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78401 (2002 QS8)
Classification: Main-belt Asteroid          SPK-ID: 2078401
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1681059905846465 4.0615e-08  
a 3.063078420046266 2.2018e-08 au
q 2.548156588005934 1.2335e-07 au
i 10.28996712746214 5.482e-06 deg
node 7.736877739420406 2.4241e-05 deg
peri 293.7534351454879 2.8987e-05 deg
M 131.8518725646885 1.7313e-05 deg
tp 2458283.334479546648
(2018-Jun-13.83447955)
9.1263e-05 TDB
period 1958.103304422468
5.36
2.1113e-05
5.78e-08
d
yr
n .1838513827063787 1.9823e-09 deg/d
Q 3.578000252086597 2.5719e-08 au
  Orbit Determination Parameters
   # obs. used (total)      882  
   data-arc span      8419 days (23.05 yr)  
   first obs. used      1997-10-10  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47961  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:01  

Additional Information
 Earth MOID = 1.55503 au 
 Jupiter MOID = 1.8205 au 
 T_jup = 3.187 
[ 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 14.4   n/a MPO502629  

78401 (2002 QS8)          Discovered 2002-Aug-19 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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