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JPL Small-Body Database Browser
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91216 (1999 AU3)
Classification: Main-belt Asteroid          SPK-ID: 2091216
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1210459885713176 3.8887e-08  
a 2.276764569334532 9.0292e-09 au
q 2.001171351295283 9.1132e-08 au
i 7.126270272430688 5.1076e-06 deg
node 337.6267654675174 2.9893e-05 deg
peri 117.6572203642198 3.6638e-05 deg
M 104.734786024012 2.0482e-05 deg
tp 2458635.440157221209
(2019-May-31.94015722)
7.0992e-05 TDB
period 1254.803188028038
3.44
7.4644e-06
2.044e-08
d
yr
n .2868975815767181 1.7067e-09 deg/d
Q 2.552357787373781 1.0122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      941  
   data-arc span      7691 days (21.06 yr)  
   first obs. used      1999-01-10  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:25:44  

Additional Information
 Earth MOID = 1.02931 au 
 Jupiter MOID = 2.58904 au 
 T_jup = 3.589 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456690.5 (2014-Feb-02.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1205649653509833 3.9006e-08  
q 2.00279700694755 9.1407e-08 au
tp 2456125.474236173278
(2012-Jul-16.97423617)
7.0435e-05 TDB
node 337.6668865174651 2.9873e-05 deg
peri 117.785232874562 3.6661e-05 deg
i 7.128563184342063 5.1084e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      941  
   data-arc span      7691 days (21.06 yr)  
   first obs. used      1999-01-10  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:25:44  

Additional Information
 Jupiter MOID = 2.58904 au 
 T_jup = 3.589 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.521481096319519E-15 -3.553025981344068E-15 7.374558389987006E-13 1.068372729858008E-15 2.526412824837983E-13 -2.156245301298221E-15
q -3.553025981344068E-15 8.355211299787441E-15 -1.704999915220564E-12 -2.704444368867275E-15 -5.800068495134522E-13 5.354586740230481E-15
tp 7.374558389987006E-13 -1.704999915220564E-12 4.961019387062902E-9 -2.014830199734394E-11 1.504049276702531E-9 2.811807700342476E-12
node 1.068372729858008E-15 -2.704444368867275E-15 -2.014830199734394E-11 8.924038691137826E-10 -8.908829473377161E-10 -1.282729895577222E-12
peri 2.526412824837983E-13 -5.800068495134522E-13 1.504049276702531E-9 -8.908829473377161E-10 1.344020808421502E-9 2.121171105120862E-12
i -2.156245301298221E-15 5.354586740230481E-15 2.811807700342476E-12 -1.282729895577222E-12 2.121171105120862E-12 2.609563994103172E-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 15.6   n/a MPO453351  
diameter diameter 2.443 km 0.374 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.225   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91216 (1999 AU3)          Discovered 1999-Jan-10 by Kobayashi, T. at Oizumi
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 AU3 = 2001 TW19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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