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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 ]

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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.


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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 
[ 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 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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