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66237 (1999 ET5)
Classification: Main-belt Asteroid          SPK-ID: 2066237
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07711295137093097 3.2069e-08  
a 2.757185665105102 1.2483e-08 au
q 2.544570940991224 9.2006e-08 au
i 4.94155291665406 3.3336e-06 deg
node 147.6251601270818 4.2634e-05 deg
peri 301.6362396755819 5.0908e-05 deg
M 345.3532434054488 2.5886e-05 deg
tp 2459268.535629629058
(2021-Feb-23.03562963)
0.0001202 TDB
period 1672.235522475499
4.58
1.1356e-05
3.109e-08
d
yr
n .2152806797615882 1.462e-09 deg/d
Q 2.969800389218979 1.3446e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1036  
   data-arc span      9886 days (27.07 yr)  
   first obs. used      1994-01-19  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53475  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:26  

Additional Information
 Earth MOID = 1.56512 au 
 Jupiter MOID = 2.16475 au 
 T_jup = 3.333 
[ 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 15.09   n/a MPCxxxxx  
diameter diameter 5.230 km 0.179 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.078   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66237 (1999 ET5)          Discovered 1999-Mar-13 by Tucker, R. A. at Goodricke-Pigott
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 ET5 = 2001 RO116 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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