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JPL Small-Body Database Browser
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3639 Weidenschilling (1985 TX)
Classification: Main-belt Asteroid          SPK-ID: 2003639
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1001366792161652 3.8842e-08  
a 2.400780465854441 9.0312e-09 au
q 2.160374282476739 9.5418e-08 au
i 2.204146446602849 4.2995e-06 deg
node 222.5779042844166 9.531e-05 deg
peri 183.3809044165027 9.7189e-05 deg
M 344.5650500829124 1.845e-05 deg
tp 2458658.754546253478
(2019-Jun-24.25454625)
6.9661e-05 TDB
period 1358.711026851784
3.72
7.6667e-06
2.099e-08
d
yr
n .2649570018093853 1.4951e-09 deg/d
Q 2.641186649232143 9.9355e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2072  
   data-arc span      22841 days (62.54 yr)  
   first obs. used      1957-01-30  
   last obs. used      2019-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47594  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:32:43  

Additional Information
 Earth MOID = 1.16914 au 
 Jupiter MOID = 2.67755 au 
 T_jup = 3.518 
[ 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 13.2   n/a MPO358664  
diameter diameter 6.499 km 0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.515 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 0.264   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3639 Weidenschilling (1985 TX)          Discovered 1985-Oct-15 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 TX = 1957 BH = 1974 UM = 1974 VY = 1974 WL = 1976 GO5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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