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22878 (1999 RA202)
Classification: Main-belt Asteroid          SPK-ID: 2022878
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1793339744825034 4.5322e-08  
a 2.701192895372674 1.5888e-08 au
q 2.216777237601592 1.2216e-07 au
i 11.05564178962165 4.798e-06 deg
node 252.8531701595542 2.3926e-05 deg
peri 159.823484079419 2.6844e-05 deg
M 248.7423438138101 1.2329e-05 deg
tp 2459701.640187208236
(2022-May-02.14018721)
5.7442e-05 TDB
period 1621.555527765638
4.44
1.4307e-05
3.917e-08
d
yr
n .2220090486176866 1.9588e-09 deg/d
Q 3.185608553143757 1.8737e-08 au
  Orbit Determination Parameters
   # obs. used (total)      703  
   data-arc span      12313 days (33.71 yr)  
   first obs. used      1986-11-30  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50637  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:14:15  

Additional Information
 Earth MOID = 1.23122 au 
 Jupiter MOID = 2.1803 au 
 T_jup = 3.318 
[ 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 15.07   n/a E2021B10  
diameter diameter 6.424 km 0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22878 (1999 RA202)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RA202 = 1986 WW9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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