Near-Earth Object (NEO) and PHA Close-Approach Report: September 22, 2026 Official NASA NeoWs Sourced Data by Astrophyzix Digital Observatory

 Astrophyzix Observatory PHA & NEO Asteroid News

Daily Asteroid Bulletin · NASA NeoWs catalogue · UTC

Near-Earth Object (NEO) Asteroid Close-Approach Report: September 22, 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 September 22, 2026 (UTC), screening of the NASA NeoWs catalogue resolves 40 near-Earth object close approaches across the report window. The single closest encounter is 138971 (2001 CB21, passing at approximately 21.05 lunar distances (8,096,702 km) with a relative velocity near 10.2 km/s. No listed object is on an impacting trajectory.

CLOSEST CATALOGUED APPROACH IN OBSERVATION WINDOW

138971 (2001 CB21 PHA

21.05 LD

8,096,702 km · 0.054123 au · v_rel 10.23 km/s

EARTH SURFACE19.5 LD (FILTER EDGE)

Encounter (UTC)

2026-Sep-29 07:18

Est. diameter

0.779 km (NeoWs)

Diameter range

0.521 - 1.164 km

Earth radii

1,271 R(E)

Close Approaches On Report Date

Object	Epoch (UTC)	Dist (LD)	Dist (km)	v_rel	Diameter	Status
2017 RP15	2026-Sep-22 04:45	56.91	21,886,909	9.1	0.020	ROUTINE
2018 PL23	2026-Sep-22 02:11	68.33	26,278,603	22.3	0.422	PHA
719194 (2018 PL23	2026-Sep-22 02:11	68.33	26,278,603	22.3	0.422	PHA
2019 RX	2026-Sep-22 03:28	68.90	26,495,838	6.5	0.054	ROUTINE
2004 LA6	2026-Sep-22 08:19	141.72	54,500,983	9.3	0.173	ROUTINE
2018 RL6	2026-Sep-22 15:07	163.66	62,938,834	17.9	0.079	ROUTINE

Lead Object Orbital Dossier

138971 (2001 CB21

Heliocentric osculating elements from NeoWs, epoch JD 2461200.5. Dynamical class: APO (Near-Earth asteroid orbits which cross the Earth’s orbit similar to that of 1862 Apollo).

Semi-major axis a

1.0336 au

Eccentricity e

0.3333

Inclination i

7.919 deg

Orbital period

1.051 yr

Asc. node OM

353.639 deg

Arg. perihelion w

271.954 deg

JPL Small-Body Database record: https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2138971

7-Day Forward Outlook - Scroll Left/Right

Object	Epoch (UTC)	Dist (LD)	Dist (km)	v_rel	Diameter	Status
2012 VB37	2026-Sep-23 04:08	26.80	10,304,606	6.3	0.032	ROUTINE
2016 SE	2026-Sep-23 05:10	73.14	28,128,969	8.9	0.027	ROUTINE
2015 KT120	2026-Sep-23 10:12	123.10	47,340,691	13.1	0.038	ROUTINE
2013 ES11	2026-Sep-23 14:51	134.55	51,742,444	20.4	0.072	ROUTINE
2004 FH	2026-Sep-23 17:58	155.18	59,678,378	13.0	0.021	ROUTINE
2008 CO116	2026-Sep-23 19:23	189.67	72,943,128	21.9	0.239	ROUTINE
2015 SY16	2026-Sep-24 04:31	192.03	73,848,077	30.5	0.192	PHA
2006 TL	2026-Sep-24 08:32	106.00	40,765,882	9.8	0.066	ROUTINE
2019 VW2	2026-Sep-24 12:39	115.78	44,525,498	14.4	0.115	ROUTINE
2011 TB4	2026-Sep-24 21:17	114.75	44,130,095	21.9	0.033	ROUTINE
2016 LY8	2026-Sep-25 12:12	34.17	13,142,327	7.3	0.098	ROUTINE
2018 HN	2026-Sep-25 14:23	43.20	16,612,224	11.8	0.040	ROUTINE
2018 KS	2026-Sep-25 16:03	88.88	34,180,550	6.9	0.010	ROUTINE
376848 (2001 RY47	2026-Sep-26 00:32	51.29	19,724,643	12.1	0.476	ROUTINE
2019 QY1	2026-Sep-26 02:49	192.77	74,134,163	20.0	0.279	PHA
2005 SP9	2026-Sep-26 09:37	147.43	56,699,115	16.5	0.189	ROUTINE
2001 SY169	2026-Sep-26 10:58	182.86	70,322,608	25.9	0.095	ROUTINE
2013 ET	2026-Sep-26 11:01	182.88	70,330,128	25.9	0.095	ROUTINE
2018 SD1	2026-Sep-26 14:58	93.16	35,828,310	22.8	0.048	ROUTINE
2015 HA10	2026-Sep-26 21:33	101.02	38,850,386	15.5	0.300	ROUTINE

Automated analysis · same clock as the feed

The window contains 40 catalogued Earth close-approaches (6 on the report date, 34 in the forward outlook). The nearest listed geometry is 138971 (2001 CB21 at 21.05 LD (PHA), relative velocity 10.2 km/s. 8 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

40

On report date

6

PHA in window

8

Inside 1 LD

0

Inside 5 LD

0

Median miss

102.99 LD

Fastest v_rel

30.5 km/s

Closest object

138971 (2001 CB21

Methodology

Data Provenance

Module: Astrophyzix-NEO-Daily/2.2.0
Generated (UTC): 2026-09-22T00:28:05.131Z
Cache state: MISS
Analysis digest: 40 approaches (6 today / 34 outlook); closest 138971 (2001 CB21 @ 21.05 LD; PHA 8; sub-lunar 0; notable 0; median miss 102.99 LD; anomalies 0
Analysis generated (UTC): 2026-09-22T00:28:05.131Z
Source 1: NASA NeoWs feed
  endpoint: https://api.nasa.gov/neo/rest/v1/feed?start_date=2026-09-22&end_date=2026-09-29&api_key=***
  docs: https://api.nasa.gov/
  retrieved: 2026-09-22T00:28:05.340Z
Source 2: NASA NeoWs lookup
  endpoint: https://api.nasa.gov/neo/rest/v1/neo/2138971?api_key=***
  docs: https://api.nasa.gov/
  retrieved: 2026-09-22T00:28:06.893Z
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: https://www.astrophyzix.org/p/cneo-observatory.html
Pipeline trace: INIT@1394ms -> CACHE_LOOKUP@1396ms -> FETCH_FEED@1604ms -> FETCH_ENRICH@2727ms -> PARSE@3157ms -> COMPUTE@3161ms -> VALIDATE@3161ms -> ANALYSE@3161ms -> RENDER@3162ms

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.

Astrophyzix Observatory. (2026). Astrophyzix Risk Index - A Heuristic Scoring System for Near-Earth Object Close Approach Visualisation (Version 2.0). Zenodo. https://doi.org/10.5281/zenodo.22240223