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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1210459947387258 3.0623e-08  
a 2.27676456798852 7.8214e-09 au
q 2.001171336070465 6.985e-08 au
i 7.126266708321286 4.6608e-06 deg
node 337.6267822608504 2.8243e-05 deg
peri 117.6572047106892 3.4563e-05 deg
M 104.7347860403554 2.0284e-05 deg
tp 2458635.440157487975
(2019-May-31.94015749)
7.0138e-05 TDB
period 1254.803186915289
3.44
6.466e-06
1.77e-08
d
yr
n .2868975818311366 1.4784e-09 deg/d
Q 2.552357799906576 8.7681e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1034  
   data-arc span      7779 days (21.30 yr)  
   first obs. used      1999-01-10  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50992  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:38:20  

Additional Information
 Earth MOID = 1.02931 au 
 Jupiter MOID = 2.58904 au 
 T_jup = 3.589 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456978.5 (2014-Nov-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1204880271608691 3.0685e-08  
q 2.003018080430858 6.9981e-08 au
tp 2457381.051231792235
(2015-Dec-24.55123179)
6.8965e-05 TDB
node 337.6625574517728 2.8219e-05 deg
peri 117.8459140536945 3.459e-05 deg
i 7.129057498156118 4.6618e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1034  
   data-arc span      7779 days (21.30 yr)  
   first obs. used      1999-01-10  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50992  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:38:20  

Additional Information
 Jupiter MOID = 2.58904 au 
 T_jup = 3.589 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.415761216052516E-16 -2.136977951108764E-15 3.039863940813581E-13 -5.932318438620531E-16 9.503695982628159E-14 -1.066610928992549E-15
q -2.136977951108764E-15 4.897382999943337E-15 -6.01939514734691E-13 1.608111605241108E-15 -1.958211798215169E-13 2.644994292396778E-15
tp 3.039863940813581E-13 -6.01939514734691E-13 4.756142987999359E-9 -4.387803715458368E-12 1.387140206857719E-9 1.143227998268447E-13
node -5.932318438620531E-16 1.608111605241108E-15 -4.387803715458368E-12 7.963064814517389E-10 -7.909656874981684E-10 1.889585684526495E-11
peri 9.503695982628159E-14 -1.958211798215169E-13 1.387140206857719E-9 -7.909656874981684E-10 1.196480061856925E-9 -1.871473497841259E-11
i -1.066610928992549E-15 2.644994292396778E-15 1.143227998268447E-13 1.889585684526495E-11 -1.871473497841259E-11 2.173235310316589E-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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