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4826 Wilhelms (1988 JO)
Classification: Main-belt Asteroid          SPK-ID: 2004826
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1921575877221171 4.1681e-08  
a 2.379283766825476 1.1219e-08 au
q 1.922086337685901 9.823e-08 au
i 25.31855223208557 4.9648e-06 deg
node 95.53022333301969 1.054e-05 deg
peri 223.4676824249269 1.6189e-05 deg
M 94.94107713098209 1.4212e-05 deg
tp 2458246.975559994672
(2018-May-08.47555999)
5.2201e-05 TDB
period 1340.502996677994
3.67
9.4811e-06
2.596e-08
d
yr
n .2685559084106074 1.8994e-09 deg/d
Q 2.836481195965052 1.3375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1974  
   data-arc span      13499 days (36.96 yr)  
   first obs. used      1982-12-22  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41216  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:50:03  

Additional Information
 Earth MOID = .953901 au 
 Jupiter MOID = 2.48226 au 
 T_jup = 3.387 
[ 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 12.6   n/a MPO416763  
diameter diameter 7.926 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 54. h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.338   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4826 Wilhelms (1988 JO)          Discovered 1988-May-11 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1988 JO = 1982 YX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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