The NEO 2016 WJ1 on 2016-11-24

See The NEO 2016 WJ1 Has Been Removed from the Sentry Risk Table--Neodys Risk Table List 3 Possible Impacts 2106-2115.

Background
(as of 2016-11-23) 

• Object: 2016 WJ1 
• Approximate Diameter: 150 m - 330 m (492.126 feet to 1082.68 feet)(Absolute Magnitude: H= 21.303)
• Orbit Type: Apollo [NEO]- Potentially Hazardous Asteroid
• On the Sentry Risk Table: yes NO  NOTE this is NOT a prediction of an impact but rather a statement there is insufficient observational data rule out an impact -- for information read  Understanding Risk Pages by Jon Giorgini
• On the NEODyS CLOMON2 risk page: yes
• First observation was made: 2016 11 19.46522
• First observed by: Mt. Lemmon Survey (MPC Code G96) The Discovery M.P.E.C.: MPEC 2016-W38 : 2016 WJ1
• Last Observation(publish): 2016 11 23.32687 (byTenagra II Observatory, Nogales (MPC Code 926)
• Data-Arc Span(publish) : 4 days
• Number of Optical Observations(published): 56
  
• Perihelion Distance: 0.6659416098880451  (AU)
• Aphelion Distance: 2.008089275410093 (AU)
• Earth MOID: 0.000375787 AU (0.146 (LD)) or 34,931.584 miles (56,216.935 (KM))
• Close-Approach to Earth: Will safely pass Earth on 2016-December-16 at a Nominal Distance of  0.053816832705857 (AU) ( 20.944 (LD)) or 5,002,587.129 miles (8,050,883.58 (KM))

The NEO 2016 WJ1 on 2016-11-24 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 10- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

The NEO 2016 WJ1 on 2016-11-24 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 10- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

The NEO 2016 WJ1 on 2016-11-24 from Mayhill, New Mexico (New Mexico Skies) (MPC Code H06)
a stack of 10- 60 Second Luminance BIN2 Images taken with iTelescope.net's
(T11 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
(c) Steven M.Tilley

Useful Links:

• Space Situational Awareness(ESA) -- 2016 WJ1
• Near Earth Objects Dynamic Site--2016 WJ1
• (MPC) Observations --2016 WJ1
• JPL Orbit Diagram --2016 WJ1
• NEO Earth Close Approaches (JPL) (up coming)
• JPL's NEO Earth Close-Approaches  (Between 1900 A.D. and 2200 A.D- limited to encounters with  reasonably low uncertainty)
• The Tracking News
• NEO Coordination Centre 
• Speed of Light - Space - Distance Calculator
• Asteroid Hazards: The View from Space(MPC)
• Don’t fear apocalyptic asteroids: you’re safer than you think
• Understanding Risk Pages By Jon Giorgini
• Revised asteroid scale aids understanding of impact risk
• Near Earth Objects Scale Helps Risk Communication
• Dealing With the Impact Hazard: An International Project
• The Palermo Technical Impact Hazard Scale
• An Asteroid as Entered the Blogosphere… Should I Be Worried? A commentary by Steven M. Tilley
• International Asteroid Warning Network