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100009 (1988 RQ4)
Classification: Main-belt Asteroid          SPK-ID: 2100009
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2251300695407583 3.6836e-08  
a 2.257211105228973 8.6092e-09 au
q 1.749045012140603 8.5679e-08 au
i .7950124831586415 4.0637e-06 deg
node 192.1057741959783 0.00028207 deg
peri 161.7906654508436 0.00028223 deg
M 121.5127806730539 1.1513e-05 deg
tp 2458582.403865014501
(2019-Apr-08.90386501)
3.797e-05 TDB
period 1238.673066002489
3.39
7.0866e-06
1.94e-08
d
yr
n .2906335899930487 1.6628e-09 deg/d
Q 2.765377198317344 1.0547e-08 au
  Orbit Determination Parameters
   # obs. used (total)      567  
   data-arc span      11467 days (31.39 yr)  
   first obs. used      1988-09-01  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52442  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 00:59:29  

Additional Information
 Earth MOID = .74406 au 
 Jupiter MOID = 2.67546 au 
 T_jup = 3.589 
[ 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 16.5   n/a MPO449608  

100009 (1988 RQ4)          Discovered 1988-Sep-01 by Debehogne, H. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1988 RQ4 = 1998 MU42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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