2019 MO

2019 MO
	Orbital diagram of 2019 MO on 22 June 2019
Discovery
Discovered by	ATLAS–MLO (T08)
Discovery site	Mauna Loa Obs.
Discovery date	22 June 2019
Designations
MPC designation	2019 MO
Alternative designations	NEOCP A10eoM1
Minor planet category	NEO · Apollo ; Alinda
Orbital characteristics
	Epoch 22 June 2019 (JD 2458656.5)
	Uncertainty parameter 9 · 7
Observation arc	2.3 h (approx.)
Aphelion	4.0116 AU
Perihelion	0.9384 AU
Semi-major axis	2.4750 AU
Eccentricity	0.6208
Orbital period (sidereal)	3.89 yr (1,422 d)
Mean anomaly	352.63°
Mean motion	0° 15m 11.16s / day
Inclination	1.5471°
Longitude of ascending node	91.040°
Time of perihelion	2019-Jul-21
Argument of perihelion	216.76°
Earth MOID	4.54412×10−7 AU (67.9791 km)
Physical characteristics
Mean diameter	3 m
Absolute magnitude (H)	29.3

2019 MO, temporarily designated A10eoM1, was a small, harmless 3-meter near-Earth asteroid discovered by ATLAS–MLO that impacted Earth's atmosphere on 22 June 2019 at 21:25 UT.^[3]^[4]^[5]^[6] The impact of the bolide generated a 5-kiloton-equivalent explosion off the south coast of Puerto Rico which was detected by infrasound detectors.^[5] The strewn field would be spread over the Caribbean Sea.^[7]

The Apollo asteroid was inbound approaching a late July perihelion (closest approach to the Sun) when it impacted Earth at 16.1 km/s.^[8]

^ Cite error: The named reference MPEC 2019-M72 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).
^ ^a ^b ^c ^d ^e Cite error: The named reference jpldata was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference projectpluto was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference remanzacco was invoked but never defined (see the help page).
^ Mack, Eric (25 June 2019). "An asteroid hit Earth right after being spotted by telescope this week". CNET. Retrieved 29 June 2019.
^ Cite error: The named reference UH was invoked but never defined (see the help page).
^ Cite error: The named reference Horizons-2019MO was invoked but never defined (see the help page).

[MPEC_2019-M72-1] Cite error: The named reference MPEC 2019-M72 was invoked but never defined (see the help page).

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

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

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

[remanzacco-5] Cite error: The named reference remanzacco was invoked but never defined (see the help page).

[6] Mack, Eric (25 June 2019). "An asteroid hit Earth right after being spotted by telescope this week". CNET. Retrieved 29 June 2019.

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

[Horizons-2019MO-8] Cite error: The named reference Horizons-2019MO was invoked but never defined (see the help page).

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

Discovery ^[1]^[2]
Orbital diagram of 2019 MO on 22 June 2019
Discovered by	ATLAS–MLO (T08)
Discovery site	Mauna Loa Obs.
Discovery date	22 June 2019
Designations
MPC designation	2019 MO
Alternative designations	NEOCP A10eoM1
Minor planet category	NEO · Apollo ^[2]^[3] Alinda
Orbital characteristics ^[3]
Epoch 22 June 2019 (JD 2458656.5)
Uncertainty parameter 9 ^[3] · 7 ^[2]
Observation arc	2.3 h (approx.)^[4]
Aphelion	4.0116 AU
Perihelion	0.9384 AU
Semi-major axis	2.4750 AU
Eccentricity	0.6208
Orbital period (sidereal)	3.89 yr (1,422 d)
Mean anomaly	352.63°
Mean motion	0° 15^m 11.16^s / day
Inclination	1.5471°
Longitude of ascending node	91.040°
Time of perihelion	2019-Jul-21
Argument of perihelion	216.76°
Earth MOID	4.54412×10⁻⁷ AU (67.9791 km)
Physical characteristics
Mean diameter	3 m^[5]
Absolute magnitude (H)	29.3^[2]^[3]