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91215 (1999 AN)
Classification: Main-belt Asteroid          SPK-ID: 2091215
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1504357893090491 4.8881e-08  
a 2.374317817036005 1.0212e-08 au
q 2.017135442159655 1.1336e-07 au
i 2.328543113517801 5.3066e-06 deg
node 17.06897419063696 9.5661e-05 deg
peri 158.9864983372434 9.6701e-05 deg
M 251.4131345157178 1.5546e-05 deg
tp 2459403.570951088711
(2021-Jul-08.07095109)
5.919e-05 TDB
period 1336.308417641358
3.66
8.6217e-06
2.36e-08
d
yr
n .2693988866996853 1.7381e-09 deg/d
Q 2.731500191912355 1.1749e-08 au
  Orbit Determination Parameters
   # obs. used (total)      817  
   data-arc span      7621 days (20.87 yr)  
   first obs. used      1998-12-17  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55365  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:53:35  

Additional Information
 Earth MOID = 1.02161 au 
 Jupiter MOID = 2.23008 au 
 T_jup = 3.526 
[ 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 15.7   n/a MPO453351  
diameter diameter 2.096 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.231   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91215 (1999 AN)          Discovered 1999-Jan-05 by Sarounova, L., Vasta, L. at Ondrejov
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 AN = 2001 TP3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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