| Time of discovery of asteroids which came closer to Earth than the Moon in 2020
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- After closest approach: 64 (60.4%)
- < 24 hours before: 14 (13.2%)
- up to 7 days before: 26 (24.5%)
- > one week before: 2 (1.9%)
- > 7 weeks before: 0 (0.0%)
- > one year before: 0 (0.0%)
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| Asteroid discoverers by count
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- Mount Lemmon Survey (G96): 42 (39.6%)
- Pan-STARRS 1 (F51): 16 (15.1%)
- Catalina Sky Survey (703): 13 (12.3%)
- ATLAS-MLO (T08): 11 (10.4%)
- ATLAS-HKO (T05): 6 (5.7%)
- Tokyo-Kiso (381): 5 (4.7%)
- Pan-STARRS 2 (F52): 5 (4.7%)
- Zwicky Transient facility (I41): 5 (4.7%)
- Purple Mountain Observatory (D29): 2 (1.9%)
- L. Buzzi (no code): 1 (0.9%)
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| Prediction accuracy for asteroids of magnitude 27 or larger predicted to pass within 1 lunar distance of Earth in 2020[note 1]
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- Unpredicted: 22 (100.0%)
- Predicted but not observed: 0 (0.0%)
- Observed but details incorrect: 0 (0.0%)
- Distance correct but not date: 0 (0.0%)
- Date correct but not distance: 0 (0.0%)
- Successfully predicted: 0 (0.0%)
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Below is the list of asteroid close approaches to Earth in 2020.
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