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135221 (2001 RK101)
Classification: Main-belt Asteroid          SPK-ID: 2135221
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1440533071464632 6.7097e-08  
a 3.102958343153688 2.6088e-08 au
q 2.65596693188469 2.0411e-07 au
i 12.30153230181808 5.8517e-06 deg
node 9.888546710200359 1.9986e-05 deg
peri 8.03942765758393 2.5097e-05 deg
M 158.9139284815859 1.7763e-05 deg
tp 2458319.203981844024
(2018-Jul-19.70398184)
9.4206e-05 TDB
period 1996.46795952763
5.47
2.5178e-05
6.893e-08
d
yr
n .1803184460246369 2.274e-09 deg/d
Q 3.549949754422687 2.9846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      674  
   data-arc span      8060 days (22.07 yr)  
   first obs. used      1999-04-07  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50594  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:20:52  

Additional Information
 Earth MOID = 1.65666 au 
 Jupiter MOID = 1.92203 au 
 T_jup = 3.170 
[ 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 14.81   n/a E2021B55  
diameter diameter 6.323 km 1.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

135221 (2001 RK101)          Discovered 2001-Sep-12 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

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