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JPL Small-Body Database Browser
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4142 Dersu-Uzala (1981 KE)
Classification: Mars-crossing Asteroid          SPK-ID: 2004142
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1514792742551278 3.9037e-08  
a 1.911340902769139 5.7143e-09 au
q 1.621812369963529 7.477e-08 au
i 26.49487241679821 6.8967e-06 deg
node 60.65902474799554 1.0637e-05 deg
peri 55.38732996686679 2.6475e-05 deg
M 221.0295647153394 2.3911e-05 deg
tp 2458973.085178546595
(2020-May-03.58517855)
6.4886e-05 TDB
period 965.1740962171358
2.64
4.3283e-06
1.185e-08
d
yr
n .3729897035270314 1.6727e-09 deg/d
Q 2.200869435574749 6.5799e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1253  
   data-arc span      18198 days (49.82 yr)  
   first obs. used      1970-01-04  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41946  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:32:58  

Additional Information
 Earth MOID = .704689 au 
 Jupiter MOID = 3.17242 au 
 T_jup = 3.795 
[ 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 13.1   n/a MPO448955  
diameter diameter 6.018 km 0.792 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 276. 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:
[Polakis, T. (2018) Minor Planet Bull. 45, 347-352.]
geometric albedo albedo 0.348   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
SMASSII spectral type spec_B A   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4142 Dersu-Uzala (1981 KE)          Discovered 1981-May-28 by Vavrova, Z. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 KE = 1970 AB = 1982 VB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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