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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 
[ show covariance matrix ]

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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