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42791 (1999 AD6)
Classification: Main-belt Asteroid          SPK-ID: 2042791
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .217494598156623 5.8329e-08  
a 2.570554583973154 1.0962e-08 au
q 2.011472847692247 1.5352e-07 au
i 8.170070608470814 3.5267e-06 deg
node 132.7084269683056 3.9613e-05 deg
peri 287.2766367678407 4.1343e-05 deg
M 117.4872882689235 1.1813e-05 deg
tp 2458509.222299705322
(2019-Jan-25.72229971)		 4.8014e-05 TDB
period 1505.354108618619
4.12		 9.629e-06
2.636e-08		 d
yr
n .2391463895032328 1.5297e-09 deg/d
Q 3.12963632025406 1.3346e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1157  
   data-arc span      8737 days (23.92 yr)  
   first obs. used      1996-06-17  
   last obs. used      2020-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53327  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:05:20  

Additional Information
 Earth MOID = 1.04207 au 
 Jupiter MOID = 2.2542 au 
 T_jup = 3.382 
[ 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 14.8   n/a MPO385088  

42791 (1999 AD6)          Discovered 1999-Jan-15 by Spacewatch at Kitt Peak
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 AD6 = 2001 OA26 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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