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78410 (2002 QU21)
Classification: Main-belt Asteroid          SPK-ID: 2078410
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05507194674505929 3.7293e-08  
a 2.254148304193058 9.5035e-09 au
q 2.130007968829072 8.4714e-08 au
i 2.681912524564627 4.936e-06 deg
node 349.6998990518229 9.265e-05 deg
peri 308.7768678861013 0.00010451 deg
M 117.4492105998113 4.7342e-05 deg
tp 2458597.207861119720
(2019-Apr-23.70786112)
0.00016264 TDB
period 1236.152795369524
3.38
7.8175e-06
2.14e-08
d
yr
n .2912261343003191 1.8417e-09 deg/d
Q 2.378288639557044 1.0027e-08 au
  Orbit Determination Parameters
   # obs. used (total)      404  
   data-arc span      10253 days (28.07 yr)  
   first obs. used      1992-09-23  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56885  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:26:57  

Additional Information
 Earth MOID = 1.11555 au 
 Jupiter MOID = 2.71249 au 
 T_jup = 3.621 
[ 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 16.9   n/a MPO449493  

78410 (2002 QU21)          Discovered 2002-Aug-26 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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