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4533 Orth (1986 EL)
Classification: Main-belt Asteroid          SPK-ID: 2004533
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2429952500359143 1.0415e-08  
a 2.371346202480215 7.8014e-09 au
q 1.795120339086819 2.3885e-08 au
i 22.67453223976126 5.0903e-07 deg
node 178.4322889609648 1.8392e-06 deg
peri 292.4870152418941 3.5149e-06 deg
M 216.2748288681578 3.5765e-06 deg
tp 2459733.001953171029
(2022-Jun-02.50195317)
1.5462e-05 TDB
period 1333.800486246903
3.65
6.582e-06
1.802e-08
d
yr
n .2699054346673551 1.3319e-09 deg/d
Q 2.94757206587361 9.6971e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2182  
   data-arc span      23279 days (63.73 yr)  
   first obs. used      1957-03-21  
   last obs. used      2020-12-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41028  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:28:24  

Additional Information
 Earth MOID = .912928 au 
 Jupiter MOID = 2.37924 au 
 T_jup = 3.403 
[ 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 12.93   n/a E2021B10  
diameter diameter 7.526 km 0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 24. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Stephens, R.D. (2009) Minor Planet Bull. 36, 18-19.]
geometric albedo albedo 0.272   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4533 Orth (1986 EL)          Discovered 1986-Mar-07 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1986 EL = 1957 FA = 1977 RK2 = 1988 TW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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