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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .151503747005099 3.429e-08  
a 1.911544161540921 5.4936e-09 au
q 1.621938058501751 6.6424e-08 au
i 26.49358949161828 6.7648e-06 deg
node 60.65907004560827 9.5109e-06 deg
peri 55.32330167104573 2.6024e-05 deg
M 10.27566848794645 2.3879e-05 deg
tp 2458972.946135748796
(2020-May-03.44613575)
6.3974e-05 TDB
period 965.3280603660207
2.64
4.1614e-06
1.139e-08
d
yr
n .3729302138627357 1.6077e-09 deg/d
Q 2.20115026458009 6.3259e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1467  
   data-arc span      18294 days (50.09 yr)  
   first obs. used      1970-01-04  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .391  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:05:20  

Additional Information
 Earth MOID = .704791 au 
 Jupiter MOID = 3.17148 au 
 T_jup = 3.794 
[ 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-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:
[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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