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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1809427746873697 3.8001e-08  
a 3.101505276342649 1.5545e-08 au
q 2.540310305933693 1.1757e-07 au
i .2811914326029384 5.0099e-06 deg
node 358.1719274265227 0.00068758 deg
peri 38.9085927811408 0.00068768 deg
M 133.5534934517097 1.2986e-05 deg
tp 2458260.366664434778
(2018-May-21.86666443)
6.932e-05 TDB
period 1995.06575168565
5.46
1.4999e-05
4.107e-08
d
yr
n .1804451806642626 1.3566e-09 deg/d
Q 3.662700246751605 1.8357e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2200  
   data-arc span      23803 days (65.17 yr)  
   first obs. used      1955-04-16  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4849  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:11:56  

Additional Information
 Earth MOID = 1.54761 au 
 Jupiter MOID = 1.76551 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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