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17384 (1981 EM12)
Classification: Outer Main-belt Asteroid          SPK-ID: 2017384
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07495874085511849 3.716e-08  
a 3.201483232307256 2.8885e-08 au
q 2.96150408034473 1.2553e-07 au
i 15.67183795613453 5.6919e-06 deg
node 339.6355582160608 1.49e-05 deg
peri 294.0562411849521 4.0964e-05 deg
M 259.6121609123093 3.9234e-05 deg
tp 2459783.950315883605
(2022-Jul-23.45031588)
0.00022895 TDB
period 2092.306355300884
5.73
2.8316e-05
7.752e-08
d
yr
n .1720589334768953 2.3285e-09 deg/d
Q 3.441462384269783 3.105e-08 au
  Orbit Determination Parameters
   # obs. used (total)      565  
   data-arc span      15902 days (43.54 yr)  
   first obs. used      1977-09-08  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55376  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:32:41  

Additional Information
 Earth MOID = 1.9845 au 
 Jupiter MOID = 1.84993 au 
 T_jup = 3.132 
[ 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 14.74   n/a MPCxxxxx  
diameter diameter 6.399 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17384 (1981 EM12)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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