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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .151115938188302 8.7593e-08  
a 1.911576364832927 7.7181e-09 au
q 1.622706709042615 1.6724e-07 au
i 26.49239313752285 1.0472e-05 deg
node 60.66682571950984 1.8952e-05 deg
peri 55.32353593668649 5.1236e-05 deg
M 208.1990491439264 3.7419e-05 deg
tp 2458007.559501366572
(2017-Sep-11.05950137)
9.9986e-05 JED
period 965.3524544184539
2.64
5.8465e-06
1.601e-08
d
yr
n .3729207900723375 2.2585e-09 deg/d
Q 2.200446020623239 8.8844e-09 au
  Orbit Determination Parameters
   # obs. used (total)      578  
   data-arc span      16901 days (46.27 yr)  
   first obs. used      1970-01-04  
   last obs. used      2016-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54301  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:47:02  

Additional Information
 Earth MOID = .703876 au 
 Jupiter MOID = 3.17238 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. 2016-February); 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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