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66486 (1999 RF42)
Classification: Main-belt Asteroid          SPK-ID: 2066486
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1444522671317238 4.9154e-08  
a 2.684335981636806 1.6613e-08 au
q 2.296577563346108 1.3515e-07 au
i 3.716613259411633 5.9308e-06 deg
node 334.3435807193943 7.0621e-05 deg
peri 58.1657119450958 7.3299e-05 deg
M 251.7172085152713 2.1342e-05 deg
tp 2459483.681923686294
(2021-Sep-26.18192369)
9.8119e-05 TDB
period 1606.400150402454
4.40
1.4913e-05
4.083e-08
d
yr
n .2241035646752203 2.0804e-09 deg/d
Q 3.072094399927505 1.9013e-08 au
  Orbit Determination Parameters
   # obs. used (total)      510  
   data-arc span      10415 days (28.51 yr)  
   first obs. used      1990-10-19  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58734  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:30:04  

Additional Information
 Earth MOID = 1.30498 au 
 Jupiter MOID = 2.37777 au 
 T_jup = 3.357 
[ 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 15.6   n/a MPO432216  
diameter diameter 4.029 km 0.860 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66486 (1999 RF42)          Discovered 1999-Sep-14 by Kusnirak, P., Pravec, P. at Ondrejov
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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