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JPL Small-Body Database Browser
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4412 Chephren (2535 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2004412
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1718593023254653 3.7158e-08  
a 3.130132725959853 1.5768e-08 au
q 2.592190299490286 1.1936e-07 au
i 2.177673819267707 4.0222e-06 deg
node 136.9087030759374 0.0001088 deg
peri 212.499746686775 0.00010942 deg
M 276.9784150290702 1.3614e-05 deg
tp 2459466.977903048239
(2021-Sep-09.47790305)
7.7813e-05 TDB
period 2022.751615211487
5.54
1.5284e-05
4.185e-08
d
yr
n .1779753862474907 1.3448e-09 deg/d
Q 3.668075152429421 1.8478e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2050  
   data-arc span      24041 days (65.82 yr)  
   first obs. used      1954-07-03  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .522  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:07:34  

Additional Information
 Earth MOID = 1.58629 au 
 Jupiter MOID = 1.75922 au 
 T_jup = 3.189 
[ 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 12.9   n/a MPO302090  
diameter diameter 14.763 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.071   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4412 Chephren (2535 P-L)          Discovered 1960-Sep-26 by van Houten and Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 2535 P-L = 1980 FB5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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