NEO Earth Close Approaches Asteroids Near Me

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April 12, 2020

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The following counter shows close approaches to the Earth by near-Earth objects (NEOs) limited when selected in the “Table Settings” below. Data are not available prior to 1900 A.D nor at the end of 2200 A.D. Data are further limited to encounters with .

Object	Close-Approach (CA) Date	CA Distance Nominal (LD | au)	CA Distance Minimum (LD | au)	V relative (km/s)	V infinity (km/s)	H (mag)	Estimated Diameter

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Machine-readable data are available. See the appropriate to details.

Object

Object primary designation

Close-Approach (CA) Date

Date and while (TDB) about closest Earth approach. "Nominal Date" is given to appropriate precision. The 3-sigma uncertainty in the while is given in the +/- pillar in days_hours:minutes format (for example, "2_15:23" is 2 days, 15 hours, 23 minutes; "< 00:01" is less than 1 minute).

CA Distance Nominal (LD | au)

The most likely (Nominal) close-approach distance (Earth center to NEO center), in LD (Lunar Distance) and .

CA Distance Minimum (LD | au)

The minimum possible close-approach distance (Earth center to NEO center), in LD (Lunar Distance) and . The minimum possible distance is based supported by the 3-sigma Earth target-plane error ellipse.

V relative (km/s)

Object velocity relative to Earth at close-approach.

V infinity (km/s)

Object velocity relative to a massless Earth at close-approach.

H (mag)

Asteroid absolute importance (in general, smaller H implies larger asteroid diameter). Undefined appropriate to comets.

Estimated Diameter

Diameter range (min - max) estimated from the asteroid's absolute importance (H) and limiting albedos about 0.25 and 0.05.

au

One Astronomical Unit (au) is almost 150 million kilometers (see appropriate to definition).

LD

One Lunar Distance (LD) is almost 384,000 kilometers (see appropriate to definition).