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312972 (1998 WO)
Classification: Main-belt Asteroid          SPK-ID: 2312972
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2409867020511338 1.1109e-07  
a 2.605590518182635 1.2605e-08 au
q 1.977677852310097 2.9101e-07 au
i 14.1210944212509 1.1545e-05 deg
node 32.57839431904498 1.7714e-05 deg
peri 18.70166452241044 3.0885e-05 deg
M 41.78400543821201 1.7381e-05 deg
tp 2458822.194293248964
(2019-Dec-04.69429325)
7.4182e-05 TDB
period 1536.23506787289
4.21
1.1148e-05
3.052e-08
d
yr
n .2343391369775624 1.7005e-09 deg/d
Q 3.233503184055173 1.5643e-08 au
  Orbit Determination Parameters
   # obs. used (total)      379  
   data-arc span      7739 days (21.19 yr)  
   first obs. used      1998-11-17  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4692  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:49:12  

Additional Information
 Earth MOID = .992184 au 
 Jupiter MOID = 2.20537 au 
 T_jup = 3.329 
[ 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 16.4   n/a MPO503319  
diameter diameter 3.144 km 0.697 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.027   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

312972 (1998 WO)          Discovered 1998-Nov-17 by Griffin, I. P. at Cocoa
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09

[ show close-approach data ]
Alternate Designations
 1998 WO = 2002 RE173 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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