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66623 (1999 RL204)
Classification: Main-belt Asteroid          SPK-ID: 2066623
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 .108818044794093 4.9998e-08  
a 2.636687875329061 1.5014e-08 au
q 2.349768656003461 1.2677e-07 au
i 11.84541449672371 5.4811e-06 deg
node 316.8174955863792 1.8646e-05 deg
peri 239.3214371183208 2.7544e-05 deg
M 152.2622402209264 2.1588e-05 deg
tp 2458539.081672900815
(2019-Feb-24.58167290)
9.2746e-05 TDB
period 1563.819088765658
4.28
1.3357e-05
3.657e-08
d
yr
n .2302056565150081 1.9662e-09 deg/d
Q 2.923607094654661 1.6647e-08 au
  Orbit Determination Parameters
   # obs. used (total)      962  
   data-arc span      8729 days (23.90 yr)  
   first obs. used      1997-01-12  
   last obs. used      2020-12-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50849  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:23:49  

Additional Information
 Earth MOID = 1.37487 au 
 Jupiter MOID = 2.14107 au 
 T_jup = 3.359 
[ 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 14.75   n/a E2021B10  
diameter diameter 2.838 km 0.463 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.551   0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66623 (1999 RL204)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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