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JPL Small-Body Database Browser
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37549 (1981 ET30)
Classification: Main-belt Asteroid          SPK-ID: 2037549
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05079192524569735 3.6148e-08  
a 2.312590890399671 8.2432e-09 au
q 2.195129946770611 8.361e-08 au
i 6.282287749623344 4.1316e-06 deg
node 174.0749358454836 3.2193e-05 deg
peri 10.88851868183663 4.8448e-05 deg
M 46.98410471356083 3.5878e-05 deg
tp 2458832.853265792572
(2019-Dec-15.35326579)
0.00012799 TDB
period 1284.537072327241
3.52
6.8681e-06
1.88e-08
d
yr
n .2802566058664039 1.4985e-09 deg/d
Q 2.430051834028732 8.6619e-09 au
  Orbit Determination Parameters
   # obs. used (total)      850  
   data-arc span      14322 days (39.21 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56397  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:26:13  

Additional Information
 Earth MOID = 1.19721 au 
 Jupiter MOID = 2.52555 au 
 T_jup = 3.574 
[ 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 15.9   n/a MPO468205  

37549 (1981 ET30)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 ET30 = 1999 LX34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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