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85856 (1999 AT19)
Classification: Main-belt Asteroid          SPK-ID: 2085856
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1872037671411538 3.8353e-08  
a 2.2764685112239 7.1011e-09 au
q 1.850305030144572 8.899e-08 au
i 5.010890945706556 4.1547e-06 deg
node 318.5931451041978 4.319e-05 deg
peri 36.34307040301811 4.4289e-05 deg
M 318.9832820614106 1.0378e-05 deg
tp 2459539.438527352316
(2021-Nov-20.93852735)
3.6333e-05 TDB
period 1254.558444287941
3.43
5.8701e-06
1.607e-08
d
yr
n .2869535505811592 1.3427e-09 deg/d
Q 2.702631992303227 8.4304e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1070  
   data-arc span      10782 days (29.52 yr)  
   first obs. used      1992-02-01  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53148  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:54:21  

Additional Information
 Earth MOID = .847104 au 
 Jupiter MOID = 2.74145 au 
 T_jup = 3.580 
[ 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 15.67   n/a MPO637177  
diameter diameter 3.216 km 0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.110   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85856 (1999 AT19)          Discovered 1999-Jan-13 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1999 AT19 = 2001 XS17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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