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390725 (2003 HB)
Classification: Aten [NEO, PHA]          SPK-ID: 2390725
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3804986970209548 1.3314e-07  
a .8496369770532216 1.7501e-09 au
q .526351214343648 1.1268e-07 au
i 18.10899576588749 1.7538e-05 deg
node 70.38331860008618 4.0324e-05 deg
peri 306.7490505986777 3.6675e-05 deg
M 25.5031829107907 2.964e-05 deg
tp 2459180.235288772181
(2020-Nov-26.73528877)
2.3528e-05 TDB
period 286.0543355522929
0.78
8.8386e-07
2.42e-09
d
yr
n 1.258502162901807 3.8885e-09 deg/d
Q 1.172922739762795 2.4161e-09 au
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      6560 days (17.96 yr)  
   first obs. used      2003-04-21  
   last obs. used      2021-04-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6314  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:24:35  

Additional Information
 Earth MOID = .0471481 au 
 Jupiter MOID = 4.31487 au 
 T_jup = 6.835 
[ 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 19.7   n/a MPO258313  
diameter diameter 0.293 km 0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
geometric albedo albedo 0.271   0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

390725 (2003 HB)          Discovered 2003-Apr-21 by LINEAR at Socorro
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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