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101925 (1999 RK18)
Classification: Main-belt Asteroid          SPK-ID: 2101925
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2171754794407315 3.1488e-08  
a 2.351720128676649 9.15e-09 au
q 1.840984182220879 7.6634e-08 au
i 10.93765472267794 5.0032e-06 deg
node .9807894443373537 1.6696e-05 deg
peri 289.5396171018465 2.0419e-05 deg
M 1.692233532026187 1.1394e-05 deg
tp 2459194.307946827056
(2020-Dec-10.80794683)
4.1688e-05 TDB
period 1317.276309724777
3.61
7.6878e-06
2.105e-08
d
yr
n .2732911822237327 1.595e-09 deg/d
Q 2.862456075132418 1.1137e-08 au
  Orbit Determination Parameters
   # obs. used (total)      817  
   data-arc span      7564 days (20.71 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-05-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50062  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:25  

Additional Information
 Earth MOID = .857796 au 
 Jupiter MOID = 2.4375 au 
 T_jup = 3.501 
[ 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 15.82   n/a E2021B55  
diameter diameter 1.756 km 0.425 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.362   0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101925 (1999 RK18)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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