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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456788.5 (2014-May-11.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05619815637561808 3.2008e-08  
q 2.635847121655727 9.1424e-08 au
tp 2457014.096031945339
(2014-Dec-22.59603195)
0.00018542 TDB
node 137.7759314780829 1.3962e-05 deg
peri 300.0459153170568 4.2481e-05 deg
i 15.47949041468771 4.0973e-06 deg
  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
 Jupiter MOID = 2.18468 au 
 T_jup = 3.273 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.024543010756104E-15 -2.896104745001581E-15 2.255935752992347E-13 -5.627790122962361E-15 5.536275768644583E-14 -2.153756645891597E-15
q -2.896104745001581E-15 8.358304915874893E-15 -1.118654814608841E-12 1.640822576365784E-14 -2.650613998851746E-13 6.628949579724036E-15
tp 2.255935752992347E-13 -1.118654814608841E-12 3.438221882912137E-8 -1.717151976777376E-11 7.454733913367699E-9 -7.024848251685135E-12
node -5.627790122962361E-15 1.640822576365784E-14 -1.717151976777376E-11 1.949458971655831E-10 -1.912668548724637E-10 6.447520595260512E-12
peri 5.536275768644583E-14 -2.650613998851746E-13 7.454733913367699E-9 -1.912668548724637E-10 1.804632390644317E-9 -7.723273261304439E-12
i -2.153756645891597E-15 6.628949579724036E-15 -7.024848251685135E-12 6.447520595260512E-12 -7.723273261304439E-12 1.678763221646027E-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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