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17420 (1988 RL13)
Classification: Jupiter Trojan          SPK-ID: 2017420
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08353503137792415 6.9392e-08  
a 5.200454523022882 1.1953e-07 au
q 4.766034391262697 3.6877e-07 au
i 15.86002636791458 7.5889e-06 deg
node 59.30885121097969 2.1462e-05 deg
peri 258.4386885907707 6.5902e-05 deg
M 263.8155142063617 7.0374e-05 deg
tp 2460157.845182022014
(2023-Aug-01.34518202)
0.00087076 TDB
period 4331.720049133768
11.86
0.00014935
4.089e-07
d
yr
n .08310786383159519 2.8654e-09 deg/d
Q 5.634874654783066 1.2952e-07 au
  Orbit Determination Parameters
   # obs. used (total)      742  
   data-arc span      14765 days (40.42 yr)  
   first obs. used      1978-11-30  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5694  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:30:53  

Additional Information
 Earth MOID = 3.79804 au 
 Jupiter MOID = .203588 au 
 T_jup = 2.917 
[ 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 11.9   n/a MPO435861  
diameter diameter 18.361 km 0.980 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.100   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

17420 (1988 RL13)          Discovered 1988-Sep-14 by Bus, S. J. at Cerro Tololo
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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