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90904 (1997 EQ11)
Classification: Main-belt Asteroid          SPK-ID: 2090904
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731809991107497 6.0928e-08  
a 3.122372988432199 2.1909e-08 au
q 2.581637314699093 1.8548e-07 au
i 25.20726347048488 6.2743e-06 deg
node 179.9650722241043 9.6629e-06 deg
peri 36.24743228104 1.8856e-05 deg
M 67.07817381003125 1.3264e-05 deg
tp 2458625.004852993814
(2019-May-21.50485299)
7.5175e-05 TDB
period 2015.234542685351
5.52
2.1211e-05
5.807e-08
d
yr
n .1786392563122161 1.8802e-09 deg/d
Q 3.663108662165304 2.5703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1012  
   data-arc span      21860 days (59.85 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52999  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:14:40  

Additional Information
 Earth MOID = 1.61206 au 
 Jupiter MOID = 1.38596 au 
 T_jup = 3.047 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO359378  
diameter diameter 9.804 km 0.419 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90904 (1997 EQ11)          Discovered 1997-Mar-04 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1997 EQ11 = 1980 FD7 = 2002 CE21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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