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90551 (2004 FR121)
Classification: Outer Main-belt Asteroid          SPK-ID: 2090551
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .005733310976866733 6.0055e-08  
a 3.211479375104019 3.2477e-08 au
q 3.193066965150754 1.9662e-07 au
i 32.23960827257511 6.6754e-06 deg
node 188.8057107398608 9.6116e-06 deg
peri 210.8326086970737 0.00044062 deg
M 96.98038713293964 0.00044093 deg
tp 2458434.211756681304
(2018-Nov-11.71175668)
0.002573 TDB
period 2102.113361491084
5.76
3.1887e-05
8.73e-08
d
yr
n .1712562255656101 2.5978e-09 deg/d
Q 3.229891785057284 3.2663e-08 au
  Orbit Determination Parameters
   # obs. used (total)      564  
   data-arc span      21674 days (59.34 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64156  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:13:45  

Additional Information
 Earth MOID = 2.19524 au 
 Jupiter MOID = 1.75959 au 
 T_jup = 2.949 
[ 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 14.4   n/a MPO459423  
diameter diameter 3.719 km 0.439 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.267   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90551 (2004 FR121)          Discovered 2004-Mar-23 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 2004 FR121 = 1998 FT138 = 2000 SR5 = 2851 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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