This page serves as a practical, comprehensive list of asteroids discovered before entering Earth's atmosphere. Direct links to primary records for each object are provided, including MPC MPECs, MPC object pages, JPL SBDB lookups, and NEODyS NEOScan past-impactor pages.
All times are presented in Coordinated Universal Time (UTC). The 'warning time' is calculated by subtracting the discovery time from the impact time. Impact coordinates are approximate and typically based on observed fireball or entry locations.

Table

Object	Impact (UTC)	Discovery (UTC)	Warning (h)	Impact location	H	Obs	Discovery Station	Primary links
2024 XA1	2024-12-03 16:15:00	2024-12-03 05:55:16	10.33	60.9° N, 119.5° E	32.955	79	V00	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=1.69644 AU; e=0.49770; i=0.108°; q=0.85213 AU; Q=2.54075 AU
2024 UQ	2024-10-22 10:54:00	2024-10-22 09:08:31	1.76	30.0° N, 136.0° W	32.656	9	T05	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=2.17597 AU; e=0.726998; i=1.714°; q=0.594045 AU; Q=3.75789 AU
2024 RW1	2024-09-04 16:39:33	2024-09-04 05:43:41	10.93	18.0° N, 122.9° E	32.195	185	G96	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=2.50729 AU; e=0.706799; i=0.528°; q=0.735142 AU; Q=4.27945 AU
2024 BX1	2024-01-21 00:32:44	2024-01-20 21:48:27	2.74	52.6° N, 12.6° E	32.710	328	K88	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=1.33646 AU; e=0.375471; i=7.293°; q=0.834655 AU; Q=1.83826 AU
2023 CX1	2023-02-13 02:59:22	2023-02-12 20:18:07	6.69	49.8° N, 0.4° E	32.717	368	K88	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=1.68545 AU; e=0.455180; i=3.565°; q=0.918268 AU; Q=2.45264 AU
2022 WJ1	2022-11-19 08:26:58	2022-11-19 04:53:00	3.57	43.0° N, 81.7° W	33.584	51	G96	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=1.90476 AU; e=0.513147; i=2.618°; q=0.927338 AU; Q=2.88218 AU
2022 EB5	2022-03-11 21:22:47	2022-03-11 19:24:12	1.98	70.0° N, 9.1° E	31.327	177	K88	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=2.81947 AU; e=0.685140; i=10.409°; q=0.887738 AU; Q=4.75119 AU
2019 MO	2019-06-22 21:30:25	2019-06-22 09:49:01	11.69	14.9° N, 66.2° W	29.339	7	T08	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=8.20089 AU; e=0.876296; i=2.370°; q=1.01449 AU; Q=15.3873 AU
2018 LA	2018-06-02 16:45:30	2018-06-02 08:14:21	8.52	21.3° S, 23.3° E	30.484	15	G96	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=1.37510 AU; e=0.431182; i=4.294°; q=0.782182 AU; Q=1.96802 AU
2014 AA	2014-01-02 02:24:24	2014-01-01 06:18:06	20.10	13.1° N, 44.2° W	30.944	7	G96	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=0.867155 AU; e=0.197423; i=1.335°; q=0.695959 AU; Q=1.03835 AU
2008 TC3	2008-10-07 02:46:00	2008-10-06 06:39:50	20.10	20.9° N, 31.8° E	30.311	883	G96	MPC MPEC MPC object JPL SBDB NEOScan NEODyS-2 ESA Orbit (a,e,i,q,Q) a=0.769805 AU; e=0.337537; i=0.499°; q=0.509968 AU; Q=1.02964 AU

Discovery Station Codes

G96 — Mt. Lemmon Survey (Catalina Sky Survey, Arizona, USA)
T05 — ATLAS-HKO (Haleakala Observatory, Hawaii, USA)
T08 — ATLAS-MLO (Mauna Loa Observatory, Hawaii, USA)
K88 — GINOP-KHK (Hungarian automated survey system)
V00 — Kitt Peak–Bok Telescope (Arizona, USA)

Definitions

A pre-impact detection refers to the discovery of an object by telescopic survey prior to its entry into Earth's atmosphere.
Discovery time (UTC) is the timestamp when the discovery was reported in the compiled dataset.
Impact time (UTC) represents the estimated moment when the object entered the atmosphere or impacted, as recorded in the compiled dataset.
Warning time (hours) is calculated by subtracting the discovery time from the impact time; however, this does not necessarily indicate when the public was informed.
Impact latitude and longitude indicate the approximate region of atmospheric entry, typically derived from observational reconstructions.

Sources & methodology

MPC:MPEC circular links are provided for each object; MPC object records are linked to offer contextual information.
MPC Explorer: MPC Explorer list Past Impactors
JPL SBDB: SBDB Lookup links provide orbital/physical context as available.
JPL Center for NEO Studies (CNEOS): Pre-Impact Detections
NEODyS: Past Impactors.
NEOScan: Past Impactors.
ESA Near-Earth Objects Coordination Centre: Past Impactors table.

This table was compiled using the MPC past-impactors list. Fields include impact time and location, discovery time, station code, number of observations, absolute magnitude (H), and orbital elements. The information was cross-referenced with NEODyS NEOScan 'Past Impactors' documentation.