Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1512484639640608 8.9254e-08  
a 1.911538708811291 7.8792e-09 AU
q 1.622421415295739 1.7057e-07 AU
i 26.49360359671316 1.1145e-05 deg
node 60.68037874016894 1.9284e-05 deg
peri 55.36633834389658 5.3708e-05 deg
M 344.3766569094859 3.9467e-05 deg
tp 2457042.393297085661
(2015-Jan-19.89329709)
0.00010577 JED
period 965.3239299337223
2.64
5.9685e-06
1.634e-08
d
yr
n .3729318095581833 2.3058e-09 deg/d
Q 2.200656002326843 9.0709e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      522  
   data-arc span      16467 days (45.08 yr)  
   first obs. used      1970-01-04  
   last obs. used      2015-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55899  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:51:53  

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-Feb); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Mar-30 07:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin