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31364 (1998 WM6)
Classification: Main-belt Asteroid          SPK-ID: 2031364
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06797324639161793 2.6481e-08  
a 2.164474814105479 5.8418e-09 au
q 2.017348434257836 5.7204e-08 au
i 2.568337886815294 3.5102e-06 deg
node 92.89912216506049 0.00010483 deg
peri 200.2921455441679 0.00011187 deg
M 101.5200773310205 3.987e-05 deg
tp 2458872.497864631051
(2020-Jan-23.99786463)
0.00012869 TDB
period 1163.127253615092
3.18
4.7088e-06
1.289e-08
d
yr
n .3095104158905154 1.253e-09 deg/d
Q 2.311601193953122 6.2389e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1268  
   data-arc span      10752 days (29.44 yr)  
   first obs. used      1991-08-06  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50983  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 03:42:43  

Additional Information
 Earth MOID = .999446 au 
 Jupiter MOID = 2.77627 au 
 T_jup = 3.690 
[ 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 16.16   n/a E2021B10  
diameter diameter 1.784 km 0.366 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.291   0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

31364 (1998 WM6)          Discovered 1998-Nov-24 by Klet at Klet
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WM6 = 1991 PB6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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