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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731336826880753 3.7961e-08  
a 2.388109754029126 1.1278e-08 au
q 1.97464751765075 9.536e-08 au
i 3.630253460556932 4.4054e-06 deg
node 317.2118080179985 6.5785e-05 deg
peri 338.2127107135347 6.732e-05 deg
M 350.3110629412095 1.3747e-05 deg
tp 2459236.778847702315
(2021-Jan-22.27884770)
5.1476e-05 TDB
period 1347.968832245021
3.69
9.5488e-06
2.614e-08
d
yr
n .2670684895587873 1.8919e-09 deg/d
Q 2.801571990407502 1.3231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      10544 days (28.87 yr)  
   first obs. used      1991-07-10  
   last obs. used      2020-05-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59017  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:53:34  

Additional Information
 Earth MOID = .95729 au 
 Jupiter MOID = 2.39707 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 16.28   n/a E2021B55  
rotation period rot_per 9.350 h n/a LCDB (Rev. 2020-October); 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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