | 11.7 | 0.006 | Routine |
| 2018 TZ1 | 2026-Oct-06 12:34 | 113.51 | 43,654,128 | 13.8 | 0.040 | Routine |
| 2010 SJ | 2026-Oct-06 17:40 | 192.67 | 74,094,317 | 19.4 | 0.069 | Routine |
| 2018 SL1 | 2026-Oct-06 19:16 | 122.09 | 46,951,512 | 12.2 | 0.024 | Routine |
| 2018 AG12 | 2026-Oct-06 20:09 | 166.79 | 64,143,759 | 8.4 | 0.072 | Routine |
| 2013 TH | 2026-Oct-07 03:38 | 50.67 | 19,486,769 | 6.9 | 0.069 | Routine |
| 2018 CH | 2026-Oct-07 04:24 | 194.03 | 74,617,494 | 19.4 | 0.021 | Routine |
| 1998 SL36 | 2026-Oct-07 04:47 | 154.97 | 59,595,365 | 22.5 | 0.359 | PHA |
| 660096 (1998 SL36) | 2026-Oct-07 04:47 | 154.97 | 59,595,365 | 22.5 | 0.358 | PHA |
| 2018 HK | 2026-Oct-07 06:54 | 69.68 | 26,795,958 | 20.4 | 0.204 | Routine |
| 2015 FD35 | 2026-Oct-07 19:14 | 70.91 | 27,269,809 | 17.4 | 0.287 | Routine |
| 2005 TQ45 | 2026-Oct-07 23:08 | 149.34 | 57,430,728 | 19.4 | 0.030 | Routine |
| 2013 HP11 | 2026-Oct-07 23:15 | 126.21 | 48,534,748 | 5.8 | 0.033 | Routine |
| 2007 TH3 | 2026-Oct-08 07:39 | 131.11 | 50,420,385 | 14.7 | 0.046 | Routine |
| 2009 UU1 | 2026-Oct-08 08:47 | 116.52 | 44,809,139 | 18.9 | 0.046 | Routine |
| 2018 HO1 | 2026-Oct-08 13:33 | 148.15 | 56,973,735 | 8.5 | 0.034 | Routine |
| 513312 (2007 DM41) | 2026-Oct-08 14:27 | 64.81 | 24,922,544 | 12.1 | 0.154 | PHA |
| 2015 TS238 | 2026-Oct-08 17:12 | 4.72 | 1,813,910 | 15.8 | 0.033 | Notable |
The window contains 45 catalogued Earth close-approaches (3 on the report date, 42 in the forward outlook). The nearest listed geometry is 2015 TS238 at 4.72 LD (non-PHA), relative velocity 15.8 km/s. 1 additional pass inside 5 LD. 5 objects in the window are flagged potentially hazardous (size and MOID criteria, not this week’s miss distance). No listed object is on an impacting trajectory in this catalogue.
Data Provenance & Methodology
Methodology
Close-approach geometry is taken from NASA NeoWs, which is fed by the Jet Propulsion Laboratory Solar System Dynamics small-body solutions that also underpin CNEOS. No local trajectory integration is performed; the report consumes NASA solutions directly to preserve the authoritative state. The analysis block is a deterministic summary of those same records.
- Source choice. JPL CNEOS CAD and SBDB (ssd-api.jpl.nasa.gov) cannot be called from a browser (NASA CORS), so this bulletin uses NeoWs (api.nasa.gov) — the same JPL small-body solutions, CORS-enabled. Live CAD/Scout/Sentry is a separate console: Multi-watch tracker.
- Time scale. NeoWs reports close-approach epochs on the UTC civil scale. For reference, the BCRS dynamical offset is TT − UTC = 69.184 s for 2026 (37 leap seconds plus the 32.184 s TAI-to-TT constant).
- Distance units. Miss distance is taken from NeoWs in astronomical units and lunar distances (1 au = 149,597,871 km, 1 LD = 384,400 km, IAU 2012).
- Size estimate. Diameter uses the NeoWs estimated_diameter bracket (derived from absolute magnitude H with standard albedo bounds); the geometric mean is reported.
- Analysis. Counts, medians and the narrative are computed from the Float64 state after validation, in the same pipeline tick as render. The analysis is never stored separately from the feed, so it cannot disagree with the tables.
- Validation. Every record is range-checked (0 < dist ≤ 1 au; 0.05 ≤ v_rel ≤ 100 km/s; −5 ≤ H ≤ 40) and a diameter-from-H constant self-test runs each build. Result: PASS (H=22 → 0.106–0.237 km); flagged records: 0.
Session provenance
Generated (UTC): 2026-10-05T00:02:55.580Z
Cache state: MISS
Analysis digest: 45 approaches (3 today / 42 outlook); closest 2015 TS238 @ 4.72 LD; PHA 5; sub-lunar 0; notable 1; median miss 121.67 LD; anomalies 0
Analysis generated (UTC): 2026-10-05T00:02:55.580Z
Source 1: NASA NeoWs feed
endpoint: https://api.nasa.gov/neo/rest/v1/feed?start_date=2026-10-05&end_date=2026-10-12&api_key=***
docs: https://api.nasa.gov/
retrieved: 2026-10-05T00:02:55.786Z
Source 2: NASA NeoWs lookup
endpoint: https://api.nasa.gov/neo/rest/v1/neo/3730801?api_key=***
docs: https://api.nasa.gov/
retrieved: 2026-10-05T00:02:57.213Z
Constants:
– AU = 149597870.7 km (IAU 2012 Resolution B2)
– Lunar distance = 384400 km (JPL/IAU nominal mean)
– Earth mean radius = 6371 km (IUGG)
– TT − UTC = 69.184 s (37 leap seconds + 32.184 s), valid 2026
– Diameter self-test: D[km] = 1329 / sqrt(pv) × 10(−H/5), pv 0.25–0.05 (Bowell)
Source note: For live CNEOS Scout and JPL Close Approach Data use the Dual-watch PHA and NEO Tracking System.
Pipeline trace: INIT@1125ms → CACHE_LOOKUP@1126ms → FETCH_FEED@1332ms → FETCH_ENRICH@2317ms → PARSE@2759ms → COMPUTE@2762ms → VALIDATE@2762ms → ANALYSE@2763ms → RENDER@2765ms
Primary references: NASA NeoWs / api.nasa.gov (api.nasa.gov), NASA CNEOS (cneos.jpl.nasa.gov). Object hazard status should be verified against the CNEOS Sentry table.
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