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39982 (1998 HD16)
Classification: Main-belt Asteroid          SPK-ID: 2039982
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3142896474707146 4.6755e-08  
a 2.605302227374738 1.277e-08 au
q 1.786482708778464 1.2555e-07 au
i 5.61763118190994 3.3401e-06 deg
node 107.738299506319 5.8694e-05 deg
peri 323.024997683099 5.91e-05 deg
M 203.1825890787641 6.9557e-06 deg
tp 2459669.578957527215
(2022-Mar-31.07895753)
3.211e-05 TDB
period 1535.980114037066
4.21
1.1293e-05
3.092e-08
d
yr
n .2343780343964222 1.7233e-09 deg/d
Q 3.424121745971012 1.6784e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      9605 days (26.30 yr)  
   first obs. used      1993-01-21  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50357  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:12:18  

Additional Information
 Earth MOID = .804903 au 
 Jupiter MOID = 1.89595 au 
 T_jup = 3.334 
[ 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 14.9   n/a MPO436050  
diameter diameter 2.742 km 0.294 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.235   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39982 (1998 HD16)          Discovered 1998-Apr-22 by Spacewatch at Kitt Peak
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HD16 = 1993 BO2 = 2000 TT3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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