Near-Earth asteroid

2135 Aristaeus (1977 HA)

2135 Aristaeus (1977 HA) is a near-Earth asteroid with an estimated diameter of 0.7–1.5 km (0.4–0.9 mi), in the APO orbit class. Its next listed approach within 0.2 au is on March 26, 2062. NASA classifies it as potentially hazardous.

Potentially hazardous

0.7–1.5 km

Estimated diameter

18.05

Absolute magnitude (H)

Approaches within 0.2 au, 1900–2200

Upcoming close approaches to Earth

5 approaches within 0.2 au (about 30 million km) are calculated from now to 2200. The closest in the 1900–2200 record is on March 30, 2147 at about 4,447,545 km.

Future Earth approaches (JPL Close Approach Data)
Date (TDB)	Nominal distance km	Lunar dist.	Speed km/s	Time uncertainty
2062-Mar-26 02:03	12,697,867	33.0	15.97	00:09
2064-Apr-02 19:51	8,172,532	21.3	18.76	00:07
2145-Mar-19 22:13	26,243,954	68.3	14.53	01:41
2147-Mar-30 17:28	4,447,545	11.6	17.03	01:12
2149-Apr-06 08:34	14,373,363	37.4	19.68	00:22

Orbit

Orbit class: APO — Near-Earth asteroid orbits which cross the Earth’s orbit similar to that of 1862 Apollo
Orbital period: 739.0 days (2.02 years)
Minimum orbit intersection distance: 0.00967 au (1,446,611 km)
Observed: April 17, 1977 to May 30, 2020

Recent past approaches

Past Earth approaches within 0.2 au since 1900 (JPL), most recent 3
Date (TDB)	Distance km	Lunar dist.	Speed km/s
1979-Apr-09 20:22	25,838,544	67.2	21.5
1977-Apr-01 17:43	4,811,068	12.5	18.25
1975-Mar-25 23:20	13,786,940	35.9	15.82

← 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: 2135 Aristaeus (1977 HA)

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