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49465 (1999 AT8)
Classification: Main-belt Asteroid          SPK-ID: 2049465
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .126993577083871 6.0512e-08  
a 2.72874587918694 2.1041e-08 au
q 2.382212679036118 1.6462e-07 au
i 4.539434494810139 7.0542e-06 deg
node 189.1526833329058 6.9475e-05 deg
peri 186.2948596176053 7.3071e-05 deg
M 226.5269109171874 2.5123e-05 deg
tp 2459210.927762439845
(2020-Dec-27.42776244)
0.00011896 TDB
period 1646.429223961386
4.51
1.9043e-05
5.214e-08
d
yr
n .2186550109538406 2.529e-09 deg/d
Q 3.075279079337762 2.3713e-08 au
  Orbit Determination Parameters
   # obs. used (total)      430  
   data-arc span      7473 days (20.46 yr)  
   first obs. used      1998-11-21  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56551  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:40:54  

Additional Information
 Earth MOID = 1.38247 au 
 Jupiter MOID = 2.38399 au 
 T_jup = 3.339 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO250664  
diameter diameter 4.038 km 0.826 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.057   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

49465 (1999 AT8)          Discovered 1999-Jan-10 by McClusky, J. V. at Fair Oaks Ranch
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 AT8 = 2000 EU187 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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