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18037 (1999 NA38)
Classification: Jupiter Trojan          SPK-ID: 2018037
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08295367478003975 6.2422e-08  
a 5.239949337885046 1.0339e-07 au
q 4.805276284646245 3.3792e-07 au
i 15.36672521554104 5.009e-06 deg
node 114.4872938272973 2.3764e-05 deg
peri 254.4415845778081 4.5219e-05 deg
M 230.4335102030687 4.2727e-05 deg
tp 2460777.309585033474
(2025-Apr-11.80958503)
0.0005472 TDB
period 4381.159445638508
11.99
0.00012966
3.55e-07
d
yr
n .08217002929632791 2.4319e-09 deg/d
Q 5.674622391123846 1.1196e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1038  
   data-arc span      24190 days (66.23 yr)  
   first obs. used      1954-12-22  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51109  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:20:43  

Additional Information
 Earth MOID = 3.84219 au 
 Jupiter MOID = .0580977 au 
 T_jup = 2.922 
[ 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 11.59   n/a E2021B10  
diameter diameter 24.424 km 0.984 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.082   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

18037 (1999 NA38)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 NA38 = 1997 NA5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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