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216698 (2004 RW142)
Classification: Main-belt Asteroid          SPK-ID: 2216698
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1815878015393683 4.7839e-08  
a 3.186518366763896 3.2536e-08 au
q 2.607885501978421 1.5475e-07 au
i 13.43231403587074 5.5604e-06 deg
node 246.4912940840595 2.0992e-05 deg
peri 352.5623146460163 2.5844e-05 deg
M 46.81917945757367 1.3074e-05 deg
tp 2458930.294388959326
(2020-Mar-21.79438896)
7.5325e-05 TDB
period 2077.653241718806
5.69
3.1821e-05
8.712e-08
d
yr
n .1732724175388277 2.6538e-09 deg/d
Q 3.76515123154937 3.8444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      6771 days (18.54 yr)  
   first obs. used      2002-02-08  
   last obs. used      2020-08-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5348  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:55:56  

Additional Information
 Earth MOID = 1.59465 au 
 Jupiter MOID = 1.27557 au 
 T_jup = 3.130 
[ 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 14.66   n/a E2021B55  
diameter diameter 7.155 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216698 (2004 RW142)          Discovered 2004-Sep-08 by NEAT at Palomar
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

[ show close-approach data ]
Alternate Designations
 2004 RW142 = 2008 EZ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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