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14803 (1981 EL7)
Classification: Main-belt Asteroid          SPK-ID: 2014803
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1933006213071589 5.0937e-08  
a 2.453377829055844 1.0266e-08 au
q 1.979138370398141 1.2198e-07 au
i 12.25862015581625 5.2018e-06 deg
node 200.057398908758 1.6891e-05 deg
peri 231.0476626694414 1.9378e-05 deg
M 208.159693036857 1.0054e-05 deg
tp 2459792.510832702095
(2022-Aug-01.01083270)
4.1143e-05 TDB
period 1403.605564525677
3.84
8.8099e-06
2.412e-08
d
yr
n .2564823117680183 1.6098e-09 deg/d
Q 2.927617287713547 1.225e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1145  
   data-arc span      14408 days (39.45 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-07-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5347  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:39:46  

Additional Information
 Earth MOID = 1.01528 au 
 Jupiter MOID = 2.47585 au 
 T_jup = 3.438 
[ 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 14.97   n/a E2020-QM5  
diameter diameter 4.744 km 0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.1012 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.088   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14803 (1981 EL7)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20000523/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EL7 = 1983 VR = 2000 EU107 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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