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JPL Small-Body Database Browser
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20222 (1997 HP11)
Classification: Main-belt Asteroid          SPK-ID: 2020222
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08058061370831261 3.0358e-08  
a 2.921479940842421 1.2662e-08 au
q 2.686065294272814 9.2519e-08 au
i 1.457125181352708 3.5588e-06 deg
node 326.9416581823224 0.000141 deg
peri 109.0812994406021 0.00014347 deg
M 284.5922377373156 2.5519e-05 deg
tp 2458982.546602981244
(2020-May-13.04660298)
0.00012976 TDB
period 1823.907419426344
4.99
1.1858e-05
3.247e-08
d
yr
n .1973784393690483 1.2832e-09 deg/d
Q 3.156894587412028 1.3683e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1882  
   data-arc span      9640 days (26.39 yr)  
   first obs. used      1993-07-13  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52289  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:42:16  

Additional Information
 Earth MOID = 1.70154 au 
 Jupiter MOID = 2.03449 au 
 T_jup = 3.274 
[ 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 14.0   n/a MPO412336  
diameter diameter 4.557 km 0.296 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.257   0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20222 (1997 HP11)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 HP11 = 1993 ON14 = 1999 TQ15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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