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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2405309295449789 3.1873e-08  
a 3.077337145761026 1.8883e-08 au
q 2.337142381567834 9.6152e-08 au
i 2.506393186478868 3.5304e-06 deg
node 176.3014471702721 9.3547e-05 deg
peri 139.5554506756245 9.3912e-05 deg
M 61.46723183332563 8.1879e-06 deg
tp 2458863.831720198961
(2020-Jan-15.33172020)
4.3674e-05 TDB
period 1971.791751693343
5.40
1.8149e-05
4.969e-08
d
yr
n .1825750613323327 1.6805e-09 deg/d
Q 3.817531909954218 2.3425e-08 au
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      8182 days (22.40 yr)  
   first obs. used      1998-08-17  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52747  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:39  

Additional Information
 Earth MOID = 1.32233 au 
 Jupiter MOID = 1.50824 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 15.35   n/a E2021B55  

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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