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190316 (1997 WC22)
Classification: Main-belt Asteroid          SPK-ID: 2190316
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3096866005388152 4.4419e-08  
a 3.110528193191503 1.8196e-08 au
q 2.147239291161883 1.38e-07 au
i 8.252369377568348 4.9029e-06 deg
node 278.6967448829865 3.5404e-05 deg
peri 128.3368389050577 3.7784e-05 deg
M 70.67975058613354 8.1164e-06 deg
tp 2458807.092941742957
(2019-Nov-19.59294174)
4.5558e-05 TDB
period 2003.778165571524
5.49
1.7582e-05
4.814e-08
d
yr
n .1796606062414697 1.5765e-09 deg/d
Q 4.073817095221123 2.3831e-08 au
  Orbit Determination Parameters
   # obs. used (total)      787  
   data-arc span      8448 days (23.13 yr)  
   first obs. used      1997-11-28  
   last obs. used      2021-01-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44502  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:02:35  

Additional Information
 Earth MOID = 1.16813 au 
 Jupiter MOID = 1.43008 au 
 T_jup = 3.128 
[ 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 15.04   n/a E2021B55  
diameter diameter 5.982 km 0.474 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

190316 (1997 WC22)          Discovered 1997-Nov-28 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ show close-approach data ]
Alternate Designations
 1997 WC22 = 2002 PH118 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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