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79684 (1998 SJ55)
Classification: Main-belt Asteroid          SPK-ID: 2079684
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1356146170764654 3.7969e-08  
a 2.406313761615705 1.2886e-08 au
q 2.079982442268362 9.089e-08 au
i 6.680432637220705 5.2139e-06 deg
node 174.796762993811 3.906e-05 deg
peri 156.756441249128 4.3919e-05 deg
M 313.8098512047817 2.197e-05 deg
tp 2459175.433775564316
(2020-Nov-21.93377556)
8.3785e-05 TDB
period 1363.411048584307
3.73
1.0952e-05
2.998e-08
d
yr
n .2640436282028114 2.121e-09 deg/d
Q 2.732645080963048 1.4634e-08 au
  Orbit Determination Parameters
   # obs. used (total)      627  
   data-arc span      7931 days (21.71 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:03:09  

Additional Information
 Earth MOID = 1.0717 au 
 Jupiter MOID = 2.62404 au 
 T_jup = 3.501 
[ 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 15.9   n/a MPO432346  

79684 (1998 SJ55)          Discovered 1998-Sep-16 by LONEOS at Anderson Mesa
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1998 SJ55 = 2001 JY4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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