(52768) 1998 OR2

(52768) 1998 OR₂
	Arecibo Observatory radar image of 1998 OR2 with a crater on 18 April 2020
Discovery
Discovered by	NEAT
Discovery site	Haleakala Obs.
Discovery date	24 July 1998
Designations
MPC designation	(52768) 1998 OR2
Alternative designations	1998 OR2
Minor planet category	Amor · NEO · PHA
Orbital characteristics
	Epoch 25 February 2023 (JD 2460000.5 )
	Uncertainty parameter 0
Observation arc	35.49 yr (12,963 days)
Earliest precovery date	30 June 1987 (Siding Spring Obs.)
Aphelion	3.750 AU
Perihelion	1.011 AU
Semi-major axis	2.380 AU
Eccentricity	0.5754
Orbital period (sidereal)	3.67 yr (1,342 days)
Mean anomaly	280.159°
Mean motion	0° 16m 6.082s / day
Inclination	5.878°
Longitude of ascending node	26.942°
Argument of perihelion	174.580°
Earth MOID	0.00866 AU (3.37 LD)
Physical characteristics
Dimensions	2.08 × 1.93 × 1.60 km; (± 0.10 × 0.10 × 0.03 km)
Mean diameter	1.78±0.10 km
Surface area	10.67 km2
Volume	3.0±0.5 km3
Mean density	3.2±0.2 g/cm3
Synodic rotation period	4.10872±0.00001 h
Axial tilt	69.3°±5° (wrt ecliptic)
Pole ecliptic latitude	20.7°±5°
Pole ecliptic longitude	332.3°±5°
Geometric albedo	0.15
Spectral type	Xn or S
Absolute magnitude (H)	15.72±0.02; 16.04

(52768) 1998 OR₂ (provisional designation 1998 OR₂) is an asteroid on an eccentric orbit, classified as a near-Earth object and potentially hazardous asteroid of the Amor group, with a diameter of 2 kilometers (1.2 mi). It was discovered on 24 July 1998, by astronomers of the Near-Earth Asteroid Tracking (NEAT) program at the Haleakala Observatory, Hawaii, it passed very near to earth on 29 April 2020 at around 4:15am.^[3] It is one of the brightest and therefore largest potentially hazardous asteroids known to exist.^[7] With an observation arc of 35 years, the asteroid has a well-determined orbit, and its trajectory is well known through the year 2197.^[2] The asteroid's orbit is only potentially hazardous on a time scale of thousands of years.^[8]

^ ^a ^b ^c Cite error: The named reference PDC-Devogele2023 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e Cite error: The named reference jpldata was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Cite error: The named reference MPC-object was invoked but never defined (see the help page).
^ Cite error: The named reference coordstransform was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Battle2022 was invoked but never defined (see the help page).
^ Cite error: The named reference Husarik2022 was invoked but never defined (see the help page).
^ Cite error: The named reference MPC-PHA-list was invoked but never defined (see the help page).
^ Cite error: The named reference PeterThomas was invoked but never defined (see the help page).

Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).

[PDC-Devogele2023-1] Cite error: The named reference PDC-Devogele2023 was invoked but never defined (see the help page).

[jpldata-2] Cite error: The named reference jpldata was invoked but never defined (see the help page).

[MPC-object-3] Cite error: The named reference MPC-object was invoked but never defined (see the help page).

[coordstransform-4] Cite error: The named reference coordstransform was invoked but never defined (see the help page).

[Battle2022-6] Cite error: The named reference Battle2022 was invoked but never defined (see the help page).

[Husarik2022-7] Cite error: The named reference Husarik2022 was invoked but never defined (see the help page).

[MPC-PHA-list-8] Cite error: The named reference MPC-PHA-list was invoked but never defined (see the help page).

[PeterThomas-9] Cite error: The named reference PeterThomas was invoked but never defined (see the help page).

[1]

[2]

[3]

[a]

[5]

[6]

[7]

[8]