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58842 (1998 HP55)
Classification: Main-belt Asteroid          SPK-ID: 2058842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08123571783726817 1.3337e-07  
a 2.563000264651169 1.9016e-08 au
q 2.354793098335123 3.5373e-07 au
i 3.405492485696061 7.7121e-06 deg
node 179.9150037156224 6.8583e-05 deg
peri 323.446833525857 9.2529e-05 deg
M 193.8996031136297 5.1414e-05 deg
tp 2459691.995841680577
(2022-Apr-22.49584168)
0.00021079 TDB
period 1498.723107659443
4.10
1.6679e-05
4.566e-08
d
yr
n .2402044768377611 2.6732e-09 deg/d
Q 2.771207430967215 2.056e-08 au
  Orbit Determination Parameters
   # obs. used (total)      701  
   data-arc span      7791 days (21.33 yr)  
   first obs. used      1997-01-09  
   last obs. used      2018-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55343  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:29:21  

Additional Information
 Earth MOID = 1.36798 au 
 Jupiter MOID = 2.22961 au 
 T_jup = 3.427 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO474468  
diameter diameter 2.392 km 0.322 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.234   0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58842 (1998 HP55)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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