2026 SD3
2026 SD3
Current distance from Earth
2,649,135km
6.9 lunar distances0.018 AU
Heliocentric orbit · top-down · live
Next close approach
2026-Sep-21
Passes 5.3 lunar distances from Earth — about 2,054,571 km, closing at 18.4 km/s.
Orbit class
APO
around the Sun
Orbital period
1.22 yr
445 days
Diameter
26 m
about the size of a house
Eccentricity
0.248
orbit shape
Inclination
32.7°
to the ecliptic
Discovered
—
Size in perspective
2.4×2026 SD3 is 2.4× the size of a double-decker bus.
Observe it tonight
Apparent brightness
mag 25.3
Too faint to observe
Right ascension
21h 52m
Declination
+0° 11′
From your location
tap to check ›
2026 SD3 is currently faint (magnitude 25.3) — it brightens around close approaches. Position is in equatorial coordinates (J2000); pair it with our sky conditions to plan a session.
Frequently asked questions
How close does 2026 SD3 come to Earth?
Its next notable close approach is on 2026-Sep-21, when it passes about 5.3 lunar distances from Earth — roughly 2,054,571 km. 2026 SD3 is currently about 7 lunar distances away — the live orbit and distance are shown above.
Is 2026 SD3 going to hit Earth?
No impact is predicted. 2026 SD3 is not on any impact-risk watchlist. Its trajectory is continuously refined as new observations are gathered, and predicted close approaches are calculated decades ahead. Its live position and orbit are shown above.
How big is 2026 SD3?
2026 SD3 is estimated at about 26 m across — about the size of a house. Size estimates are derived from how bright the asteroid appears and refined by radar and thermal measurements when it passes close to Earth.
What kind of orbit does 2026 SD3 have?
2026 SD3 is APO object. It orbits the Sun once every 1.22 years, on an elliptical path that reaches beyond Earth’s orbit and swings back toward the Sun. The interactive orbit diagram above shows where it is right now.
Can I see 2026 SD3 through a telescope?
Most of the time 2026 SD3 is far too faint to see, but during a close approach it can brighten enough for amateur telescopes. Check the close-approach date above, then plan your night with our sky and space-weather tools.
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