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74626 (1999 RW38)
Classification: Main-belt Asteroid          SPK-ID: 2074626
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .07087266491868446 3.0634e-08  
a 2.237744851029651 9.0392e-09 au
q 2.079149910029115 6.7397e-08 au
i 6.583413179426024 3.3458e-06 deg
node 98.56476045768568 4.0659e-05 deg
peri 178.5605134311831 5.3581e-05 deg
M 128.4291742631909 3.5015e-05 deg
tp 2458564.310239732061
(2019-Mar-21.81023973)
0.00011939 TDB
period 1222.684133860884
3.35
7.4084e-06
2.028e-08
d
yr
n .294434179711831 1.784e-09 deg/d
Q 2.396339792030187 9.6799e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1083  
   data-arc span      8248 days (22.58 yr)  
   first obs. used      1998-03-24  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53011  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:58  

Additional Information
 Earth MOID = 1.06272 au 
 Jupiter MOID = 2.67101 au 
 T_jup = 3.625 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457009.5 (2014-Dec-18.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07075639776945407 3.0572e-08  
q 2.079566774990201 6.7255e-08 au
tp 2457342.732822170244
(2015-Nov-16.23282217)
0.00012149 TDB
node 98.58938244352251 4.068e-05 deg
peri 178.8862366453725 5.3679e-05 deg
i 6.581829142243599 3.3447e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1083  
   data-arc span      8248 days (22.58 yr)  
   first obs. used      1998-03-24  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53011  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:58  

Additional Information
 Jupiter MOID = 2.67101 au 
 T_jup = 3.625 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.346244908381874E-16 -2.040418042488067E-15 -1.584033274971222E-13 -1.103831572453542E-15 -3.424807371286137E-14 -6.515899347553986E-16
q -2.040418042488067E-15 4.523180039162656E-15 9.445055074506506E-14 1.158383966583354E-15 -3.250797107277769E-15 1.487610011175657E-15
tp -1.584033274971222E-13 9.445055074506506E-14 1.476018672665431E-8 5.900506152763291E-11 4.2799938001333E-9 5.524690336736791E-12
node -1.103831572453542E-15 1.158383966583354E-15 5.900506152763291E-11 1.654849875799785E-9 -1.626116746421938E-9 1.112845034634189E-11
peri -3.424807371286137E-14 -3.250797107277769E-15 4.2799938001333E-9 -1.626116746421938E-9 2.881458967952121E-9 -9.433465156318941E-12
i -6.515899347553986E-16 1.487610011175657E-15 5.524690336736791E-12 1.112845034634189E-11 -9.433465156318941E-12 1.118677132351748E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO436304  

74626 (1999 RW38)          Discovered 1999-Sep-12 by Broughton, J. at Reedy Creek
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RW38 = 1998 FK86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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