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6916 Lewispearce (1992 OJ)
Classification: Main-belt Asteroid          SPK-ID: 2006916
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2592597030177894 3.7823e-08  
a 2.848718947911801 1.6143e-08 au
q 2.110160919495038 1.1129e-07 au
i 18.24076456272552 4.95e-06 deg
node 314.5806339480136 1.2729e-05 deg
peri 310.7303863233869 1.8339e-05 deg
M 303.9403205499477 1.6868e-05 deg
tp 2459273.977085316932
8.3182e-05 TDB
period 1756.195391766614
n .2049885802500964 1.7424e-09 deg/d
Q 3.587276976328564 2.0328e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2161  
   data-arc span      17087 days (46.78 yr)  
   first obs. used      1973-08-29  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41041  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:35:53  

Additional Information
 Earth MOID = 1.13811 au 
 Jupiter MOID = 1.8103 au 
 T_jup = 3.184 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.8   n/a MPO435765  
diameter diameter 11.962 km 0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 23.497 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.312   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

6916 Lewispearce           Discovered 1992 July 27 by R. H. McNaught at Siding Spring.
Named in memory of Lewis Percival Pearce, infant son of amateur astronomer and comet observer Andrew Pearce. Born in Nedlands, Western Australia, on 1999 Jan. 23, Lewis suffered oxygen deprivation during delivery and never gained consciousness. Before his death twelve days later, he shared some experiences with his parents, including "observing the stars" with his dad.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1992 OJ = 1973 QH1 = 1986 AM2 = 1986 AP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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