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JPL Small-Body Database Browser
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347500 (1998 SQ40)
Classification: Main-belt Asteroid          SPK-ID: 2347500
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02715569407160465 6.1684e-08  
a 2.696817024420771 2.3257e-08 au
q 2.623583086338506 1.6992e-07 au
i 1.980176214635898 8.9915e-06 deg
node 22.00124341127091 0.00014597 deg
peri 241.4442087248518 0.00020634 deg
M 57.70729611252101 0.00014492 deg
tp 2458741.199189876198
(2019-Sep-14.69918988)
0.00065133 TDB
period 1617.616799486719
4.43
2.0925e-05
5.729e-08
d
yr
n .2225496175078241 2.8788e-09 deg/d
Q 2.770050962503037 2.3888e-08 au
  Orbit Determination Parameters
   # obs. used (total)      160  
   data-arc span      7569 days (20.72 yr)  
   first obs. used      1998-09-19  
   last obs. used      2019-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60085  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 23:27:36  

Additional Information
 Earth MOID = 1.6086 au 
 Jupiter MOID = 2.22747 au 
 T_jup = 3.368 
[ 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 17.4   n/a MPO434189  

347500 (1998 SQ40)          Discovered 1998-Sep-24 by Spacewatch at Kitt Peak
Reference: 20121228/Numbers.arcLast Updated: 2013-01-02

[ show close-approach data ]
Alternate Designations
 1998 SQ40 = 2005 EP311 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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