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JPL Small-Body Database Browser
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52745 (1998 HL137)
Classification: Main-belt Asteroid          SPK-ID: 2052745
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1198988702640961 4.927e-08  
a 3.121520721534278 2.5348e-08 au
q 2.747253913516353 1.524e-07 au
i 14.07669318701591 5.3688e-06 deg
node 46.22789753695743 2.0818e-05 deg
peri 174.0644693290307 3.0947e-05 deg
M 347.0734868866279 2.4869e-05 deg
tp 2459072.831363269874
(2020-Aug-11.33136327)
0.00013925 TDB
period 2014.409496882638
5.52
2.4536e-05
6.718e-08
d
yr
n .1787124219564649 2.1768e-09 deg/d
Q 3.495787529552205 2.8387e-08 au
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      7986 days (21.86 yr)  
   first obs. used      1998-03-24  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54851  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:34:54  

Additional Information
 Earth MOID = 1.73929 au 
 Jupiter MOID = 1.48207 au 
 T_jup = 3.159 
[ 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 13.9   n/a MPO296521  
diameter diameter 8.631 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.079   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52745 (1998 HL137)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HL137 = 2000 SD209 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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