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118294 (1998 SQ75)
Classification: Main-belt Asteroid          SPK-ID: 2118294
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1470483490896788 3.3821e-08  
a 2.289815027309661 9.9194e-09 au
q 1.953101507823037 7.6389e-08 au
i 6.276513776230042 4.1237e-06 deg
node 188.491872031449 3.3867e-05 deg
peri 129.1840091000283 3.6638e-05 deg
M 133.1427128218566 1.386e-05 deg
tp 2458532.426634477285
(2019-Feb-17.92663448)
4.8048e-05 TDB
period 1265.607467482181
3.47
8.2238e-06
2.252e-08
d
yr
n .2844483848662726 1.8483e-09 deg/d
Q 2.626528546796284 1.1378e-08 au
  Orbit Determination Parameters
   # obs. used (total)      616  
   data-arc span      7802 days (21.36 yr)  
   first obs. used      1998-09-17  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5151  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:12:33  

Additional Information
 Earth MOID = .947487 au 
 Jupiter MOID = 2.67104 au 
 T_jup = 3.577 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457278.5 (2015-Sep-13.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1478084158570222 3.3789e-08  
q 1.951114935880277 7.6361e-08 au
tp 2457267.549842226694
(2015-Sep-02.04984223)
4.6856e-05 TDB
node 188.5164498356335 3.3843e-05 deg
peri 129.2824215983181 3.6588e-05 deg
i 6.27869744679068 4.1257e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      616  
   data-arc span      7802 days (21.36 yr)  
   first obs. used      1998-09-17  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5151  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:12:33  

Additional Information
 Jupiter MOID = 2.67104 au 
 T_jup = 3.577 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.141698526597886E-15 -2.564811051681633E-15 -2.266627433115727E-14 -1.348907965691298E-14 -7.523447260674574E-15 -4.064627106275598E-15
q -2.564811051681633E-15 5.830972435996419E-15 5.940725350298547E-14 3.08474529618096E-14 1.796102895585843E-14 9.378618712676696E-15
tp -2.266627433115727E-14 5.940725350298547E-14 2.195477386461809E-9 1.459743378072969E-11 6.624589128437577E-10 3.797482550374308E-13
node -1.348907965691298E-14 3.08474529618096E-14 1.459743378072969E-11 1.145380793199958E-9 -1.133542148023725E-9 7.097641510045184E-12
peri -7.523447260674574E-15 1.796102895585843E-14 6.624589128437577E-10 -1.133542148023725E-9 1.338687076975338E-9 -6.847304715581873E-12
i -4.064627106275598E-15 9.378618712676696E-15 3.797482550374308E-13 7.097641510045184E-12 -6.847304715581873E-12 1.702179111381856E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO502793  

118294 (1998 SQ75)          Discovered 1998-Sep-17 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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