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72991 (2002 EW7)
Classification: Main-belt Asteroid          SPK-ID: 2072991
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2804901997236774 4.356e-08  
a 2.582918696676093 1.1269e-08 au
q 1.858435315575395 1.1664e-07 au
i 27.93540518510471 4.1547e-06 deg
node 173.2434539904941 1.0754e-05 deg
peri 102.5669969674501 1.3422e-05 deg
M 113.3533147457161 7.9045e-06 deg
tp 2458723.084786155242
(2019-Aug-27.58478616)
3.2041e-05 TDB
period 1516.228064169672
4.15
9.9228e-06
2.717e-08
d
yr
n .2374312997544639 1.5538e-09 deg/d
Q 3.307402077776791 1.443e-08 au
  Orbit Determination Parameters
   # obs. used (total)      994  
   data-arc span      8306 days (22.74 yr)  
   first obs. used      1998-04-24  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43933  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:05:11  

Additional Information
 Earth MOID = 1.02239 au 
 Jupiter MOID = 2.46243 au 
 T_jup = 3.209 
[ 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 15.02   n/a MPCxxxxx  
diameter diameter 4.691 km 0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.106   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72991 (2002 EW7)          Discovered 2002-Mar-10 by NEAT at Haleakala
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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