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JPL Small-Body Database Browser
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52731 (1998 HU12)
Classification: Main-belt Asteroid          SPK-ID: 2052731
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1514798693933609 8.0761e-08  
a 3.007958280442526 2.5642e-08 au
q 2.552313152980414 2.5151e-07 au
i 24.33565475052169 7.2288e-06 deg
node 48.05572718064892 9.5174e-06 deg
peri 171.508741761055 1.9107e-05 deg
M 61.71370792061081 1.3071e-05 deg
tp 2458673.848031686855
(2019-Jul-09.34803169)
6.9514e-05 TDB
period 1905.48765509289
5.22
2.4365e-05
6.671e-08
d
yr
n .1889280148511119 2.4158e-09 deg/d
Q 3.463603407904639 2.9526e-08 au
  Orbit Determination Parameters
   # obs. used (total)      798  
   data-arc span      9574 days (26.21 yr)  
   first obs. used      1993-04-17  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49042  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:34:30  

Additional Information
 Earth MOID = 1.54527 au 
 Jupiter MOID = 1.52482 au 
 T_jup = 3.099 
[ 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 14.3   n/a MPO302353  
diameter diameter 8.234 km 0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.086   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52731 (1998 HU12)          Discovered 1998-Apr-23 by NEAT at Haleakala
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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