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163818 (2003 RX7)
Classification: Apollo [NEO, PHA]          SPK-ID: 2163818
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 143 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3544892171277539 3.2546e-08  
a 1.229103376268013 2.0597e-09 au
q .7933994826456859 3.9696e-08 au
i 10.3893872149374 3.9628e-06 deg
node 241.0527108952907 1.7405e-05 deg
peri 245.8396921355317 1.8407e-05 deg
M 136.1651158540502 1.094e-05 deg
tp 2459012.245917346295
(2020-Jun-11.74591735)
1.5038e-05 TDB
period 497.715360724072
1.36
1.2511e-06
3.425e-09
d
yr
n .723304981940431 1.8182e-09 deg/d
Q 1.66480726989034 2.7899e-09 au
  Orbit Determination Parameters
   # obs. used (total)      667  
   data-arc span      5831 days (15.96 yr)  
   first obs. used      2003-09-06  
   last obs. used      2019-08-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48762  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:16:16  

Additional Information
 Earth MOID = .0269005 au 
 Jupiter MOID = 3.44359 au 
 T_jup = 5.127 
[ 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 18.4   n/a MPO493930  
diameter diameter 0.386 km 0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 5.649 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2015) Minor Planet Bull. 42, 115-127.]
geometric albedo albedo 0.516   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

163818 (2003 RX7)          Discovered 2003-Sep-06 by LONEOS at Anderson Mesa
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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