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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2174946021933553 5.8806e-08  
a 2.570554583317649 1.1081e-08 au
q 2.011472836802671 1.5487e-07 au
i 8.170069835969283 3.5476e-06 deg
node 132.708434457134 3.9797e-05 deg
peri 287.2766291652388 4.1544e-05 deg
M 117.4872886592511 1.1815e-05 deg
tp 2458509.222298261070
(2019-Jan-25.72229826)		 4.8019e-05 TDB
period 1505.354108042809
4.12		 9.7339e-06
2.665e-08		 d
yr
n .2391463895947081 1.5464e-09 deg/d
Q 3.129636329832628 1.3491e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1143  
   data-arc span      8712 days (23.85 yr)  
   first obs. used      1996-06-17  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52998  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:08:57  

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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