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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08123585067946518 7.9087e-08  
a 2.563000258230708 1.4608e-08 au
q 2.354792751961647 2.0788e-07 au
i 3.405491092711856 7.0905e-06 deg
node 179.9149759418533 6.7514e-05 deg
peri 323.4468890925901 7.82e-05 deg
M 193.8995889299566 3.5643e-05 deg
tp 2459691.995898130552
(2022-Apr-22.49589813)
0.00014868 TDB
period 1498.723102027863
4.10
1.2813e-05
3.508e-08
d
yr
n .2402044777403499 2.0536e-09 deg/d
Q 2.771207764499768 1.5795e-08 au
  Orbit Determination Parameters
   # obs. used (total)      739  
   data-arc span      8544 days (23.39 yr)  
   first obs. used      1997-01-09  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55176  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 22:35:21  

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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