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20502 (1999 RG11)
Classification: Main-belt Asteroid          SPK-ID: 2020502
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05841365512831729 3.137e-08  
a 2.79361521434379 1.3672e-08 au
q 2.630429938651892 8.9314e-08 au
i 15.47026302437022 4.0811e-06 deg
node 137.7169529638077 1.3438e-05 deg
peri 299.1551644967577 4.0607e-05 deg
M 60.16401396345463 3.6689e-05 deg
tp 2458715.475225756877
(2019-Aug-19.97522576)
0.00017414 TDB
period 1705.486585217732
4.67
1.252e-05
3.428e-08
d
yr
n .2110834544934521 1.5496e-09 deg/d
Q 2.956800490035688 1.4471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2301  
   data-arc span      8524 days (23.34 yr)  
   first obs. used      1996-12-26  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:13:02  

Additional Information
 Earth MOID = 1.67984 au 
 Jupiter MOID = 2.18468 au 
 T_jup = 3.273 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456916.5 (2014-Sep-16.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05622330586588387 3.1465e-08  
q 2.635743820031846 8.9397e-08 au
tp 2457014.351048931362
(2014-Dec-22.85104893)
0.0001837 TDB
node 137.7761776928207 1.3421e-05 deg
peri 300.1072485828722 4.1999e-05 deg
i 15.47949337582834 4.0836e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2301  
   data-arc span      8524 days (23.34 yr)  
   first obs. used      1996-12-26  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:13:02  

Additional Information
 Jupiter MOID = 2.18468 au 
 T_jup = 3.273 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.90054523123359E-16 -2.78373385382766E-15 3.670036357141594E-13 -3.591792741814456E-15 8.048522392997532E-14 -1.900079726308634E-15
q -2.78373385382766E-15 7.99188847883847E-15 -1.588793277060558E-12 1.020733785279824E-14 -3.492090683131101E-13 5.814482386046127E-15
tp 3.670036357141594E-13 -1.588793277060558E-12 3.374452087860429E-8 -9.612249773213442E-12 7.324489273801859E-9 -6.861796669123751E-12
node -3.591792741814456E-15 1.020733785279824E-14 -9.612249773213442E-12 1.801344096209538E-10 -1.753248923167969E-10 5.175610684531931E-12
peri 8.048522392997532E-14 -3.492090683131101E-13 7.324489273801859E-9 -1.753248923167969E-10 1.763945220856015E-9 -6.449676552435721E-12
i -1.900079726308634E-15 5.814482386046127E-15 -6.861796669123751E-12 5.175610684531931E-12 -6.449676552435721E-12 1.667568943878317E-11

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 13.1   n/a MPO502321  
diameter diameter 14.430 km 0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.028   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20502 (1999 RG11)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RG11 = 1998 KD52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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