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JPL Small-Body Database Browser
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17631 (1996 HV21)
Classification: Main-belt Asteroid          SPK-ID: 2017631
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09899893256346691 3.4146e-08  
a 2.190874304060737 9.5421e-09 au
q 1.973980086577996 7.5037e-08 au
i 4.476139117349695 3.8833e-06 deg
node 37.83117468549997 6.464e-05 deg
peri 188.5034179002116 7.0894e-05 deg
M 21.74079435801093 3.0802e-05 deg
tp 2458528.968467944109
(2019-Feb-14.46846794)
0.00010126 TDB
period 1184.471510841194
3.24
7.7382e-06
2.119e-08
d
yr
n .3039330171346488 1.9856e-09 deg/d
Q 2.407768521543479 1.0487e-08 au
  Orbit Determination Parameters
   # obs. used (total)      983  
   data-arc span      13580 days (37.18 yr)  
   first obs. used      1981-10-30  
   last obs. used      2019-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55569  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:22:12  

Additional Information
 Earth MOID = .964618 au 
 Jupiter MOID = 2.56849 au 
 T_jup = 3.662 
[ 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 15.3   n/a MPO431701  
diameter diameter 2.209 km 0.632 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.228   0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17631 (1996 HV21)          Discovered 1996-Apr-21 by JPL/GEODSS NEAT at Haleakala
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 HV21 = 1981 UK2 = 1999 CY54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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