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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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .151248471042717 9.085e-08  
a 1.911538709087037 8.6594e-09 AU
q 1.622421401998654 1.7398e-07 AU
i 26.49360799123917 1.3226e-05 deg
node 60.68037527840678 1.9938e-05 deg
peri 55.36634263433778 5.5996e-05 deg
M 344.3766553287601 4.3492e-05 deg
tp 2457042.393301333371
(2015-Jan-19.89330133)
0.00011662 JED
period 965.3239301425987
2.64
6.5595e-06
1.796e-08
d
yr
n .3729318094774885 2.5341e-09 deg/d
Q 2.20065601617542 9.9691e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      503  
   data-arc span      16431 days (44.99 yr)  
   first obs. used      1970-01-04  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56398  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:05:49  

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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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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