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58887 (1998 HD144)
Classification: Main-belt Asteroid          SPK-ID: 2058887
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1971241074565067 5.1785e-08  
a 2.903857940925234 2.0358e-08 au
q 2.331437536139858 1.5035e-07 au
i 7.741818883062534 5.5428e-06 deg
node 132.2641579783369 3.9833e-05 deg
peri 352.6106472958576 4.1953e-05 deg
M 156.0010159054383 1.3242e-05 deg
tp 2457817.275250610677
(2017-Mar-04.77525061)
6.4997e-05 TDB
period 1807.429958988665
4.95
1.9007e-05
5.204e-08
d
yr
n .1991778426653033 2.0946e-09 deg/d
Q 3.47627834571061 2.4371e-08 au
  Orbit Determination Parameters
   # obs. used (total)      690  
   data-arc span      7415 days (20.30 yr)  
   first obs. used      1998-03-24  
   last obs. used      2018-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59506  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:29:35  

Additional Information
 Earth MOID = 1.34745 au 
 Jupiter MOID = 1.60001 au 
 T_jup = 3.243 
[ 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 MPO493285  
diameter diameter 7.413 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.029   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58887 (1998 HD144)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HD144 = 2001 WD41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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