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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04917427095319118 3.6942e-08  
a 2.428387644164331 1.1246e-08 au
q 2.308973452170812 9.4932e-08 au
i 7.355398062466184 3.7763e-06 deg
node 257.8457036798487 3.4407e-05 deg
peri 327.8068945729065 6.3932e-05 deg
M 304.2089249780605 5.4449e-05 deg
tp 2459214.708982158848
(2020-Dec-31.20898216)
0.00020909 TDB
period 1382.21451274886
3.78
9.6017e-06
2.629e-08
d
yr
n .2604516134648703 1.8092e-09 deg/d
Q 2.547801836157849 1.1799e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1062  
   data-arc span      8027 days (21.98 yr)  
   first obs. used      1998-05-01  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52019  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 13:38:34  

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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