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66551 (1999 RC128)
Classification: Main-belt Asteroid          SPK-ID: 2066551
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1186510550164094 4.4653e-08  
a 2.723482495691642 2.055e-08 au
q 2.400338424259105 1.186e-07 au
i 17.86468526342616 5.5804e-06 deg
node 154.2110034895465 1.4835e-05 deg
peri 137.7808972700832 2.6915e-05 deg
M 252.4719411892553 2.3712e-05 deg
tp 2459490.848232527087
(2021-Oct-03.34823253)
0.00011019 TDB
period 1641.667911260683
4.49
1.8581e-05
5.087e-08
d
yr
n .2192891738521866 2.482e-09 deg/d
Q 3.046626567124179 2.2988e-08 au
  Orbit Determination Parameters
   # obs. used (total)      550  
   data-arc span      7975 days (21.83 yr)  
   first obs. used      1998-04-03  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60316  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:58:50  

Additional Information
 Earth MOID = 1.41156 au 
 Jupiter MOID = 2.34519 au 
 T_jup = 3.278 
[ 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 15.2   n/a MPO426389  
diameter diameter 3.920 km 0.998 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.126   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66551 (1999 RC128)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RC128 = 2002 EX92 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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