Near-Earth asteroid

1620 Geographos (1951 RA)

1620 Geographos (1951 RA) is a near-Earth asteroid with an estimated diameter of 2.3–5.2 km (1.5–3.3 mi), in the APO orbit class. Its next listed approach within 0.2 au is on March 12, 2040. NASA classifies it as potentially hazardous.

Potentially hazardous

2.3–5.2 km

Estimated diameter

15.27

Absolute magnitude (H)

Approaches within 0.2 au, 1900–2200

Upcoming close approaches to Earth

15 approaches within 0.2 au (about 30 million km) are calculated from now to 2200. The closest in the 1900–2200 record is on August 25, 1994 at about 4,981,609 km.

Future Earth approaches (JPL Close Approach Data)
Date (TDB)	Nominal distance km	Lunar dist.	Speed km/s	Time uncertainty
2040-Mar-12 10:58	17,000,302	44.2	13.74	< 00:01
2051-Aug-23 03:35	7,162,746	18.6	11.01	< 00:01
2065-Mar-13 19:56	14,451,154	37.6	12.95	< 00:01
2076-Aug-20 09:35	11,723,985	30.5	10.22	< 00:01
2090-Mar-11 06:39	22,560,855	58.7	15.01	< 00:01
2094-Sep-03 10:34	28,426,587	74.0	16.69	< 00:01
2101-Aug-07 02:26	29,626,362	77.1	8.01	< 00:01
2108-Mar-18 23:57	20,879,375	54.3	9.39	< 00:01
2119-Aug-27 16:11	5,029,480	13.1	12.39	< 00:01
2133-Mar-18 05:51	15,048,050	39.1	10.69	< 00:01
2144-Aug-29 08:08	10,551,138	27.4	13.52	< 00:01
2158-Mar-20 02:29	26,193,091	68.1	8.65	< 00:01
2165-Mar-11 12:24	26,984,464	70.2	15.88	< 00:01
2176-Aug-20 12:13	14,006,849	36.4	9.87	< 00:01
2190-Mar-16 04:16	14,445,170	37.6	12.72	< 00:01

Orbit

Orbit class: APO — Near-Earth asteroid orbits which cross the Earth’s orbit similar to that of 1862 Apollo
Orbital period: 507.9 days (1.39 years)
Minimum orbit intersection distance: 0.02953 au (4,417,625 km)
Observed: September 14, 1951 to October 24, 2026

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
2026-Aug-12 08:35	25,497,461	66.3	8.36
2019-Aug-31 17:20	20,533,804	53.4	15.28
2008-Mar-17 11:41	18,714,694	48.7	9.74
1994-Aug-25 10:10	4,981,609	13.0	12.22
1983-Mar-16 10:22	13,383,026	34.8	11.06
1969-Aug-27 00:06	9,065,631	23.6	13.18
1958-Mar-18 04:43	22,664,077	59.0	9.06
1951-Aug-08 15:38	28,969,628	75.4	8
1944-Sep-02 03:37	28,668,936	74.6	16.74
1940-Mar-09 21:19	21,995,375	57.2	14.99
1926-Aug-21 06:24	9,945,266	25.9	10.56
1915-Mar-14 16:15	12,207,186	31.8	12.11
1901-Aug-23 17:36	5,071,368	13.2	11.76

← 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: 1620 Geographos (1951 RA)

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