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215750 (2004 EK85)
Classification: Main-belt Asteroid          SPK-ID: 2215750
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08984412236311784 8.5553e-08  
a 2.423585031540202 1.8413e-08 au
q 2.205840161409083 2.1012e-07 au
i 4.67135905129757 6.733e-06 deg
node 121.3812689072395 6.8871e-05 deg
peri 29.70584566349833 7.7163e-05 deg
M 129.8531057111169 3.1017e-05 deg
tp 2458503.409275346932
(2019-Jan-19.90927535)
0.00011884 TDB
period 1378.116140504325
3.77
1.5705e-05
4.3e-08
d
yr
n .2612261691298798 2.9769e-09 deg/d
Q 2.641329901671321 2.0067e-08 au
  Orbit Determination Parameters
   # obs. used (total)      335  
   data-arc span      9531 days (26.09 yr)  
   first obs. used      1993-04-24  
   last obs. used      2019-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52369  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:26:36  

Additional Information
 Earth MOID = 1.21829 au 
 Jupiter MOID = 2.34924 au 
 T_jup = 3.502 
[ 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 16.8   n/a MPO433412  
rotation period rot_per 5.49 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

215750 (2004 EK85)          Discovered 2004-Mar-15 by LINEAR at Socorro
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

Alternate Designations
 2004 EK85 = 2005 NA34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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