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JPL Small-Body Database Browser
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(1999 RM45)
Classification: Apollo [NEO, PHA]          SPK-ID: 3022036
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 72 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6442897851253645 9.7581e-08  
a 1.683461918592597 1.3576e-08 au
q .5988246007958387 1.688e-07 au
i 10.89329574725759 1.1532e-05 deg
node 162.8314054256473 8.7405e-06 deg
peri 88.69948611069017 1.9793e-05 deg
M 32.35347947842646 8.1233e-07 deg
tp 2459324.799552668208
(2021-Apr-20.29955267)
1.0396e-06 TDB
period 797.8171577080869
2.18
9.6505e-06
2.642e-08
d
yr
n .4512312082058785 5.4581e-09 deg/d
Q 2.768099236389354 2.2322e-08 au
  Orbit Determination Parameters
   # obs. used (total)      349  
   # delay obs. used      2  
   # Doppler obs. used      0  
   data-arc span      7839 days (21.46 yr)  
   first obs. used      1999-09-14  
   last obs. used      2021-03-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .34547  
   source      ORB  
   producer      Giorgini  
   solution date      2021-Jul-01 17:37:29  

Additional Information
 Earth MOID = .0024881 au 
 Jupiter MOID = 2.38362 au 
 T_jup = 3.945 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458202.5 (2018-Mar-25.0) TDB
Reference: JPL 72 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6442123658112758 9.7771e-08  
q .5981764718547978 1.683e-07 au
tp 2458528.548893842575
(2019-Feb-14.04889384)
7.7115e-06 TDB
node 162.8703712115671 8.7523e-06 deg
peri 88.71440433274002 1.9738e-05 deg
i 10.88908782218802 1.1555e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      349  
   # delay obs. used      2  
   # Doppler obs. used      0  
   data-arc span      7839 days (21.46 yr)  
   first obs. used      1999-09-14  
   last obs. used      2021-03-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .34547  
   source      ORB  
   producer      Giorgini  
   solution date      2021-Jul-01 17:37:29  

Additional Information
 Jupiter MOID = 2.38362 au 
 T_jup = 3.945 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.559192854608275E-15 -1.645427571331577E-14 6.756209992831733E-13 6.369183330534768E-14 1.732802642843328E-12 9.179209410813684E-15
q -1.645427571331577E-14 2.832550023516744E-14 -1.168471184259287E-12 -1.105017246586448E-13 -2.982265087202024E-12 -1.438666466849535E-14
tp 6.756209992831733E-13 -1.168471184259287E-12 5.946746125269509E-11 3.188402911055647E-12 1.25044802420922E-10 -1.976685053018498E-12
node 6.369183330534768E-14 -1.105017246586448E-13 3.188402911055647E-12 7.660355786063592E-11 -6.400596394300416E-11 -7.688572230006532E-11
peri 1.732802642843328E-12 -2.982265087202024E-12 1.25044802420922E-10 -6.400596394300416E-11 3.896044271406414E-10 7.480733875832159E-11
i 9.179209410813684E-15 -1.438666466849535E-14 -1.976685053018498E-12 -7.688572230006532E-11 7.480733875832159E-11 1.335228752896623E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 19.76   n/a E2021-HE1  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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