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213631 (2002 QQ78)
Classification: Main-belt Asteroid          SPK-ID: 2213631
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2309338192286668 4.3098e-08  
a 2.392669659170521 1.1636e-08 au
q 1.84012131662572 1.0837e-07 au
i 5.235119997655624 5.8253e-06 deg
node 358.9572856530409 4.2915e-05 deg
peri 287.9614367985384 4.555e-05 deg
M 7.996893737353386 1.3451e-05 deg
tp 2459170.470965774044
(2020-Nov-16.97096577)
5.0424e-05 TDB
period 1351.831433103646
3.70
9.861e-06
2.7e-08
d
yr
n .2663053922140887 1.9426e-09 deg/d
Q 2.945218001715322 1.4323e-08 au
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      6512 days (17.83 yr)  
   first obs. used      2002-07-24  
   last obs. used      2020-05-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:43:28  

Additional Information
 Earth MOID = .830335 au 
 Jupiter MOID = 2.25898 au 
 T_jup = 3.489 
[ 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 17.28   n/a E2021B55  

213631 (2002 QQ78)          Discovered 2002-Aug-29 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 2002 QQ78 = 2005 ED18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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