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JPL Small-Body Database Browser
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117385 (2004 YN20)
Classification: Jupiter Trojan          SPK-ID: 2117385
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04231919774556785 7.6057e-08  
a 5.291268107404426 1.4628e-07 au
q 5.067345886042362 4.2319e-07 au
i 13.29121073483059 6.5538e-06 deg
node 125.3726153909268 3.1724e-05 deg
peri 215.9758792979337 9.0205e-05 deg
M 201.3575733235675 8.7452e-05 deg
tp 2460559.592410115648
(2024-Sep-06.09241012)
0.0011127 TDB
period 4445.678765870814
12.17
0.00018436
5.048e-07
d
yr
n .08097751073777452 3.358e-09 deg/d
Q 5.515190328766491 1.5247e-07 au
  Orbit Determination Parameters
   # obs. used (total)      562  
   data-arc span      6822 days (18.68 yr)  
   first obs. used      2000-08-29  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54681  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:54:45  

Additional Information
 Earth MOID = 4.0654 au 
 Jupiter MOID = .00921707 au 
 T_jup = 2.944 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456667.5 (2014-Jan-10.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0424057915844237 7.6527e-08  
q 5.078205538695942 4.2591e-07 au
tp 2456145.008950577777
(2012-Aug-05.50895058)
0.0010337 TDB
node 125.3692039758164 3.1729e-05 deg
peri 218.7042317061892 8.9112e-05 deg
i 13.28337039358292 6.5495e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      562  
   data-arc span      6822 days (18.68 yr)  
   first obs. used      2000-08-29  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54681  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:54:45  

Additional Information
 Jupiter MOID = .00921707 au 
 T_jup = 2.944 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.856398283508514E-15 -3.072377311756416E-14 1.648878085826577E-11 -1.336326374607221E-14 1.087536668760375E-12 -3.506578608274881E-15
q -3.072377311756416E-14 1.813986598006813E-13 -4.613217729867916E-11 7.869266609590141E-14 -2.200609209287412E-12 2.554774435683338E-14
tp 1.648878085826577E-11 -4.613217729867916E-11 1.068536029622634E-6 -1.40034740219371E-10 8.618133718553149E-8 -7.058057833849624E-11
node -1.336326374607221E-14 7.869266609590141E-14 -1.40034740219371E-10 1.006697964948107E-9 -9.901015820332233E-10 1.905259064415402E-11
peri 1.087536668760375E-12 -2.200609209287412E-12 8.618133718553149E-8 -9.901015820332233E-10 7.940918676513462E-9 -2.402312662283709E-11
i -3.506578608274881E-15 2.554774435683338E-14 -7.058057833849624E-11 1.905259064415402E-11 -2.402312662283709E-11 4.289581337961023E-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 12.0   n/a MPO320347  
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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