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117634 (2005 EJ128)
Classification: Main-belt Asteroid          SPK-ID: 2117634
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1729288893603768 3.8687e-08  
a 2.387478450108555 1.1313e-08 au
q 1.974614453359448 9.683e-08 au
i 3.630207249465101 4.5303e-06 deg
node 317.2138362114062 6.5802e-05 deg
peri 338.2544855298839 6.734e-05 deg
M 296.8385618462394 1.3796e-05 deg
tp 2459236.905255229187
(2021-Jan-22.40525523)
5.1652e-05 TDB
period 1347.434358212756
3.69
9.5774e-06
2.622e-08
d
yr
n .267174425088511 1.899e-09 deg/d
Q 2.800342446857661 1.327e-08 au
  Orbit Determination Parameters
   # obs. used (total)      575  
   data-arc span      10519 days (28.80 yr)  
   first obs. used      1991-07-10  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59276  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:13:36  

Additional Information
 Earth MOID = .959231 au 
 Jupiter MOID = 2.39905 au 
 T_jup = 3.511 
[ 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 MPO426742  
rotation period rot_per 9.350 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

117634 (2005 EJ128)          Discovered 2005-Mar-09 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2005 EJ128 = 1991 NT5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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