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17027 (1999 EF12)
Classification: Main-belt Asteroid          SPK-ID: 2017027
[ 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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08877913151401196 2.3579e-08  
a 2.648034168521141 1.0468e-08 au
q 2.412943994820406 6.1688e-08 au
i 8.276930109028916 5.0243e-07 deg
node 135.2720894320295 5.5022e-06 deg
peri 212.5392936899137 1.2821e-05 deg
M 213.5665547887548 1.4311e-05 deg
tp 2459840.708717441781
(2022-Sep-18.20871744)		 6.4572e-05 TDB
period 1573.92416702726
4.31		 9.3329e-06
2.555e-08		 d
yr
n .2287276652470162 1.3563e-09 deg/d
Q 2.883124342221877 1.1397e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2496  
   data-arc span      15148 days (41.47 yr)  
   first obs. used      1979-09-24  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46815  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:51:35  

Additional Information
 Earth MOID = 1.40767 au 
 Jupiter MOID = 2.47802 au 
 T_jup = 3.371 
[ 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 13.4   n/a MPO502299  
diameter diameter 9.845 km 2.886 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.067   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

17027 (1999 EF12)          Discovered 1999-Mar-15 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 EF12 = 1979 SB4 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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