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101139 (1998 RA66)
Classification: Main-belt Asteroid          SPK-ID: 2101139
[ 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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08628559793410175 3.6299e-08  
a 2.255267833980302 9.3772e-09 au
q 2.060670700423765 8.2204e-08 au
i 9.251700391785688 3.9167e-06 deg
node 184.25503015756 2.2294e-05 deg
peri 173.7070723775469 3.0692e-05 deg
M 208.4969098629878 2.1374e-05 deg
tp 2459721.112517271255
(2022-May-21.61251727)		 7.435e-05 TDB
period 1237.07381841623
3.39		 7.7155e-06
2.112e-08		 d
yr
n .2910093113609759 1.815e-09 deg/d
Q 2.449864967536838 1.0186e-08 au
   Orbit Determination Parameters
   # obs. used (total)      782  
   data-arc span      7863 days (21.53 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-03-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56305  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:22  

Additional Information
 Earth MOID = 1.05559 au 
 Jupiter MOID = 2.88124 au 
 T_jup = 3.602 
[ 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 16.09   n/a E2021B55  
diameter diameter 2.039 km 0.632 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.203   0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101139 (1998 RA66)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 RA66 = 2003 AU11 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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