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117385 (2004 YN20)
Classification: Jupiter Trojan          SPK-ID: 2117385
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04328707791713333 6.0832e-08  
a 5.286919662727581 1.3101e-07 au
q 5.058064359345468 3.7906e-07 au
i 13.29190857861984 4.9811e-06 deg
node 125.3816350314804 3.1035e-05 deg
peri 216.2418258104564 8.6702e-05 deg
M 249.7618129852908 8.5047e-05 deg
tp 2460560.165428152696
(2024-Sep-06.66542815)
0.001072 TDB
period 4440.199602245442
12.16
0.00016504
4.519e-07
d
yr
n .08107743620758519 3.0136e-09 deg/d
Q 5.515774966109694 1.3668e-07 au
  Orbit Determination Parameters
   # obs. used (total)      679  
   data-arc span      7469 days (20.45 yr)  
   first obs. used      2000-08-29  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5236  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:52:27  

Additional Information
 Earth MOID = 4.05536 au 
 Jupiter MOID = .0026641 au 
 T_jup = 2.944 
[ 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 11.99   n/a E2021B55  
diameter diameter 21.969 km 1.133 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.076   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

117385 (2004 YN20)          Discovered 2004-Dec-18 by Mt. Lemmon Survey at Mt. Lemmon
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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