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22808 (1999 RU12)
Classification: Jupiter Trojan          SPK-ID: 2022808
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .185359804311534 6.1378e-08  
a 5.185676762036156 1.1895e-07 au
q 4.224460732202265 3.7911e-07 au
i 10.47593318177315 6.3411e-06 deg
node 310.0672463970665 3.1378e-05 deg
peri 342.3723263118073 3.5838e-05 deg
M 326.9018792093185 2.1325e-05 deg
tp 2459597.058649034031
(2022-Jan-17.55864903)
0.00026146 TDB
period 4313.269461885706
11.81
0.0001484
4.063e-07
d
yr
n .08346336883914798 2.8716e-09 deg/d
Q 6.146892791870046 1.4099e-07 au
  Orbit Determination Parameters
   # obs. used (total)      684  
   data-arc span      9657 days (26.44 yr)  
   first obs. used      1994-02-11  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52574  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:13:18  

Additional Information
 Earth MOID = 3.20832 au 
 Jupiter MOID = .655639 au 
 T_jup = 2.933 
[ 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 12.12   n/a E2021B10  

22808 (1999 RU12)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RU12 = 1998 MW40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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