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118954 (2000 WR99)
Classification: Main-belt Asteroid          SPK-ID: 2118954
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .159183302484305 5.4759e-08  
a 3.116937280657763 2.4183e-08 au
q 2.620772910686211 1.7792e-07 au
i 6.160673646125662 6.1434e-06 deg
node 68.8406812108712 4.1767e-05 deg
peri 312.4183190083749 4.443e-05 deg
M 277.4354458657666 1.7487e-05 deg
tp 2459661.479551709579
(2022-Mar-22.97955171)
0.00010053 TDB
period 2009.974381326431
5.50
2.3392e-05
6.404e-08
d
yr
n .1791067604366316 2.0845e-09 deg/d
Q 3.613101650629315 2.8033e-08 au
  Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      7175 days (19.64 yr)  
   first obs. used      2000-11-21  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59322  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:59:39  

Additional Information
 Earth MOID = 1.62774 au 
 Jupiter MOID = 1.85677 au 
 T_jup = 3.189 
[ 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 14.89   n/a E2021B55  
diameter diameter 6.859 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118954 (2000 WR99)          Discovered 2000-Nov-21 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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