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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09898080437349327 3.9991e-08  
a 2.275978181284819 8.8557e-09 au
q 2.050700030164727 9.2585e-08 au
i 2.380854240972657 3.9112e-06 deg
node 221.5662358935519 9.4964e-05 deg
peri 289.7310044419569 9.7253e-05 deg
M 302.585246073686 2.3679e-05 deg
tp 2458800.519149129717
(2019-Nov-13.01914913)
8.306e-05 TDB
period 1254.153135953724
3.43
7.3198e-06
2.004e-08
d
yr
n .287046286198724 1.6753e-09 deg/d
Q 2.50125633240491 9.7323e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1415  
   data-arc span      9122 days (24.97 yr)  
   first obs. used      1994-11-11  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51047  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 23:43:40  

Additional Information
 Earth MOID = 1.06318 au 
 Jupiter MOID = 2.49386 au 
 T_jup = 3.601 
[ 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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