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90708 (1990 EU)
Classification: Main-belt Asteroid          SPK-ID: 2090708
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04935957405637809 6.4521e-08  
a 2.52494937713345 1.4297e-08 au
q 2.400318951364226 1.625e-07 au
i 6.537034722039367 3.96e-06 deg
node 275.524030111432 5.9068e-05 deg
peri 211.0603851777279 0.00011626 deg
M 229.6387588856575 9.9641e-05 deg
tp 2459531.168642473026
(2021-Nov-12.66864247)
0.00040601 TDB
period 1465.471712736483
4.01
1.2447e-05
3.408e-08
d
yr
n .2456546904803574 2.0865e-09 deg/d
Q 2.649579802902675 1.5003e-08 au
  Orbit Determination Parameters
   # obs. used (total)      745  
   data-arc span      11115 days (30.43 yr)  
   first obs. used      1990-02-24  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55858  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:14:00  

Additional Information
 Earth MOID = 1.41852 au 
 Jupiter MOID = 2.40475 au 
 T_jup = 3.443 
[ 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 15.0   n/a MPO474785  
diameter diameter 4.500 km 0.212 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.126   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90708 (1990 EU)          Discovered 1990-Mar-02 by Elst, E. W. at La Silla
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1990 EU = 2000 SC176 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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