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JPL Small-Body Database Browser
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437237 (2012 XG21)
Classification: Main-belt Asteroid          SPK-ID: 2437237
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1718509302634121 9.1288e-08  
a 2.733364723393068 4.0367e-08 au
q 2.263633452928775 2.6165e-07 au
i 5.544946055846647 1.1308e-05 deg
node 239.7671618346074 9.3904e-05 deg
peri 97.18921776642487 9.8838e-05 deg
M 218.6373831644851 3.003e-05 deg
tp 2459248.652021449397
(2021-Feb-03.15202145)
0.0001415 TDB
period 1650.611264456739
4.52
3.6565e-05
1.001e-07
d
yr
n .218101019756754 4.8314e-09 deg/d
Q 3.203095993857362 4.7304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      71  
   data-arc span      5165 days (14.14 yr)  
   first obs. used      2003-11-30  
   last obs. used      2018-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52229  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-06 09:50:53  

Additional Information
 Earth MOID = 1.26178 au 
 Jupiter MOID = 2.21452 au 
 T_jup = 3.325 
[ 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 17.2   n/a MPO434608  

437237 (2012 XG21)          Discovered 2003-Nov-30 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-06-04

Alternate Designations
 2012 XG21 = 2003 WP165 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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