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JPL Small-Body Database Browser
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172036 (2001 WO28)
Classification: Main-belt Asteroid          SPK-ID: 2172036
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2426597567494598 5.4409e-08  
a 3.154762507316646 2.7916e-08 au
q 2.389228604688873 1.7594e-07 au
i 10.96324934913726 6.6675e-06 deg
node 77.65053159968521 3.2083e-05 deg
peri 292.7419873107552 3.4726e-05 deg
M 139.7686717165201 1.4098e-05 deg
tp 2458205.886809115810
(2018-Mar-28.38680912)
7.4447e-05 TDB
period 2046.672871718341
5.60
2.7166e-05
7.438e-08
d
yr
n .1758952321959259 2.3347e-09 deg/d
Q 3.920296409944419 3.469e-08 au
  Orbit Determination Parameters
   # obs. used (total)      426  
   data-arc span      6712 days (18.38 yr)  
   first obs. used      2001-09-19  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57181  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:42:22  

Additional Information
 Earth MOID = 1.41579 au 
 Jupiter MOID = 1.68405 au 
 T_jup = 3.133 
[ 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 14.7   n/a MPO422655  
diameter diameter 8.496 km 0.319 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 26.288 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.035   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172036 (2001 WO28)          Discovered 2001-Nov-17 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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