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74783 (1999 RA250)
Classification: Main-belt Asteroid          SPK-ID: 2074783
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .131561092505189 5.0161e-08  
a 2.397987016652655 1.205e-08 au
q 2.082505224928573 1.1868e-07 au
i 6.291882948451143 6.1202e-06 deg
node 177.6792855882063 3.5466e-05 deg
peri 245.1884818401691 4.161e-05 deg
M 155.1885087789627 2.0946e-05 deg
tp 2458415.809917848582
(2018-Oct-24.30991785)
7.7831e-05 TDB
period 1356.34030657716
3.71
1.0223e-05
2.799e-08
d
yr
n .2654201148887852 2.0006e-09 deg/d
Q 2.713468808376737 1.3635e-08 au
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      17011 days (46.57 yr)  
   first obs. used      1973-09-29  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62484  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:08:15  

Additional Information
 Earth MOID = 1.10426 au 
 Jupiter MOID = 2.5992 au 
 T_jup = 3.508 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457036.5 (2015-Jan-14.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1304351936229716 4.9824e-08  
q 2.085591907589241 1.1763e-07 au
tp 2457059.816905657815
(2015-Feb-06.31690566)
7.7437e-05 TDB
node 177.6996026453033 3.5483e-05 deg
peri 245.4483014259994 4.1756e-05 deg
i 6.288786837617494 6.1174e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      17011 days (46.57 yr)  
   first obs. used      1973-09-29  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62484  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:08:15  

Additional Information
 Jupiter MOID = 2.5992 au 
 T_jup = 3.508 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.482437176718979E-15 -5.838503400569677E-15 -2.27741630436678E-12 3.755276851594306E-15 -6.741769445558317E-13 -6.171362827410317E-15
q -5.838503400569677E-15 1.383759422104866E-14 5.515148194742382E-12 -8.739211975622588E-15 1.62684819132678E-12 1.493389017815893E-14
tp -2.27741630436678E-12 5.515148194742382E-12 5.996543506400072E-9 -1.079640045632454E-11 1.714889164011107E-9 7.369793484291333E-12
node 3.755276851594306E-15 -8.739211975622588E-15 -1.079640045632454E-11 1.259026347688444E-9 -1.254114564743643E-9 8.401940423265118E-11
peri -6.741769445558317E-13 1.62684819132678E-12 1.714889164011107E-9 -1.254114564743643E-9 1.743572112137276E-9 -8.142770301320716E-11
i -6.171362827410317E-15 1.493389017815893E-14 7.369793484291333E-12 8.401940423265118E-11 -8.142770301320716E-11 3.742198088652444E-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 16.4   n/a MPO453161  

74783 (1999 RA250)          Discovered 1999-Sep-07 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RA250 = 2003 SL294 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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