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JPL Small-Body Database Browser
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17632 (1996 HW21)
Classification: Main-belt Asteroid          SPK-ID: 2017632
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09875445711377195 3.8144e-08  
a 2.275561384979088 8.0509e-09 au
q 2.050839555776415 8.7323e-08 au
i 2.380827574147286 3.8579e-06 deg
node 221.5618007361421 9.3647e-05 deg
peri 289.7538031763056 9.5735e-05 deg
M 57.40488315027256 2.185e-05 deg
tp 2458800.570170099672
(2019-Nov-13.07017010)
7.5683e-05 TDB
period 1253.808645088695
3.43
6.6539e-06
1.822e-08
d
yr
n .2871251537546493 1.5238e-09 deg/d
Q 2.500283214181761 8.8459e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1478  
   data-arc span      9215 days (25.23 yr)  
   first obs. used      1994-11-11  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5126  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:08:27  

Additional Information
 Earth MOID = 1.06283 au 
 Jupiter MOID = 2.49325 au 
 T_jup = 3.602 
[ 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 14.8   n/a MPO309292  
diameter diameter 3.194 km 0.246 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.190   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17632 (1996 HW21)          Discovered 1996-Apr-21 by JPL/GEODSS NEAT at Haleakala
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

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