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14804 (1981 EW13)
Classification: Main-belt Asteroid          SPK-ID: 2014804
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0802990747679616 4.0455e-08  
a 2.427341550162488 7.8998e-09 au
q 2.232428269538611 9.6784e-08 au
i 1.764794829763271 2.9068e-06 deg
node 270.9814150716787 0.00014203 deg
peri 244.932229149477 0.00014339 deg
M 201.8511692682486 2.0862e-05 deg
tp 2459807.317708949180
(2022-Aug-15.81770895)
8.1252e-05 TDB
period 1381.321469219347
3.78
6.7432e-06
1.846e-08
d
yr
n .2606199990531196 1.2723e-09 deg/d
Q 2.622254830786365 8.5341e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1543  
   data-arc span      15496 days (42.43 yr)  
   first obs. used      1978-07-07  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52778  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:39:49  

Additional Information
 Earth MOID = 1.24241 au 
 Jupiter MOID = 2.36219 au 
 T_jup = 3.505 
[ 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 15.17   n/a E2020-QM5  
rotation period rot_per 3.619 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

14804 (1981 EW13)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20000523/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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