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102944 (1999 XE52)
Classification: Main-belt Asteroid          SPK-ID: 2102944
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0508356964621258 6.0838e-08  
a 2.760671317467086 2.3142e-08 au
q 2.620330668340632 1.736e-07 au
i 3.895518196872115 5.0277e-06 deg
node 264.5900756162322 8.5537e-05 deg
peri 135.4617734510727 0.00010128 deg
M 235.4313911743666 5.8209e-05 deg
tp 2459780.231094752103
(2022-Jul-19.73109475)		 0.00027539 TDB
period 1675.407601307421
4.59		 2.1067e-05
5.768e-08		 d
yr
n .2148730850445411 2.7019e-09 deg/d
Q 2.901011966593539 2.4319e-08 au
   Orbit Determination Parameters
   # obs. used (total)      496  
   data-arc span      8027 days (21.98 yr)  
   first obs. used      1998-07-24  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54424  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:51:38  

Additional Information
 Earth MOID = 1.62896 au 
 Jupiter MOID = 2.32539 au 
 T_jup = 3.336 
[ 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 15.65   n/a E2021B55  
diameter diameter 4.428 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102944 (1999 XE52)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XE52 = 1998 OZ3 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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