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79209 (1994 AT12)
Classification: Main-belt Asteroid          SPK-ID: 2079209
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06749966579515496 3.8809e-08  
a 2.78720950264151 1.7968e-08 au
q 2.599073792712128 1.0821e-07 au
i 5.493929998789262 4.2736e-06 deg
node 95.9961150925545 5.9035e-05 deg
peri 227.612018280139 7.2439e-05 deg
M 36.99326494649907 4.1919e-05 deg
tp 2458825.848222486305
(2019-Dec-08.34822249)
0.00019772 TDB
period 1699.623971981427
4.65
1.6435e-05
4.5e-08
d
yr
n .2118115571059585 2.0482e-09 deg/d
Q 2.975345212570892 1.9181e-08 au
  Orbit Determination Parameters
   # obs. used (total)      412  
   data-arc span      9785 days (26.79 yr)  
   first obs. used      1994-01-08  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57847  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:24:02  

Additional Information
 Earth MOID = 1.59012 au 
 Jupiter MOID = 2.23434 au 
 T_jup = 3.321 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456978.5 (2014-Nov-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06966705482027492 3.9094e-08  
q 2.593892864268001 1.0944e-07 au
tp 2457130.406990865759
(2015-Apr-17.90699087)
0.00019041 TDB
node 96.0507362074346 5.912e-05 deg
peri 228.7007184480141 7.1732e-05 deg
i 5.490471755221888 4.2712e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      412  
   data-arc span      9785 days (26.79 yr)  
   first obs. used      1994-01-08  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57847  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:24:02  

Additional Information
 Jupiter MOID = 2.23434 au 
 T_jup = 3.321 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.528364958952541E-15 -4.228228898908252E-15 2.34960636951351E-12 -1.040233083551293E-15 5.047480219017746E-13 -8.807026369478654E-16
q -4.228228898908252E-15 1.197644582641992E-14 -6.542856484043347E-12 4.48146890027368E-15 -1.413356473086007E-12 2.673663938873899E-15
tp 2.34960636951351E-12 -6.542856484043347E-12 3.625709123793693E-8 5.525408004411418E-12 7.784368556956613E-9 -5.245006151403107E-12
node -1.040233083551293E-15 4.48146890027368E-15 5.525408004411418E-12 3.495172954498648E-9 -3.477711414763612E-9 -5.894682491766451E-11
peri 5.047480219017746E-13 -1.413356473086007E-12 7.784368556956613E-9 -3.477711414763612E-9 5.145445427669228E-9 5.75482084007877E-11
i -8.807026369478654E-16 2.673663938873899E-15 -5.245006151403107E-12 -5.894682491766451E-11 5.75482084007877E-11 1.824323906710753E-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 15.6   n/a MPO436334  
diameter diameter 5.165 km 0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79209 (1994 AT12)          Discovered 1994-Jan-11 by Spacewatch at Kitt Peak
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

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Alternate Designations
 1994 AT12 = 2000 LJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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