Near-Earth asteroid

2015 KU121

2015 KU121 is a near-Earth asteroid with an estimated diameter of 70–156 m (230–512 ft). It passes Earth on November 3, 2026 at about 64,474,219 km (167.7 lunar distances). NASA does not classify it as potentially hazardous.

Not potentially hazardous

70–156 m

Estimated diameter

22.9

Absolute magnitude (H)

Approaches within 0.2 au, 1900–2200

This week’s flyby

Closest approach: 2026-Nov-03 15:08 UTC
Miss distance: 64,474,219 km · 167.65 lunar distances · 0.43098 au
Relative speed: 18.05 km/s (40,386 mph)

Upcoming close approaches to Earth

17 approaches within 0.2 au (about 30 million km) are calculated from now to 2200. The closest in the 1900–2200 record is on June 7, 2062 at about 1,298,510 km.

Future Earth approaches (JPL Close Approach Data)
Date (TDB)	Nominal distance km	Lunar dist.	Speed km/s	Time uncertainty
2037-Jan-06 02:00	26,978,480	70.2	14.08	00:19
2043-Jun-04 15:03	10,049,985	26.1	18.64	00:09
2056-Jan-15 00:29	22,539,911	58.6	17.11	00:02
2062-Jun-07 06:16	1,298,510	3.38	16.58	00:04
2071-May-31 15:25	24,686,641	64.2	21.42	00:53
2084-Jan-19 23:06	27,268,700	70.9	19.71	02:45
2090-Jun-11 20:55	29,699,665	77.3	11.8	00:15
2093-Jan-07 14:21	25,469,037	66.3	14.54	04:55
2099-Jun-08 03:10	3,342,016	8.69	16.19	02:20
2108-Jun-04 03:33	13,552,071	35.3	19.29	05:47
2130-Jan-20 22:24	27,856,620	72.5	19.89	23:54
2139-Jan-13 10:49	22,596,758	58.8	16.11	1_05:48
2145-Jun-11 04:38	14,603,744	38.0	14.19	07:53
2154-Jun-06 10:25	7,376,671	19.2	18.13	00:59
2176-Jan-14 18:12	22,536,919	58.6	16.44	1_11:24
2182-Jun-10 18:33	10,723,175	27.9	14.84	22:27
2191-Jun-04 14:07	16,026,420	41.7	19.73	1_02:13

Recent past approaches

Past Earth approaches within 0.2 au since 1900 (JPL), most recent 13
Date (TDB)	Distance km	Lunar dist.	Speed km/s
2015-Jun-07 18:34	2,872,279	7.47	16.28
2009-Jan-16 00:58	23,413,563	60.9	18
1996-Jun-07 09:25	4,670,446	12.1	15.95
1990-Jan-19 10:45	27,111,622	70.5	19.61
1977-Jun-10 21:12	22,408,265	58.3	12.92
1967-Jun-01 10:44	20,643,010	53.7	20.66
1961-Jan-08 00:33	25,096,539	65.3	14.69
1948-Jun-03 06:43	11,155,513	29.0	18.86
1942-Jan-10 01:11	23,501,825	61.1	15.38
1929-Jun-03 14:30	10,441,931	27.2	18.73
1923-Jan-09 06:46	24,097,225	62.7	15.06
1910-Jun-02 03:55	16,292,704	42.4	19.84
1904-Jan-06 04:56	27,008,400	70.3	14.04

← All asteroids passing Earth this week

Sources

Size, hazard status and this week’s approach — NASA NeoWs (copy taken Oct 28, 2026, 2:39 AM EDT)
Close-approach list — JPL SBDB Close Approach Data API (copy taken Oct 28, 2026, 2:39 AM EDT)
Full orbit details — JPL Small-Body Database: 2015 KU121

Distances are nominal predictions and can change with new observations. OpenOrbit is not affiliated with or endorsed by NASA or JPL.