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JPL Small-Body Database Browser
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52640 (1997 WJ46)
Classification: Main-belt Asteroid          SPK-ID: 2052640
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1470018688889142 3.2274e-08  
a 2.320029190863932 9.0415e-09 au
q 1.978980563930099 7.5996e-08 au
i 9.052531591368046 3.8909e-06 deg
node 76.00095950306569 2.313e-05 deg
peri 312.966504845025 2.6697e-05 deg
M 47.80248291946374 1.2845e-05 deg
tp 2458429.109575285080
(2018-Nov-06.60957529)
4.5966e-05 TDB
period 1290.739499898419
3.53
7.5453e-06
2.066e-08
d
yr
n .2789098807531125 1.6304e-09 deg/d
Q 2.661077817797766 1.0371e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1195  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1997-11-26  
   last obs. used      2019-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54333  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:06:59  

Additional Information
 Earth MOID = .996899 au 
 Jupiter MOID = 2.77373 au 
 T_jup = 3.547 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO412529  
diameter diameter 3.097 km 0.299 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.410 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.221   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

52640 (1997 WJ46)          Discovered 1997-Nov-26 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WJ46 = 1999 GT43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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