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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2435003987150747 3.1271e-08  
a 2.369808451156062 8.3932e-09 au
q 1.792759148421207 7.3425e-08 au
i 22.6641603966959 4.2919e-06 deg
node 178.5674849295151 9.3174e-06 deg
peri 292.1322388064702 1.2322e-05 deg
M 54.56347527838467 8.6591e-06 deg
tp 2458398.538858936238
(2018-Oct-07.03885894)
3.1721e-05 TDB
period 1332.503298442882
3.65
7.0791e-06
1.938e-08
d
yr
n .2701681867659794 1.4353e-09 deg/d
Q 2.946857753890916 1.0437e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1717  
   data-arc span      22697 days (62.14 yr)  
   first obs. used      1957-03-21  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43138  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:30:59  

Additional Information
 Earth MOID = .912014 au 
 Jupiter MOID = 2.38525 au 
 T_jup = 3.404 
[ 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 12.9   n/a MPO384794  
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. 2019-January); 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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