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39986 (1998 HJ32)
Classification: Main-belt Asteroid          SPK-ID: 2039986
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1962143489156967 5.5837e-08  
a 2.530734812906906 1.7764e-08 au
q 2.03416832931409 1.4262e-07 au
i 13.00824016894761 6.2489e-06 deg
node 203.6995016986271 2.5352e-05 deg
peri 159.3539653005147 3.1227e-05 deg
M 21.73963915590123 2.2622e-05 deg
tp 2458911.698926431332
(2020-Mar-03.19892643)
9.2206e-05 TDB
period 1470.511366608516
4.03
1.5483e-05
4.239e-08
d
yr
n .244812796537764 2.5776e-09 deg/d
Q 3.027301296499722 2.1249e-08 au
  Orbit Determination Parameters
   # obs. used (total)      783  
   data-arc span      7922 days (21.69 yr)  
   first obs. used      1998-03-22  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53057  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:12:26  

Additional Information
 Earth MOID = 1.03815 au 
 Jupiter MOID = 2.46028 au 
 T_jup = 3.389 
[ 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 14.1   n/a MPO449244  
diameter diameter 3.635 km 0.819 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.443   0.287 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39986 (1998 HJ32)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HJ32 = 1999 NZ51 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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