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102020 (1999 RK90)
Classification: Main-belt Asteroid          SPK-ID: 2102020
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1799774994708382 4.2531e-08  
a 2.297757711992326 6.9805e-09 au
q 1.884213024598113 9.8632e-08 au
i 4.94745790210665 3.4345e-06 deg
node 118.8099831753993 5.5762e-05 deg
peri 289.4372881081663 5.6926e-05 deg
M .2681685707127006 1.0257e-05 deg
tp 2459199.552323411267
(2020-Dec-16.05232341)
3.6247e-05 TDB
period 1272.198196221223
3.48
5.7973e-06
1.587e-08
d
yr
n .2829747763118189 1.2895e-09 deg/d
Q 2.711302399386539 8.2368e-09 au
  Orbit Determination Parameters
   # obs. used (total)      847  
   data-arc span      8294 days (22.71 yr)  
   first obs. used      1998-04-29  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51644  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:30:21  

Additional Information
 Earth MOID = .900451 au 
 Jupiter MOID = 2.67021 au 
 T_jup = 3.567 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.36   n/a E2021B55  
diameter diameter 3.106 km 0.667 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.062   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

102020 (1999 RK90)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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