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JPL Small-Body Database Browser
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66629 (1999 RJ208)
Classification: Main-belt Asteroid          SPK-ID: 2066629
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1495260926675488 3.7132e-08  
a 2.742492006793514 1.4912e-08 au
q 2.332417892845695 1.0222e-07 au
i 8.365203620053821 5.1576e-06 deg
node 281.1867330575706 4.2531e-05 deg
peri 143.0266962749037 4.9963e-05 deg
M 157.4951401523113 2.4265e-05 deg
tp 2458274.759868543505
(2018-Jun-05.25986854)
0.00011114 TDB
period 1658.885773057321
4.54
1.353e-05
3.704e-08
d
yr
n .2170131336629171 1.77e-09 deg/d
Q 3.152566120741333 1.7142e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1027  
   data-arc span      7235 days (19.81 yr)  
   first obs. used      1999-07-23  
   last obs. used      2019-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51614  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 15:00:29  

Additional Information
 Earth MOID = 1.35248 au 
 Jupiter MOID = 2.15122 au 
 T_jup = 3.318 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO436247  
diameter diameter 4.090 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.265   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66629 (1999 RJ208)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RJ208 = 2001 BS43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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