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4657 Lopez (1979 SU9)
Classification: Main-belt Asteroid          SPK-ID: 2004657
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .181163388568152 2.049e-08  
a 3.100810792006836 1.495e-08 au
q 2.539057401618183 6.6156e-08 au
i .2811634984027914 9.7126e-07 deg
node 358.1704182719327 0.00026073 deg
peri 38.8667389637344 0.00025995 deg
M 169.6967587618182 9.8295e-06 deg
tp 2458260.381987600599
(2018-May-21.88198760)
5.0385e-05 TDB
period 1994.39569107394
5.46
1.4423e-05
3.949e-08
d
yr
n .1805058051474969 1.3054e-09 deg/d
Q 3.66256418239549 1.7658e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2283  
   data-arc span      24084 days (65.94 yr)  
   first obs. used      1955-04-16  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48819  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:46:10  

Additional Information
 Earth MOID = 1.54528 au 
 Jupiter MOID = 1.76688 au 
 T_jup = 3.196 
[ 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 12.74   n/a E2021B10  
diameter diameter 15.967 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.120   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4657 Lopez (1979 SU9)          Discovered 1979-Sep-22 by Chernykh, N. S. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1979 SU9 = 1978 NU7 = 1987 GJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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