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43748 (1981 ET37)
Classification: Main-belt Asteroid          SPK-ID: 2043748
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2441300955671268 3.3646e-08  
a 2.26225866824013 6.9871e-09 au
q 1.709973243365106 7.4167e-08 au
i 3.595051463098335 4.1145e-06 deg
node 219.0099615217248 7.1964e-05 deg
peri 60.89368652975731 7.2821e-05 deg
M 173.707628928109 1.1145e-05 deg
tp 2458600.808062771568
(2019-Apr-27.30806277)
3.8016e-05 TDB
period 1242.830258719287
3.40
5.7578e-06
1.576e-08
d
yr
n .289661438055888 1.342e-09 deg/d
Q 2.814544093115154 8.6929e-09 au
  Orbit Determination Parameters
   # obs. used (total)      817  
   data-arc span      14568 days (39.89 yr)  
   first obs. used      1981-03-01  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54741  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:22:06  

Additional Information
 Earth MOID = .695374 au 
 Jupiter MOID = 2.33462 au 
 T_jup = 3.576 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.08   n/a MPCxxxxx  

43748 (1981 ET37)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 ET37 = 1998 FM144 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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