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16660 (1993 US7)
Classification: Main-belt Asteroid          SPK-ID: 2016660
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08156243552930337 1.3452e-08  
a 2.396896159421965 7.7592e-09 au
q 2.201399470948676 3.2661e-08 au
i 6.749347207727068 2.7843e-07 deg
node 97.10627434640821 4.269e-06 deg
peri 167.9251468940215 1.4325e-05 deg
M 235.3831623147976 1.2423e-05 deg
tp 2459669.687552348898
(2022-Mar-31.18755235)
4.7769e-05 TDB
period 1355.414902055889
3.71
6.5816e-06
1.802e-08
d
yr
n .2656013294925067 1.2897e-09 deg/d
Q 2.592392847895254 8.3921e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2075  
   data-arc span      10016 days (27.42 yr)  
   first obs. used      1993-10-10  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48109  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:38:02  

Additional Information
 Earth MOID = 1.18417 au 
 Jupiter MOID = 2.46009 au 
 T_jup = 3.514 
[ 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 14.14   n/a E2021B10  
diameter diameter 3.715 km 0.244 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.244   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16660 (1993 US7)          Discovered 1993-Oct-20 by Elst, E. W. at La Silla
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 US7 = 1997 WY39 = 1999 GH7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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