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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2174888589547894 5.4337e-08  
a 2.570443530982342 1.0923e-08 au
q 2.011400700421273 1.4358e-07 au
i 8.170113586919451 3.3868e-06 deg
node 132.7092020563608 3.7752e-05 deg
peri 287.1985623496303 3.9105e-05 deg
M 212.3078499397697 1.1004e-05 deg
tp 2460014.040493023167
(2023-Mar-10.54049302)
4.8359e-05 TDB
period 1505.256558305083
4.12
9.5945e-06
2.627e-08
d
yr
n .2391618877285341 1.5244e-09 deg/d
Q 3.129486361543412 1.3298e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1190  
   data-arc span      9152 days (25.06 yr)  
   first obs. used      1996-06-17  
   last obs. used      2021-07-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53711  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:00:38  

Additional Information
 Earth MOID = 1.04166 au 
 Jupiter MOID = 2.2562 au 
 T_jup = 3.382 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457236.5 (2015-Aug-02.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2158990561025576 5.3967e-08  
q 2.017276978078916 1.4224e-07 au
tp 2457003.801176056375
(2014-Dec-12.30117606)
4.0545e-05 TDB
node 132.7609719053948 3.77e-05 deg
peri 287.5148112195625 3.9096e-05 deg
i 8.172005532746793 3.3878e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1190  
   data-arc span      9152 days (25.06 yr)  
   first obs. used      1996-06-17  
   last obs. used      2021-07-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53711  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:00:38  

Additional Information
 Jupiter MOID = 2.2562 au 
 T_jup = 3.382 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.912447861906272E-15 -7.664509879088551E-15 -1.306805229312608E-12 -3.790986764435972E-14 -3.643270467952988E-13 -9.927957207620687E-15
q -7.664509879088551E-15 2.023107210339534E-14 3.434789800923904E-12 1.01005869382657E-13 9.580145560798323E-13 2.639368948171109E-14
tp -1.306805229312608E-12 3.434789800923904E-12 1.643890268419252E-9 2.205172841729424E-11 4.57272512089527E-10 5.344645164146352E-12
node -3.790986764435972E-14 1.01005869382657E-13 2.205172841729424E-11 1.421293327212962E-9 -1.400628733033763E-9 2.55497554718446E-11
peri -3.643270467952988E-13 9.580145560798323E-13 4.57272512089527E-10 -1.400628733033763E-9 1.528512186470373E-9 -2.370509366447198E-11
i -9.927957207620687E-15 2.639368948171109E-14 5.344645164146352E-12 2.55497554718446E-11 -2.370509366447198E-11 1.147705687289068E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.83   n/a E2021B10  

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

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