Near-Earth asteroid

1863 Antinous (1948 EA)

1863 Antinous (1948 EA) is a near-Earth asteroid with an estimated diameter of 2.3–5.1 km (1.4–3.2 mi), in the APO orbit class. Its next listed approach within 0.2 au is on August 13, 2094. NASA does not classify it as potentially hazardous.

Not potentially hazardous

2.3–5.1 km

Estimated diameter

15.32

Absolute magnitude (H)

Approaches within 0.2 au, 1900–2200

Upcoming close approaches to Earth

1 approaches within 0.2 au (about 30 million km) are calculated from now to 2200. The closest in the 1900–2200 record is on April 6, 1931 at about 26,062,941 km.

Future Earth approaches (JPL Close Approach Data)
Date (TDB)	Nominal distance km	Lunar dist.	Speed km/s	Time uncertainty
2094-Aug-13 08:54	28,891,837	75.2	18.04	< 00:01

Orbit

Orbit class: APO — Near-Earth asteroid orbits which cross the Earth’s orbit similar to that of 1862 Apollo
Orbital period: 1,240.5 days (3.40 years)
Minimum orbit intersection distance: 0.18805 au (28,131,880 km)
Observed: March 5, 1948 to October 24, 2026

Recent past approaches

Past Earth approaches within 0.2 au since 1900 (JPL), most recent 5
Date (TDB)	Distance km	Lunar dist.	Speed km/s
1999-Apr-01 14:44	28,335,333	73.7	17.86
1982-Apr-05 22:46	27,231,300	70.8	15.45
1965-Apr-06 03:08	26,875,257	69.9	15.3
1948-Apr-05 23:14	26,459,375	68.8	15.4
1931-Apr-06 05:10	26,062,941	67.8	15.64

← 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: 1863 Antinous (1948 EA)

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