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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 ]

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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 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 
[ 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 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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