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541122 (2018 RD22)
Classification: Mars-crossing Asteroid          SPK-ID: 2541122
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1257547374321772 9.6627e-08  
a 1.874790097107015 1.4682e-08 au
q 1.639026360704877 1.8871e-07 au
i 17.10784937625649 1.1061e-05 deg
node 338.749976541388 1.7189e-05 deg
peri 49.67130355653552 4.2388e-05 deg
M 359.7521551680744 3.9827e-05 deg
tp 2459397.145512668288
(2021-Jul-01.64551267)
0.00010373 TDB
period 937.6211671562279
2.57
1.1014e-05
3.015e-08
d
yr
n .3839503763464165 4.5102e-09 deg/d
Q 2.110553833509154 1.6528e-08 au
  Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      7204 days (19.72 yr)  
   first obs. used      2000-08-26  
   last obs. used      2020-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52002  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:22:11  

Additional Information
 Earth MOID = .671743 au 
 Jupiter MOID = 3.27994 au 
 T_jup = 3.914 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457835.5 (2017-Mar-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1259439966652225 9.6605e-08  
q 1.638833999251446 1.8865e-07 au
tp 2457521.552879709139
(2016-May-13.05287971)
9.2599e-05 TDB
node 338.7935398559968 1.7185e-05 deg
peri 49.61161947782536 4.235e-05 deg
i 17.10881664962414 1.1061e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      7204 days (19.72 yr)  
   first obs. used      2000-08-26  
   last obs. used      2020-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52002  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:22:11  

Additional Information
 Jupiter MOID = 3.27994 au 
 T_jup = 3.914 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.332461722119914E-15 -1.819567119241964E-14 -6.219704053103808E-12 7.223166728045002E-15 -2.505857659527195E-12 -1.676141211370499E-13
q -1.819567119241964E-14 3.558806269283755E-14 1.215237858641903E-11 -1.68129834486631E-14 4.911289018047357E-12 3.310455955513301E-13
tp -6.219704053103808E-12 1.215237858641903E-11 8.574609958101314E-9 1.178441189367951E-11 3.592546362306208E-9 1.303213030303783E-10
node 7.223166728045002E-15 -1.68129834486631E-14 1.178441189367951E-11 2.953235144432274E-10 -2.747122286529831E-10 6.126174667457967E-11
peri -2.505857659527195E-12 4.911289018047357E-12 3.592546362306208E-9 -2.747122286529831E-10 1.793537760418157E-9 -4.452741966938339E-12
i -1.676141211370499E-13 3.310455955513301E-13 1.303213030303783E-10 6.126174667457967E-11 -4.452741966938339E-12 1.223395876208811E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.49   .45946 MPCxxxxx autocmod 2.6n

541122 (2018 RD22)          Discovered 2000-Aug-26 by LINEAR at Socorro
Reference: Last Updated: 2019-05-29

Alternate Designations
 2018 RD22 = 2000 QP34 = 2012 DZ60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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