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JPL Small-Body Database Browser
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146042 (2000 ET4)
Classification: Main-belt Asteroid          SPK-ID: 2146042
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2006542796408237 4.747e-08  
a 2.434339098182045 1.1817e-08 au
q 1.945878540034834 1.1475e-07 au
i .8708736657673319 5.2564e-06 deg
node 1.187747344617183 0.00028735 deg
peri 334.0003443903331 0.0002876 deg
M 188.842283550305 1.42e-05 deg
tp 2459260.074749621579
(2021-Feb-14.57474962)
5.6661e-05 TDB
period 1387.298888937657
3.80
1.0102e-05
2.766e-08
d
yr
n .2594970722391876 1.8895e-09 deg/d
Q 2.922799656329255 1.4188e-08 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      8950 days (24.50 yr)  
   first obs. used      1994-09-28  
   last obs. used      2019-03-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54296  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:56:47  

Additional Information
 Earth MOID = .935225 au 
 Jupiter MOID = 2.44928 au 
 T_jup = 3.477 
[ 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 16.2   n/a MPO436733  
rotation period rot_per 8.66 h n/a LCDB (Rev. 2019-January); 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. (2018) Minor Planet Bull. 45, 190-195.]

146042 (2000 ET4)          Discovered 2000-Mar-02 by Spacewatch at Kitt Peak
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

Alternate Designations
 2000 ET4 = 1994 TA6 = 1998 VA23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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