Astrophyzix Observatory PHA & NEO Asteroid News
Daily Asteroid Bulletin · NASA NeoWs catalogue · UTC
Near-Earth Object (NEO) and PHA Asteroid Close-Approach Report: October 3, 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 3, 2026 (UTC), screening of the NASA NeoWs catalogue resolves 41 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.
Closest catalogued approach in observation window
2015 TS238
4.72 LD
1,813,910 km · 0.012125 au · v_rel 15.81 km/s
Encounter (UTC)
2026-Oct-08 17:12
Est. diameter
0.033 km (NeoWs)
Diameter range
0.022 – 0.049 km
Earth radii
285 R(E)
Close approaches on report date
| Object | Epoch (UTC) | Dist (LD) | Dist (km) | v_rel | Diameter | Status |
|---|---|---|---|---|---|---|
| 2019 SW5 | 2026-Oct-03 12:00 | 39.56 | 15,214,652 | 17.2 | 0.037 | Routine |
| 2006 HZ5 | 2026-Oct-03 16:31 | 150.71 | 57,958,790 | 6.9 | 0.050 | 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).
Semi-major axis a
1.1434 au
Eccentricity e
0.4994
Inclination i
3.324 deg
Orbital period
1.223 yr
Asc. node Ω
190.989 deg
Arg. perihelion ω
78.226 deg
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 | Diameter | Status |
|---|---|---|---|---|---|---|
| 2009 UD | 2026-Oct-04 07:03 | 122.78 | 47,218,840 | 12.7 | 0.014 | Routine |
| 2019 UM8 | 2026-Oct-04 11:49 | 161.15 | 61,974,605 | 18.2 | 0.008 | Routine |
| 2017 WK15 | 2026-Oct-04 20:07 | 170.38 | 65,522,606 | 17.0 | 0.018 | Routine |
| 2015 XX169 | 2026-Oct-05 03:10 | 89.22 | 34,312,498 | 5.3 | 0.013 | Routine |
| 2001 SH276 | 2026-Oct-05 03:48 | 54.38 | 20,913,691 | 10.8 | 0.458 | Routine |
| 2007 UW1 | 2026-Oct-05 10:14 | 32.97 | 12,677,806 | 4.7 | 0.115 | Routine |
| 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 |
Astrophyzix analysis · same clock as the feed
The window contains 41 catalogued Earth close-approaches (2 on the report date, 39 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. 4 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.
Approaches in window
41
On report date
2
PHA in window
4
Inside 1 LD
0
Inside 5 LD
1
Median miss
121.67 LD
Fastest v_rel
25.8 km/s
Closest object
2015 TS238
Methodology
Data are reproducible using the Astrophyzix Orbital Refinement System.
Methodology documents
-
Daily NEO Reporting Methodology
DOI: 10.5281/zenodo.22868834 -
Orbital Refinement System & Orbital Viewer Documentation
DOI: 10.5281/zenodo.23049067
Data provenance
Generated (UTC): 2026-10-03T00:20:11.914Z
Cache state: HIT (age 0 min)
Analysis digest: 41 approaches (2 today / 39 outlook); closest 2015 TS238 @ 4.72 LD; PHA 4; sub-lunar 0; notable 1; median miss 121.67 LD; anomalies 0
Analysis generated (UTC): 2026-10-03T00:20:11.914Z
Source 1: NASA NeoWs feed
endpoint: https://api.nasa.gov/neo/rest/v1/feed?start_date=2026-10-03&end_date=2026-10-10&api_key=***
docs: https://api.nasa.gov/
retrieved: 2026-10-03T00:19:45.013Z
Source 2: NASA NeoWs lookup
endpoint: https://api.nasa.gov/neo/rest/v1/neo/3730801?api_key=***
docs: https://api.nasa.gov/
retrieved: 2026-10-03T00:19:47.050Z
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: astrophyzix.com/p/live-asteroid-tracker-v9.html
Pipeline trace: INIT@627ms → CACHE_LOOKUP@628ms → PARSE@901ms → COMPUTE@902ms → VALIDATE@902ms → ANALYSE@903ms → RENDER@903ms
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.