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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 
[ 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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2015-Dec-26 14:30 00:02 Hebe 0.0315387548821098 0.0315375548813047 0.031539954891312 2.0262331935619 2.0262330962819 2457383.104091385 2.07967836505682 71.588441204951 45.5424016868612 45.7133128729786 87064.8189933243 T 31 CATAB v2.0f-lin.ifort 2020-May-20 05:13:18 2020-May-20 05:13
2096-Jan-24 04:21 00:12 Hebe 0.0408808767280626 0.0408778419910829 0.0408839139523272 2.19466314589228 2.19466307660245 2486631.681127352 11.9353628796871 570.460482011726 61.8567583876624 -75.9038748230811 95726.1814748545 T 31 CATAB v2.0f-lin.ifort 2020-May-20 05:13:18 2020-May-20 05:13

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