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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1444522636375469 4.9153e-08  
a 2.684335986605725 1.6609e-08 au
q 2.2965775769768 1.3515e-07 au
i 3.716620088119875 5.9172e-06 deg
node 334.3436371579243 7.0561e-05 deg
peri 58.16566178313237 7.3223e-05 deg
M 251.7172027112741 2.1313e-05 deg
tp 2459483.681950926634
(2021-Sep-26.18195093)
9.8e-05 TDB
period 1606.400154862815
4.40
1.4909e-05
4.082e-08
d
yr
n .2241035640529701 2.0799e-09 deg/d
Q 3.07209439623465 1.9008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      514  
   data-arc span      10422 days (28.53 yr)  
   first obs. used      1990-10-19  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58172  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:57:50  

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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