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71657 (2000 EP122)
Classification: Main-belt Asteroid          SPK-ID: 2071657
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05600269352799837 4.347e-08  
a 2.264090271257362 1.0895e-08 au
q 2.137295117676413 9.6254e-08 au
i 5.642702098518852 3.7649e-06 deg
node 244.9844548449879 4.6202e-05 deg
peri 316.3704195141348 5.8035e-05 deg
M 183.6723192662261 3.5724e-05 deg
tp 2459209.976590182142
(2020-Dec-26.47659018)
0.00012396 TDB
period 1244.339921857458
3.41
8.9819e-06
2.459e-08
d
yr
n .2893100138285516 2.0883e-09 deg/d
Q 2.390885424838311 1.1505e-08 au
  Orbit Determination Parameters
   # obs. used (total)      763  
   data-arc span      7779 days (21.30 yr)  
   first obs. used      1997-05-31  
   last obs. used      2018-09-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48596  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 02:17:03  

Additional Information
 Earth MOID = 1.13664 au 
 Jupiter MOID = 2.58611 au 
 T_jup = 3.609 
[ 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 15.6   n/a MPO449453  
diameter diameter 1.825 km 0.259 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.254   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71657 (2000 EP122)          Discovered 2000-Mar-11 by LONEOS at Anderson Mesa
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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