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78397 (2002 QE2)
Classification: Main-belt Asteroid          SPK-ID: 2078397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0189522869918038 3.7274e-08  
a 2.799162242455846 1.9731e-08 au
q 2.746111716300201 1.042e-07 au
i 3.539347516340835 5.0549e-06 deg
node 224.5797759770682 6.6388e-05 deg
peri 243.6115655761623 0.00014854 deg
M 149.1587660207575 0.00013288 deg
tp 2458291.760210956785
(2018-Jun-22.26021096)
0.00063113 TDB
period 1710.568750750125
4.68
1.8086e-05
4.952e-08
d
yr
n .210456317433679 2.2252e-09 deg/d
Q 2.85221276861149 2.0105e-08 au
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      9764 days (26.73 yr)  
   first obs. used      1993-09-23  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58135  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:01  

Additional Information
 Earth MOID = 1.76522 au 
 Jupiter MOID = 2.15885 au 
 T_jup = 3.323 
[ 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 15.3   n/a MPO337846  
diameter diameter 6.360 km 0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78397 (2002 QE2)          Discovered 2002-Aug-16 by NEAT at Palomar
Reference: 20040415/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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