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469474 (2002 RW238)
Classification: Inner Main-belt Asteroid          SPK-ID: 2469474
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1344098040246052 9.4928e-08  
a 1.993365217383107 7.9572e-09 au
q 1.725437389165179 1.885e-07 au
i 17.32058309262193 9.453e-06 deg
node 336.9859119854781 1.4502e-05 deg
peri 322.2014314675902 2.5487e-05 deg
M 141.8127401957876 2.1631e-05 deg
tp 2458595.559244516653
(2019-Apr-22.05924452)
6.1206e-05 TDB
period 1027.965976630464
2.81
6.1552e-06
1.685e-08
d
yr
n .350206143183875 2.097e-09 deg/d
Q 2.261293045601035 9.0267e-09 au
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      6284 days (17.20 yr)  
   first obs. used      2002-08-19  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50679  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 03:25:40  

Additional Information
 Earth MOID = .734671 au 
 Jupiter MOID = 3.06031 au 
 T_jup = 3.781 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457405.5 (2016-Jan-18.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1343688372424748 9.4879e-08  
q 1.725332978463133 1.8835e-07 au
tp 2457567.980553086267
(2016-Jun-28.48055309)
6.0222e-05 TDB
node 337.0180288013333 1.4501e-05 deg
peri 322.2542554151431 2.5488e-05 deg
i 17.32235670451708 9.4533e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      6284 days (17.20 yr)  
   first obs. used      2002-08-19  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50679  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 03:25:40  

Additional Information
 Jupiter MOID = 3.06031 au 
 T_jup = 3.781 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.002110113276459E-15 -1.78589186852402E-14 3.090629382042515E-12 2.06920215434174E-14 7.683454133746982E-13 -8.399626886367184E-14
q -1.78589186852402E-14 3.547637780449187E-14 -6.113117791675413E-12 -4.093706126471097E-14 -1.520713175563481E-12 1.670322046486956E-13
tp 3.090629382042515E-12 -6.113117791675413E-12 3.62665381669915E-9 2.502462511595918E-11 1.250404441827558E-9 -5.538461341427071E-11
node 2.06920215434174E-14 -4.093706126471097E-14 2.502462511595918E-11 2.102911708882012E-10 -1.90958693423965E-10 -3.250970054129216E-11
peri 7.683454133746982E-13 -1.520713175563481E-12 1.250404441827558E-9 -1.90958693423965E-10 6.496554107328639E-10 1.268175883699341E-11
i -8.399626886367184E-14 1.670322046486956E-13 -5.538461341427071E-11 -3.250970054129216E-11 1.268175883699341E-11 8.936400508683054E-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 17.9   n/a MPO437769  

469474 (2002 RW238)          Discovered 2002-Sep-01 by Matson, R. at Haleakala
Reference: Last Updated: 2016-08-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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