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70949 (1999 WX17)
Classification: Main-belt Asteroid          SPK-ID: 2070949
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07771073009399282 6.7821e-08  
a 2.587605087335845 1.6955e-08 au
q 2.386520406804046 1.6839e-07 au
i 5.034692478457951 4.9289e-06 deg
node 229.7262474928431 5.7854e-05 deg
peri 325.2854567381602 6.4142e-05 deg
M 194.4018529603291 2.9179e-05 deg
tp 2459699.856142225432
(2022-Apr-30.35614223)
0.00012541 TDB
period 1520.356451457405
4.16
1.4943e-05
4.091e-08
d
yr
n .2367865770260034 2.3272e-09 deg/d
Q 2.788689767867643 1.8272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      8012 days (21.94 yr)  
   first obs. used      1998-08-25  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57997  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 06:30:36  

Additional Information
 Earth MOID = 1.38656 au 
 Jupiter MOID = 2.1823 au 
 T_jup = 3.412 
[ 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 15.6   n/a MPO493362  
diameter diameter 4.069 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70949 (1999 WX17)          Discovered 1999-Nov-30 by Spacewatch at Kitt Peak
Reference: 20031109/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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