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175620 (2006 WE99)
Classification: Outer Main-belt Asteroid          SPK-ID: 2175620
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1241445633893457 7.7804e-08  
a 3.95811783923159 5.5837e-08 au
q 3.466739028236604 3.146e-07 au
i 7.475657389294089 6.0014e-06 deg
node 75.87647340263906 6.1204e-05 deg
peri 223.6856162788323 6.6409e-05 deg
M 36.2446662252133 2.4652e-05 deg
tp 2458910.916968420243
(2020-Mar-02.41696842)
0.00019809 TDB
period 2876.28228443147
7.87
6.0863e-05
1.666e-07
d
yr
n .1251615677461776 2.6485e-09 deg/d
Q 4.449496650226576 6.2769e-08 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      8018 days (21.95 yr)  
   first obs. used      1998-12-15  
   last obs. used      2020-11-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52712  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:06:08  

Additional Information
 Earth MOID = 2.45456 au 
 Jupiter MOID = .787115 au 
 T_jup = 3.031 
[ 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 14.44   n/a E2021B55  
diameter diameter 8.046 km 0.550 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.047   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

175620 (2006 WE99)          Discovered 2006-Nov-19 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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