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21124 (1992 YR2)
Classification: Main-belt Asteroid          SPK-ID: 2021124
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06201872786634158 3.1501e-08  
a 2.373913962886271 7.5816e-09 au
q 2.226686838843919 7.2757e-08 au
i 5.1421713611981 3.1927e-06 deg
node 69.09025330233489 3.8034e-05 deg
peri 169.5419883915831 4.7013e-05 deg
M 146.4013211993085 2.7455e-05 deg
tp 2458853.201652019579
(2020-Jan-04.70165202)
0.00010188 TDB
period 1335.967487661412
3.66
6.4001e-06
1.752e-08
d
yr
n .2694676354962603 1.2909e-09 deg/d
Q 2.521141086928623 8.0518e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1907  
   data-arc span      10431 days (28.56 yr)  
   first obs. used      1992-12-18  
   last obs. used      2021-07-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50888  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:57:50  

Additional Information
 Earth MOID = 1.21465 au 
 Jupiter MOID = 2.46386 au 
 T_jup = 3.535 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457044.5 (2015-Jan-22.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06169801245966 3.1583e-08  
q 2.228329784073492 7.3039e-08 au
tp 2457516.350485284842
(2016-May-07.85048528)
0.00010248 TDB
node 69.18026647723714 3.7987e-05 deg
peri 169.553415846066 4.6995e-05 deg
i 5.144877742774621 3.1941e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1907  
   data-arc span      10431 days (28.56 yr)  
   first obs. used      1992-12-18  
   last obs. used      2021-07-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50888  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:57:50  

Additional Information
 Jupiter MOID = 2.46386 au 
 T_jup = 3.535 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.975141852249271E-16 -2.297031215851065E-15 -3.602998510325309E-13 4.43635409965635E-15 -1.280574609386244E-13 1.645611500322247E-17
q -2.297031215851065E-15 5.334633700255128E-15 8.056551120021942E-13 -9.83119680773776E-15 2.844075786214617E-13 4.087670188986986E-17
tp -3.602998510325309E-13 8.056551120021942E-13 1.050178223665737E-8 2.784224856630851E-12 2.845450574104463E-9 -1.674260447756141E-12
node 4.43635409965635E-15 -9.83119680773776E-15 2.784224856630851E-12 1.442994715048333E-9 -1.436160841836357E-9 -1.226003861161676E-11
peri -1.280574609386244E-13 2.844075786214617E-13 2.845450574104463E-9 -1.436160841836357E-9 2.208494093869083E-9 1.175459878420785E-11
i 1.645611500322247E-17 4.087670188986986E-17 -1.674260447756141E-12 -1.226003861161676E-11 1.175459878420785E-11 1.020212731265867E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO384935  

21124 (1992 YR2)          Discovered 1992-Dec-18 by Elst, E. W. at Caussols
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1992 YR2 = 1998 MW31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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