163348 (2002 NN4) Information Sheet

The asteroid 163348 (2002 NN4) has been in the news recently. It passed "under" Earth's orbit on 2020-06-03 and Earth will pass over its orbit on 2020-06-05 and the close approach will be 2020-Jun-06 03:20 (UTC).

163348 (2002 NN4)
Earth Distance: 0.034 au
Sun Distance: 1.036 au
2020-06-06 03:20 UTC
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=163348;old=0;orb=1;cov=0;log=0;cad=1#orb

Background

(as of 2020-06-04)

• Object: 163348 (2002 NN4) 

• Orbit Type: Aten  [NEO,  PHA]
• Approximate Diameter: 250 m - 570 m (820.21 feet to 1870.08) (Absolute Magnitude: H= 20.1)[ Neowise estimates 2002NN4 to be 700 meters in diameter.]

• On the Sentry Risk Table: NO  In fact is has never been listed on Sentry  for more information read  Understanding Risk Pages by Jon Giorgini

•  On the NEODyS CLOMON2 risk page: NO

• Listed on The Near-Earth Object Human Space Flight Accessible Targets Study (NHATS): NO

• Listed on Goldstone Asteroid Radar Schedule:Yes

• First(Precovery) Observation was made: 2002 07 02.44600(By Palomar Mountain/NEAT, (MPC Code 644)

• Discovery observation was made:2002 07 09.32451 (By Lincoln Laboratory ETS, New Mexico. (MPC Code 704)

• Last Observation(publish): 2016 08 28.84488 (By Castelmartini) (MPC Code 160)

• Data-Arc Span (publish): 5171 days

• Number of Optical Observations(published): 364

• Number of  Observatories Reporting (Published) Observations : 47

• Observatories Reporting (Published) Observations(MPC Code):

• (046) Kleť Observatory, Ceske Budejovice, Czech

• (104) San Marcello Pistoiese, Italy. 

• (106) Črni Vrh, Slovenia.

• (113) Drebach, Germany.

• (130) Lumezzane,  Italy.

• (151) Eschenberg Observatory, Winterthur, Switzerland.

• (160) Castelmartini, Italy.

• (176) Observatori Astronomic de Consell, Spain.

• (198) Wildberg, Germany. 

• (203) GiaGa Observatory, Italy. 

• (204) Schiaparelli Observatory, Italy. 

• (240) Herrenberg Sternwarte, Germany. 

• (246) Klet Observatory-KLENOT, Czech Republic.

• (291) LPL/Spacewatch II, US/Arizona.

• (355) Hadano, Japan. 

• (422) Loomberah,  Australia/NSW.

• (448) Desert Moon, US/New Mexico.

• (473) Remanzacco,  Italy.

• (557) Ondřejov, Czech Republic. 

• (560) Madonna di Dossobuono, Italy. 

• (568) Mauna Kea, US/Hawaii.

• (587) Sormano, Italy. 

• (595) Farra d'Isonzo, Italy.

• (611) Starkenburg  (N49.647790 E8.653100)  Germany.

• (620) Observatorio Astronomico de Mallorca, Spain.

• (644) Palomar Mountain (NEAT),US/California. 

• (649) Powell Observatory, Louisburg, US/Kansas.

• (671) Stony Ridge  

• (673) Table Mountain Observatory, Wrightwood, US/California.

• (703) Catalina Sky Survey,  US/Arizona. 

• (704) Lincoln Observatory ETS, New Mexico,  US/New Mexico. 

• (715) Las Cruces,US/New Mexico. 

• (734) Farpoint Observatory, Eskridge, US/Kansas.

• (848) Tenagra Observatory, Cottage Grove, US/Oregon.

• (926) Tenagra II, US/Arizona.

• (966) Church Stretton, UK. 

• (A16) Tentlingen, Switzerland.

• (A17) Guidestar Observatory, Weinheim, Germany.

• (A24) New Millennium Observatory, Italy

• (B38) Santa Mama,  Italy.

• (C51) WISE.

• (D29) Purple Mountain Observatory, XuYi Station,  China. 

• (F51) Pan-STARRS 1, Haleakala,US/Hawaii.

• (H45) Arkansas Sky Obs., Petit Jean Mountain South. US/Arkansas.

• (H55) Astronomical Research Observatory,  Charleston, US/Illinois.

• (J95) Great Shefford, UK

• (Z52) The Studios Observatory, Grantham, UK.

• Perihelion Distance: 0.4955781402508977(AU)

• Aphelion Distance: 1.257210521695571(AU)

• Earth MOID: 0.00693791(AU),  2.7 (LD), 162.727229457(Earth Radii), 644,919.024 (Miles), or 1,037,896.563 (KM) 

• Close-Approach to Earth: Will safely pass Earth on 2020-Jun-06 03:20 at a Nominal Distance of 0.0340470945348114 (AU), 13.25(LD), 798.56748858316973383 (Earth Radii), 3,164,875.1578(Miles), or 5,093,372.846(KM). "IF" the Earth was the Size of a Basketball the (163348) 2002 NN4 flyby would be 309.92 feet (94.46 meters) away 

See:

• JPL Small-Body Database Browser  163348 (2002 NN4)

• MPC Database (163348) = 2002 NN4

• NEODyS-2(163348) 2002NN4

• Known-(with reasonably low uncertainty)-NEO-Earth-Close-Approaches-Less-Than-10LD(Nominal_Dist)

Edited for typo