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JPL Small-Body Database Browser
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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05841365428323953 3.1925e-08  
a 2.793615214169478 1.4015e-08 au
q 2.630429940848584 9.1418e-08 au
i 15.47026326486598 4.0948e-06 deg
node 137.7169530048085 1.398e-05 deg
peri 299.1551650869833 4.1067e-05 deg
M 60.16401342291506 3.7125e-05 deg
tp 2458715.475228344340
(2019-Aug-19.97522834)
0.00017613 TDB
period 1705.486585058107
4.67
1.2834e-05
3.514e-08
d
yr
n .2110834545132084 1.5885e-09 deg/d
Q 2.956800487490372 1.4834e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2177  
   data-arc span      8440 days (23.11 yr)  
   first obs. used      1996-12-26  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42143  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:07:52  

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 30 CATAB v2.0f-lin.ifort 2020-Feb-22 23:08:08 2020-Feb-22 23:08
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 30 CATAB v2.0f-lin.ifort 2020-Feb-22 23:08:08 2020-Feb-22 23:08

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