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58859 (1998 HD98)
Classification: Main-belt Asteroid          SPK-ID: 2058859
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1242354550348427 3.8346e-08  
a 3.054410666477688 1.7759e-08 au
q 2.674944567464555 1.1738e-07 au
i 10.49433228832432 4.8479e-06 deg
node 16.85931050507681 2.0763e-05 deg
peri 43.22710674072733 2.7577e-05 deg
M 210.2660703626855 1.9165e-05 deg
tp 2459811.474670700040
(2022-Aug-19.97467070)
0.00010696 TDB
period 1949.797765671266
5.34
1.7005e-05
4.656e-08
d
yr
n .1846345330465907 1.6102e-09 deg/d
Q 3.433876765490821 1.9965e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1477  
   data-arc span      8151 days (22.32 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50794  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:49:16  

Additional Information
 Earth MOID = 1.69754 au 
 Jupiter MOID = 2.02398 au 
 T_jup = 3.199 
[ 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 13.3   n/a MPO395549  
diameter diameter 7.790 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.153   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58859 (1998 HD98)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HD98 = 2000 QQ142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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