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46747 (1998 DF9)
Classification: Main-belt Asteroid          SPK-ID: 2046747
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06336560701641047 4.1205e-08  
a 2.18333143040099 8.2505e-09 au
q 2.044983308995624 9.2973e-08 au
i 5.001283116267056 4.4441e-06 deg
node 69.60327645796414 4.967e-05 deg
peri 109.2728540061406 6.5022e-05 deg
M 313.7216273827126 4.4402e-05 deg
tp 2459151.979375075053
(2020-Oct-29.47937508)
0.00014575 TDB
period 1178.35982431777
3.23
6.6793e-06
1.829e-08
d
yr
n .3055093975292543 1.7317e-09 deg/d
Q 2.321679551806357 8.7733e-09 au
  Orbit Determination Parameters
   # obs. used (total)      847  
   data-arc span      9069 days (24.83 yr)  
   first obs. used      1995-03-31  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56568  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:34:13  

Additional Information
 Earth MOID = 1.05359 au 
 Jupiter MOID = 2.6421 au 
 T_jup = 3.671 
[ 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 15.9   n/a MPO452809  
diameter diameter 2.077 km 0.478 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.163   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46747 (1998 DF9)          Discovered 1998-Feb-22 by NEAT at Haleakala
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 DF9 = 1995 JM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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