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101926 (1999 RT18)
Classification: Main-belt Asteroid          SPK-ID: 2101926
[ 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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2841435850144215 5.2526e-08  
a 3.11956888453406 2.1218e-08 au
q 2.233163397983112 1.6726e-07 au
i 9.032922435956593 5.8996e-06 deg
node 338.9823873709213 3.0455e-05 deg
peri 22.84114839691675 3.1838e-05 deg
M 306.670309365853 1.4522e-05 deg
tp 2459498.630810194232
(2021-Oct-11.13081019)		 8.3627e-05 TDB
period 2012.52042518323
5.51		 2.0533e-05
5.622e-08		 d
yr
n .1788801720942652 1.825e-09 deg/d
Q 4.005974371085008 2.7247e-08 au
   Orbit Determination Parameters
   # obs. used (total)      859  
   data-arc span      7652 days (20.95 yr)  
   first obs. used      1999-07-16  
   last obs. used      2020-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54509  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:26  

Additional Information
 Earth MOID = 1.23148 au 
 Jupiter MOID = 1.48584 au 
 T_jup = 3.134 
[ 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 14.07   n/a E2021B55  
diameter diameter 5.314 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.172   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101926 (1999 RT18)          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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