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100025 (1990 SY6)
Classification: Main-belt Asteroid          SPK-ID: 2100025
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1545307210982224 5.479e-08  
a 2.430565085028845 1.2648e-08 au
q 2.054968109763176 1.3605e-07 au
i 6.87062345222073 6.2298e-06 deg
node 24.53004365895173 3.7414e-05 deg
peri 349.8426227257917 4.0324e-05 deg
M 344.9023316863881 1.7353e-05 deg
tp 2459258.545250335673
(2021-Feb-13.04525034)
6.6973e-05 TDB
period 1384.073996512584
3.79
1.0803e-05
2.958e-08
d
yr
n .2601017004199797 2.0302e-09 deg/d
Q 2.806162060294514 1.4602e-08 au
  Orbit Determination Parameters
   # obs. used (total)      536  
   data-arc span      11067 days (30.30 yr)  
   first obs. used      1990-09-15  
   last obs. used      2021-01-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59187  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:13  

Additional Information
 Earth MOID = 1.05503 au 
 Jupiter MOID = 2.65781 au 
 T_jup = 3.482 
[ 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 15.97   n/a MPCxxxxx  
diameter diameter 1.792 km 0.455 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.263   0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100025 (1990 SY6)          Discovered 1990-Sep-22 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1990 SY6 = 2004 HC30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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