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52235 (1979 MW2)
Classification: Main-belt Asteroid          SPK-ID: 2052235
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1445790741374569 5.1402e-08  
a 3.039232623939775 1.6147e-08 au
q 2.599823185082208 1.5328e-07 au
i 3.645830383622232 4.9004e-06 deg
node 167.4447110971465 5.9773e-05 deg
peri 201.1881221820094 6.085e-05 deg
M 228.782138366485 1.3525e-05 deg
tp 2459905.898928750777
(2022-Nov-22.39892875)
7.575e-05 TDB
period 1935.282370776105
5.30
1.5423e-05
4.223e-08
d
yr
n .1860193661845994 1.4825e-09 deg/d
Q 3.478642062797341 1.8482e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1278  
   data-arc span      15215 days (41.66 yr)  
   first obs. used      1979-06-23  
   last obs. used      2021-02-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52115  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:43:44  

Additional Information
 Earth MOID = 1.59776 au 
 Jupiter MOID = 1.98399 au 
 T_jup = 3.221 
[ 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 14.17   n/a E2021B10  
diameter diameter 10.463 km 0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.360 h n/a LCDB (Rev. 2020-October); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.028   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52235 (1979 MW2)          Discovered 1979-Jun-25 by Helin, E. F., Bus, S. J. at Siding Spring
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1979 MW2 = 1990 QL8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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