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120782 (1998 EM12)
Classification: Main-belt Asteroid          SPK-ID: 2120782
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08263501059170549 4.1156e-08  
a 2.669015468216918 1.6006e-08 au
q 2.448461346731388 1.0485e-07 au
i 21.85376066281411 7.0913e-06 deg
node 3.467014403408421 1.0791e-05 deg
peri 103.779771778888 4.4216e-05 deg
M 87.30886994616419 4.1654e-05 deg
tp 2458614.238938805981
(2019-May-10.73893881)		 0.00018422 TDB
period 1592.667298472532
4.36		 1.4326e-05
3.922e-08		 d
yr
n .2260359086579241 2.0332e-09 deg/d
Q 2.889569589702449 1.7328e-08 au
   Orbit Determination Parameters
   # obs. used (total)      726  
   data-arc span      8093 days (22.16 yr)  
   first obs. used      1998-03-01  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53626  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:40:11  

Additional Information
 Earth MOID = 1.54405 au 
 Jupiter MOID = 2.22871 au 
 T_jup = 3.274 
[ 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 MPO320375  

120782 (1998 EM12)          Discovered 1998-Mar-01 by Elst, E. W. at La Silla
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 EM12 = 2000 QA138 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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