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78867 (2003 QE81)
Classification: Outer Main-belt Asteroid          SPK-ID: 2078867
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0562452666305067 5.3631e-08  
a 3.897054339926207 4.9523e-08 au
q 3.677863479503484 2.348e-07 au
i 2.615375036818645 4.7021e-06 deg
node 125.9751659381511 0.00011574 deg
peri 263.8999051665663 0.00012302 deg
M 17.70079997968081 4.1033e-05 deg
tp 2458862.336440627522
(2020-Jan-13.83644063)
0.00032028 TDB
period 2809.979290833677
7.69
5.3563e-05
1.466e-07
d
yr
n .128114823185474 2.4421e-09 deg/d
Q 4.11624520034893 5.2308e-08 au
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      10006 days (27.39 yr)  
   first obs. used      1993-05-24  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54044  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:13  

Additional Information
 Earth MOID = 2.68422 au 
 Jupiter MOID = 1.23522 au 
 T_jup = 3.062 
[ 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 13.8   n/a MPO449496  
diameter diameter 7.657 km 0.917 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.083   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

78867 (2003 QE81)          Discovered 2003-Aug-23 by Buie, M. W. at Cerro Tololo
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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