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100985 (1998 QW30)
Classification: Main-belt Asteroid          SPK-ID: 2100985
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2405938289119093 3.4931e-08  
a 3.077181701931353 2.0486e-08 au
q 2.336830774006024 1.0667e-07 au
i 2.506479117486267 3.7629e-06 deg
node 176.3023358676889 9.8889e-05 deg
peri 139.523978379528 9.9234e-05 deg
M 24.96845187877481 8.2355e-06 deg
tp 2458863.753174370764
(2020-Jan-15.25317437)
4.455e-05 TDB
period 1971.642353540283
5.40
1.9689e-05
5.391e-08
d
yr
n .1825888956755183 1.8234e-09 deg/d
Q 3.817532629856684 2.5415e-08 au
  Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      8104 days (22.19 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53384  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:03:05  

Additional Information
 Earth MOID = 1.32399 au 
 Jupiter MOID = 1.50818 au 
 T_jup = 3.182 
[ 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 15.2   n/a MPO436470  

100985 (1998 QW30)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 QW30 = 2003 NT5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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