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JPL Small-Body Database Browser
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58884 (1998 HD139)
Classification: Main-belt Asteroid          SPK-ID: 2058884
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1954869204069089 3.4054e-08  
a 2.466648644639995 1.0457e-08 au
q 1.984451097373447 8.4686e-08 au
i 12.07234067166254 4.4697e-06 deg
node 163.1197452558725 1.595e-05 deg
peri 290.2497849171123 1.9159e-05 deg
M 239.282120120952 1.0971e-05 deg
tp 2459074.991529053693
(2020-Aug-13.49152905)
4.4212e-05 TDB
period 1415.009529909551
3.87
8.9981e-06
2.464e-08
d
yr
n .2544152476648067 1.6178e-09 deg/d
Q 2.948846191906544 1.2501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1219  
   data-arc span      9397 days (25.73 yr)  
   first obs. used      1994-03-05  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53812  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 05:08:46  

Additional Information
 Earth MOID = 1.03718 au 
 Jupiter MOID = 2.31302 au 
 T_jup = 3.430 
[ 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 14.7   n/a MPO502542  
diameter diameter 2.928 km 0.426 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.210   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

58884 (1998 HD139)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HD139 = 2000 SD221 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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