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90899 (1997 EL1)
Classification: Main-belt Asteroid          SPK-ID: 2090899
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1820120557889559 3.0257e-08  
a 2.739388767207281 1.2061e-08 au
q 2.240786986082711 8.3355e-08 au
i 2.800052657842822 4.1775e-06 deg
node 299.1473068907717 8.8433e-05 deg
peri 143.3176680559139 8.9762e-05 deg
M 184.5720943604993 1.4267e-05 deg
tp 2460203.502928228896
(2023-Sep-16.00292823)
6.7263e-05 TDB
period 1656.070926135405
4.53
1.0937e-05
2.994e-08
d
yr
n .2173819939222611 1.4356e-09 deg/d
Q 3.237990548331852 1.4256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      842  
   data-arc span      8501 days (23.27 yr)  
   first obs. used      1997-03-03  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52809  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:16:50  

Additional Information
 Earth MOID = 1.25747 au 
 Jupiter MOID = 1.99995 au 
 T_jup = 3.325 
[ 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 15.71   n/a E2021B10  
diameter diameter 1.776 km 0.285 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.322   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90899 (1997 EL1)          Discovered 1997-Mar-03 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1997 EL1 = 2000 WD83 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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