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187806 (1999 RB51)
Classification: Main-belt Asteroid          SPK-ID: 2187806
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3209650165350542 5.0832e-08  
a 2.735766877695688 1.9808e-08 au
q 1.857681416560038 1.4017e-07 au
i 11.05559689082748 6.3485e-06 deg
node 145.2695720417313 2.9311e-05 deg
peri 180.5488717678379 3.0516e-05 deg
M 255.0606452945244 1.3167e-05 deg
tp 2459682.284635829772
(2022-Apr-12.78463583)
6.4206e-05 TDB
period 1652.787644687774
4.53
1.795e-05
4.914e-08
d
yr
n .2178138257247241 2.3656e-09 deg/d
Q 3.613852338831338 2.6166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      322  
   data-arc span      10806 days (29.59 yr)  
   first obs. used      1990-08-16  
   last obs. used      2020-03-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57809  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:47:10  

Additional Information
 Earth MOID = .843984 au 
 Jupiter MOID = 1.7534 au 
 T_jup = 3.250 
[ 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 16.00   n/a E2021B55  

187806 (1999 RB51)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1999 RB51 = 1990 QW7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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