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100955 (1998 QJ9)
Classification: Main-belt Asteroid          SPK-ID: 2100955
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2275558443848174 4.92e-08  
a 2.300994342005132 8.6158e-09 au
q 1.777389631585466 1.1403e-07 au
i 5.094922530263373 4.2076e-06 deg
node 257.609523646742 6.5202e-05 deg
peri 121.1000612237655 6.6476e-05 deg
M 48.22490588715539 1.1974e-05 deg
tp 2458829.718571838291
(2019-Dec-12.21857184)
4.2375e-05 TDB
period 1274.887177220817
3.49
7.1605e-06
1.96e-08
d
yr
n .2823779283628688 1.586e-09 deg/d
Q 2.824599052424797 1.0576e-08 au
  Orbit Determination Parameters
   # obs. used (total)      655  
   data-arc span      7772 days (21.28 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56603  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:36:26  

Additional Information
 Earth MOID = .786395 au 
 Jupiter MOID = 2.66153 au 
 T_jup = 3.551 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO502724  

100955 (1998 QJ9)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 QJ9 = 2002 VV56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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