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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1807429952771791 3.9796e-08  
a 3.102806308203057 1.6986e-08 au
q 2.54199580229351 1.2447e-07 au
i .281059529437041 5.0747e-06 deg
node 358.1849925047395 0.00083123 deg
peri 39.02544808891601 0.00083132 deg
M 61.27393172764407 1.2913e-05 deg
tp 2458260.715414473459
(2018-May-22.21541447)
7.0568e-05 TDB
period 1996.32123058897
5.47
1.6393e-05
4.488e-08
d
yr
n .1803316993697403 1.4808e-09 deg/d
Q 3.663616814112604 2.0056e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1916  
   data-arc span      23402 days (64.07 yr)  
   first obs. used      1955-04-16  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49032  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:36:00  

Additional Information
 Earth MOID = 1.54872 au 
 Jupiter MOID = 1.76229 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 12.7   n/a MPO337291  
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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