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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2174945827935895 6.4326e-08  
a 2.570554587612859 1.2384e-08 au
q 2.011472890031853 1.7051e-07 au
i 8.170069555476537 3.6555e-06 deg
node 132.7084383453585 4.195e-05 deg
peri 287.2766237053664 4.3774e-05 deg
M 117.4872881225287 1.1842e-05 deg
tp 2458509.222299274061
(2019-Jan-25.72229927)
4.8065e-05 TDB
period 1505.354111815815
4.12
1.0878e-05
2.978e-08
d
yr
n .2391463889953138 1.7282e-09 deg/d
Q 3.129636285193865 1.5078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1051  
   data-arc span      8631 days (23.63 yr)  
   first obs. used      1996-06-17  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53814  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 07:10:29  

Additional Information
 Earth MOID = 1.04207 au 
 Jupiter MOID = 2.2542 au 
 T_jup = 3.382 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456802.5 (2014-May-25.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2156620957647785 6.4056e-08  
q 2.017307719008856 1.6949e-07 au
tp 2457003.568936382675
(2014-Dec-12.06893638)
4.6085e-05 TDB
node 132.760508950319 4.1894e-05 deg
peri 287.4358004869924 4.3767e-05 deg
i 8.172146536299504 3.6566e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1051  
   data-arc span      8631 days (23.63 yr)  
   first obs. used      1996-06-17  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53814  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 07:10:29  

Additional Information
 Jupiter MOID = 2.2542 au 
 T_jup = 3.382 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.103231455138147E-15 -1.084351601010695E-14 -1.65470480203169E-12 -4.473210639139899E-14 -4.473328416072606E-13 -1.820293353373862E-14
q -1.084351601010695E-14 2.872600602147522E-14 4.310682757799161E-12 1.196309820298263E-13 1.159946251399924E-12 4.839954828007891E-14
tp -1.65470480203169E-12 4.310682757799161E-12 2.123787312098919E-9 1.475000423483627E-11 6.255467391024607E-10 8.804183152372867E-12
node -4.473210639139899E-14 1.196309820298263E-13 1.475000423483627E-11 1.755094321662167E-9 -1.733655402745631E-9 2.424672977981481E-11
peri -4.473328416072606E-13 1.159946251399924E-12 6.255467391024607E-10 -1.733655402745631E-9 1.915589834831459E-9 -2.143579772013595E-11
i -1.820293353373862E-14 4.839954828007891E-14 8.804183152372867E-12 2.424672977981481E-11 -2.143579772013595E-11 1.337062693143458E-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 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

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