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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1200582981975518 4.9809e-08  
a 3.122732301492355 2.8272e-08 au
q 2.747822375648659 1.5299e-07 au
i 14.07608122453409 5.5576e-06 deg
node 46.23558477378519 2.1293e-05 deg
peri 173.8848304005878 3.3279e-05 deg
M 275.7736225748177 2.8859e-05 deg
tp 2459072.070014062845
(2020-Aug-10.57001406)
0.00016345 TDB
period 2015.582413162973
5.52
2.7372e-05
7.494e-08
d
yr
n .1786084248646853 2.4256e-09 deg/d
Q 3.497642227336051 3.1666e-08 au
  Orbit Determination Parameters
   # obs. used (total)      761  
   data-arc span      7897 days (21.62 yr)  
   first obs. used      1998-03-24  
   last obs. used      2019-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54724  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 04:15:07  

Additional Information
 Earth MOID = 1.74002 au 
 Jupiter MOID = 1.48074 au 
 T_jup = 3.158 
[ 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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