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213394 (2001 US187)
Classification: Jupiter Trojan          SPK-ID: 2213394
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05086452791543773 6.9795e-08  
a 5.227652766025415 1.6002e-07 au
q 4.9617506759757 3.8768e-07 au
i 8.554067973130991 8.2162e-06 deg
node 183.0951140584675 3.6103e-05 deg
peri 157.7444752489035 8.3799e-05 deg
M 243.6043786584125 8.0493e-05 deg
tp 2460612.038306213702
(2024-Oct-28.53830621)
0.0010142 TDB
period 4365.746618127911
11.95
0.00020046
5.488e-07
d
yr
n .08246012228588122 3.7863e-09 deg/d
Q 5.49355485607513 1.6816e-07 au
  Orbit Determination Parameters
   # obs. used (total)      325  
   data-arc span      8825 days (24.16 yr)  
   first obs. used      1996-03-27  
   last obs. used      2020-05-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53482  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:42:31  

Additional Information
 Earth MOID = 3.95379 au 
 Jupiter MOID = .0121884 au 
 T_jup = 2.975 
[ 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 13.14   n/a E2021B55  

213394 (2001 US187)          Discovered 2001-Oct-17 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

Alternate Designations
 2001 US187 = 2007 FF28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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