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70421 (1999 SY14)
Classification: Main-belt Asteroid          SPK-ID: 2070421
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04917427040004825 3.6939e-08  
a 2.428387643970529 1.1245e-08 au
q 2.308973453329786 9.4925e-08 au
i 7.35539803769432 3.7728e-06 deg
node 257.8457036484283 3.4407e-05 deg
peri 327.8068937154802 6.3926e-05 deg
M 304.20892599823 5.444e-05 deg
tp 2459214.708978216279
(2020-Dec-31.20897822)
0.00020906 TDB
period 1382.214512583395
3.78
9.6005e-06
2.628e-08
d
yr
n .2604516134960489 1.809e-09 deg/d
Q 2.547801834611272 1.1798e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1068  
   data-arc span      8053 days (22.05 yr)  
   first obs. used      1998-05-01  
   last obs. used      2020-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51977  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:00:44  

Additional Information
 Earth MOID = 1.30133 au 
 Jupiter MOID = 2.45614 au 
 T_jup = 3.496 
[ 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 15.3   n/a MPO459317  
diameter diameter 2.289 km 0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.233   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70421 (1999 SY14)          Discovered 1999-Sep-29 by CSS at Catalina
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 SY14 = 1998 KG25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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