PHA NEO Asteroid Near-Earth Object Close-Approach Report: June 17, 2026 - Official NASA CAD & NeoWs Data

ASTROPHYZIX // PLANETARY Defence Asteroid News

Near-Earth Object Close-Approach Report: June 17, 2026

Near-Earth object encounters catalogued across a 7-day window, reported on the UTC civil time scale. NO IMPACT THREAT REPORTED 

On June 17, 2026,  screening of the NASA NeoWs catalogue resolves 37 near-Earth object close approaches across the report window. The single closest encounter reported by NASA NEOWS is 2003 LN6, passing at approximately 3.68 lunar distances (1,417,040 km) with a relative velocity near 3.9 km/s. Its order-of-magnitude kinetic energy, for scale only, is near 0 Mt TNT equivalent; no listed object is on an impacting trajectory. Screening of Live NASA JPL CAD shows only routine safe approaches. The next closest encounter reported by NASA CAD is 2026 LO1 at just over 14 lunar distances as shown below with five objects which are approaching shortly after.  A seven day outlook from NASA’s NeoWs is included for comprehensive coverage from both NASA data sets. 

Next Asteroid Close Approaches (NASA CAD Data - Live at time of writing) 

(2026 LO1)JPL CAD

2026-06-17 01:09 TDB

Safe

Miss Distance

14.090 LD

Velocity

7.47 km/s

Est. Size (H-derived)

40 m

Abs. Mag (H)

24.8

Distance Band

3-sig band: 0.03615 - 0.03625 AU

Time Uncertainty

CA time unc.: < 00:01

ARI (Astrophyzix Risk Index)

16

(2018 KH1)JPL CAD

2026-06-17 07:35 TDB

Safe

Miss Distance

73.008 LD

Velocity

13.38 km/s

Est. Size (H-derived)

145 m

Abs. Mag (H)

21.9

Distance Band

3-sig band: 0.18760 - 0.18760 AU

Time Uncertainty

CA time unc.: < 00:01

ARI (Astrophyzix Risk Index)

19

(2021 JZ1)JPL CAD

2026-06-17 07:47 TDB

Safe

Miss Distance

76.363 LD

Velocity

8.56 km/s

Est. Size (H-derived)

52 m

Abs. Mag (H)

24.2

Distance Band

3-sig band: 0.16086 - 0.23251 AU

Time Uncertainty

CA time unc.: 4_00:13

ARI (Astrophyzix Risk Index)

12

(2026 LD2)JPL CAD

2026-06-18 08:20 TDB

Safe

Miss Distance

8.702 LD

Velocity

8.04 km/s

Est. Size (H-derived)

18 m

Abs. Mag (H)

26.5

Distance Band

3-sig band: 0.02227 - 0.02245 AU

Time Uncertainty

CA time unc.: < 00:01

ARI (Astrophyzix Risk Index)

22

(2002 WX12)JPL CAD

2026-06-18 12:14 TDB

Safe

Miss Distance

53.981 LD

Velocity

18.53 km/s

Est. Size (H-derived)

349 m

Abs. Mag (H)

20.0

Distance Band

3-sig band: 0.13871 - 0.13871 AU

Time Uncertainty

CA time unc.: < 00:01

ARI (Astrophyzix Risk Index)

30

(2026 MA)JPL CAD

2026-06-18 18:06 TDB

Safe

Miss Distance

5.163 LD

Velocity

8.75 km/s

Est. Size (H-derived)

15 m

Abs. Mag (H)

26.9

Distance Band

3-sig band: 0.01324 - 0.01330 AU

Time Uncertainty

CA time unc.: < 00:01

ARI (Astrophyzix Risk Index)

30

Live Nasa CAD Data Provenance: relay=allorigins-get / allorigins-get | CAD v1.5 | Scout v1.3 | source=CAD + SCOUT | fetched=Wed, 17 Jun 2026 23:04:01 UTC | window(TDB)=2026-06-17..2026-06-23 | dist-max=0.2056AU | validation=PASS

7-Day Forward Outlook (NASA Horizons and NeoWs Cached data) 

