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4142 Dersu-Uzala (1981 KE)
Classification: Mars-crossing Asteroid          SPK-ID: 2004142
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1512484642702419 8.8667e-08  
a 1.911538708579727 7.8146e-09 AU
q 1.622421414513922 1.6935e-07 AU
i 26.49360385234026 1.0535e-05 deg
node 60.68037961962714 1.9239e-05 deg
peri 55.36633676451718 5.3508e-05 deg
M 344.3766578899172 3.9114e-05 deg
tp 2457042.393294449066
(2015-Jan-19.89329445)
0.00010482 JED
period 965.3239297583125
2.64
5.9195e-06
1.621e-08
d
yr
n .372931809625949 2.2869e-09 deg/d
Q 2.200656002645532 8.9965e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      564  
   data-arc span      16550 days (45.31 yr)  
   first obs. used      1970-01-04  
   last obs. used      2015-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54568  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:46:35  

Additional Information
 Earth MOID = .704959 AU 
 T_jup = 3.795 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a MPO319136  
rotation period rot_per 140. h n/a LCDB (Rev. 2015-May); 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:
[Warner, B.D.; Stephens, R.D.; Harris, A.W.; Pravec, P. (2009) Minor Planet Bul. 36, 176-178.]
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 | Physical Parameters | Discovery Circumstances ]
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