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22398 (1994 WF1)
Classification: Main-belt Asteroid          SPK-ID: 2022398
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08993194592381892 4.3828e-08  
a 2.901028039757127 1.3568e-08 au
q 2.640132942962206 1.261e-07 au
i .9659670721086274 3.1031e-06 deg
node 267.2182966458655 0.00029184 deg
peri 100.597166394416 0.00029242 deg
M 152.1526059804288 1.8169e-05 deg
tp 2458437.713126356699
(2018-Nov-15.21312636)
9.0816e-05 TDB
period 1804.788506526864
4.94
1.2661e-05
3.466e-08
d
yr
n .1994693553832434 1.3993e-09 deg/d
Q 3.161923136552047 1.4788e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1736  
   data-arc span      9608 days (26.31 yr)  
   first obs. used      1994-11-27  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49837  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:05:28  

Additional Information
 Earth MOID = 1.63751 au 
 Jupiter MOID = 2.28998 au 
 T_jup = 3.281 
[ 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 13.98   n/a E2021B10  
diameter diameter 5.305 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.190   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22398 (1994 WF1)          Discovered 1994-Nov-27 by Kobayashi, T. at Oizumi
Reference: 20010309/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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