Object	Epoch (UTC)	Dist (LD)	Dist (km)	v_rel	Diameter	Status
2011 ET74	2026-Jun-18 01:05	148.16	56,976,627	6.9	0.023	ROUTINE
2018 WS	2026-Jun-18 02:30	126.46	48,633,599	5.0	0.020	ROUTINE
2013 NG10	2026-Jun-18 11:07	138.92	53,425,589	11.2	0.115	ROUTINE
2002 WX12	2026-Jun-18 12:14	53.96	20,750,421	18.5	0.390	ROUTINE
2014 QZ295	2026-Jun-18 19:56	90.74	34,894,134	7.4	0.044	ROUTINE
2003 LN6	2026-Jun-18 20:54	3.68	1,417,040	3.9	0.045	NOTABLE
17182 (1999 VU	2026-Jun-19 07:54	68.52	26,351,461	13.8	1.490	ROUTINE
2019 UG2	2026-Jun-19 18:55	165.95	63,821,319	11.9	0.055	ROUTINE
2001 MY7	2026-Jun-19 20:56	76.32	29,349,367	17.5	0.175	ROUTINE
2020 AP3	2026-Jun-20 00:31	85.60	32,918,736	5.6	0.019	ROUTINE
2014 WA201	2026-Jun-20 22:51	52.65	20,247,474	14.9	0.017	ROUTINE
2019 NJ5	2026-Jun-20 23:45	184.47	70,941,539	5.2	0.089	ROUTINE
2008 JL24	2026-Jun-21 00:21	36.19	13,918,263	2.0	0.005	ROUTINE
2020 BT3	2026-Jun-21 11:33	157.53	60,582,124	15.0	0.031	ROUTINE
470310 (2007 LB15	2026-Jun-21 19:53	81.18	31,218,106	21.5	0.476	PHA
2015 GF27	2026-Jun-21 20:38	117.51	45,191,105	5.3	0.808	ROUTINE
2016 CN248	2026-Jun-21 20:39	165.61	63,690,493	16.7	0.014	ROUTINE
2017 AY3	2026-Jun-21 22:39	39.78	15,298,790	14.6	0.295	ROUTINE
2017 FL91	2026-Jun-22 02:51	191.60	73,685,455	3.0	0.241	ROUTINE
2016 LC9	2026-Jun-22 08:09	24.57	9,447,842	3.4	0

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.

• Source choice. The JPL CNEOS CAD and SBDB endpoints (ssd-api.jpl.nasa.gov) cannot be embedded in a website per NASA CORS policy, so NeoWs (api.nasa.gov) is used: it carries the same underlying JPL small-body data and is CORS enabled.
• 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.
• Energy context. Impact-energy figures are order-of-magnitude only: KE = 0.5 m v^2 with mass from the estimated diameter and an assumed bulk density of 2600 kg/m^3. They quantify scale, not risk - no listed object is on an impact trajectory.
• 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.

Data Provenance

Modules Used: Astrophyzix-NEO-Daily/2.0.0 / Astrophyzix Dual-watch CAD and Scout Monitoring System V8.0
Data date and time (UTC): 2026-06-17T22:52:37.725Z
Cache state: Miss (verified fresh API call) 
Sources: NASA NeoWs, JPL CAD
  endpoint: https://api.nasa.gov/neo/rest/v1/feed?start_date=2026-06-17&end_date=2026-06-24&api_key=***
  docs: https://api.nasa.gov/
  retrieved: 2026-06-17T22:52:37.858Z
Source 2: NASA NeoWs lookup
  endpoint: https://api.nasa.gov/neo/rest/v1/neo/3156302?api_key=***
  docs: https://api.nasa.gov/
  retrieved: 2026-06-17T22:52:39.753Z
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)
  - Impact-energy estimate: KE = 0.5 m v^2, m from D and rho = 2600 kg/m^3; 1 Mt = 4.184e15 J
Source note: JPL ssd-api (CNEOS CAD / SBDB) is intentionally called for the live upcoming close approaches because NASA NeoWs Data may be delayed or lag. This is due to NASA update frequency and not a flaw in our system. To remedy this, we provide both official sets of API data to ensure you receive the most comprehensive information. 

✅ NASA NeoWs DATA Provenance INIT@3906ms -> CACHE_LOOKUP@3907ms -> FETCH_FEED@4040ms -> FETCH_ENRICH@5355ms -> PARSE@5936ms -> COMPUTE@5937ms -> VALIDATE@5937ms -> RENDER@5937ms

✅ Live NASA CAD DATA Provenance: relay=allorigins-get / allorigins-get | CAD v1.5 | Scout v1.3 | source=CAD + SCOUT | fetched=Wed, 17 Jun 2026 23:04:01 UTC | window(TDB)=2026-06-17..2026-06-23 | dist-max=0.2056AU | validation=PASS

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.