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72557 (2001 EN5)
Classification: Main-belt Asteroid          SPK-ID: 2072557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05910760368698973 4.8611e-08  
a 2.743235426857535 1.6985e-08 au
q 2.581089354426729 1.3538e-07 au
i 7.208123491804317 5.3282e-06 deg
node 27.86626476421284 3.3081e-05 deg
peri 11.5214680079026 4.771e-05 deg
M 253.4721417458586 3.5177e-05 deg
tp 2459691.581691203071
(2022-Apr-22.08169120)
0.00016313 TDB
period 1659.560341590107
4.54
1.5413e-05
4.22e-08
d
yr
n .2169249234137917 2.0146e-09 deg/d
Q 2.90538149928834 1.7988e-08 au
  Orbit Determination Parameters
   # obs. used (total)      724  
   data-arc span      9384 days (25.69 yr)  
   first obs. used      1994-10-12  
   last obs. used      2020-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55696  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:02:44  

Additional Information
 Earth MOID = 1.58747 au 
 Jupiter MOID = 2.347 au 
 T_jup = 3.335 
[ 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 15.07   n/a E2021B10  
diameter diameter 5.624 km 0.232 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72557 (2001 EN5)          Discovered 2001-Mar-02 by LONEOS at Anderson Mesa
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 EN5 = 1999 XO256 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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