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JPL Small-Body Database Browser
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56217 (1999 HH3)
Classification: Main-belt Asteroid          SPK-ID: 2056217
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0990889304252338 5.2931e-08  
a 2.553880453806792 1.0826e-08 au
q 2.300819171205166 1.3763e-07 au
i 13.231915307621 5.8237e-06 deg
node 172.970162748599 1.6133e-05 deg
peri 336.9571925428248 3.3696e-05 deg
M 18.72120656496786 2.686e-05 deg
tp 2458522.976993417296
(2019-Feb-08.47699342)
0.00011125 TDB
period 1490.730967201497
4.08
9.4791e-06
2.595e-08
d
yr
n .241492266492469 1.5356e-09 deg/d
Q 2.806941736408418 1.1899e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1489  
   data-arc span      7352 days (20.13 yr)  
   first obs. used      1999-03-24  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49434  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:08:57  

Additional Information
 Earth MOID = 1.31575 au 
 Jupiter MOID = 2.1883 au 
 T_jup = 3.395 
[ 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 14.3   n/a MPO474444  
diameter diameter 4.394 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.210   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

56217 (1999 HH3)          Discovered 1999-Apr-25 by Kagawa, T. at Gekko
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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