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JPL Small-Body Database Browser
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59945 (1999 RH202)
Classification: Outer Main-belt Asteroid          SPK-ID: 2059945
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08766323201425462 3.652e-08  
a 3.240185747342001 2.7244e-08 au
q 2.956140592403478 1.2303e-07 au
i 9.999429360337016 5.2008e-06 deg
node 296.461548818747 2.877e-05 deg
peri 327.8567456956528 4.4384e-05 deg
M 285.1021276095125 3.3366e-05 deg
tp 2459443.720937553677
(2021-Aug-17.22093755)
0.0001974 TDB
period 2130.361416509194
5.83
2.6869e-05
7.356e-08
d
yr
n .1689854112124765 2.1313e-09 deg/d
Q 3.524230902280523 2.9632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      914  
   data-arc span      7535 days (20.63 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53798  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:51:06  

Additional Information
 Earth MOID = 1.94579 au 
 Jupiter MOID = 1.64551 au 
 T_jup = 3.154 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457100.5 (2015-Mar-19.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08655237016921981 3.6403e-08  
q 2.959878809204538 1.2247e-07 au
tp 2457307.562778663906
(2015-Oct-12.06277866)
0.00020196 TDB
node 296.4917834635729 2.8774e-05 deg
peri 327.1349374833334 4.4754e-05 deg
i 9.997958722087112 5.1999e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      914  
   data-arc span      7535 days (20.63 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53798  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:51:06  

Additional Information
 Jupiter MOID = 1.64551 au 
 T_jup = 3.154 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.325159441772754E-15 -4.367153817332561E-15 1.377134651184341E-12 -2.90848249971611E-15 2.467122874902557E-13 -8.559827364905872E-16
q -4.367153817332561E-15 1.499835369115287E-14 -5.085744655807022E-12 2.685157436574E-14 -9.393224777765035E-13 5.738816038774387E-15
tp 1.377134651184341E-12 -5.085744655807022E-12 4.078936519640456E-8 -1.065840046383147E-11 6.966772740049776E-9 -4.649565509972772E-12
node -2.90848249971611E-15 2.685157436574E-14 -1.065840046383147E-11 8.279312168769313E-10 -8.162781842319287E-10 5.718218271760016E-11
peri 2.467122874902557E-13 -9.393224777765035E-13 6.966772740049776E-9 -8.162781842319287E-10 2.002964433782296E-9 -5.709234294230479E-11
i -8.559827364905872E-16 5.738816038774387E-15 -4.649565509972772E-12 5.718218271760016E-11 -5.709234294230479E-11 2.703867715584011E-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 13.9   n/a MPO502547  

59945 (1999 RH202)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RH202 = 2000 XA6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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