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78403 (2002 QJ9)
Classification: Main-belt Asteroid          SPK-ID: 2078403
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07533378756071267 4.5055e-08  
a 2.982417335765521 2.4215e-08 au
q 2.757740541775575 1.2863e-07 au
i 10.93318474905251 4.6223e-06 deg
node 108.97154442 2.6933e-05 deg
peri 206.0904848767837 4.6126e-05 deg
M 179.6065116387439 4.0384e-05 deg
tp 2458061.921445775479
(2017-Nov-04.42144578)
0.00020798 TDB
period 1881.269651294424
5.15
2.2911e-05
6.273e-08
d
yr
n .1913601273226828 2.3305e-09 deg/d
Q 3.207094129755468 2.6039e-08 au
  Orbit Determination Parameters
   # obs. used (total)      767  
   data-arc span      7379 days (20.20 yr)  
   first obs. used      2000-03-04  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56009  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:00  

Additional Information
 Earth MOID = 1.74756 au 
 Jupiter MOID = 2.01929 au 
 T_jup = 3.227 
[ 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 14.8   n/a MPO337846  
diameter diameter 4.127 km 0.449 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.150   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78403 (2002 QJ9)          Discovered 2002-Aug-19 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 QJ9 = 2000 EG182 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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