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JPL Small-Body Database Browser
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5656 Oldfield (A920 TA)
Classification: Main-belt Asteroid          SPK-ID: 2005656
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2638315261184219 4.2667e-08  
a 2.458906225973553 1.1679e-08 au
q 1.810169243792862 1.0729e-07 au
i 4.014503522372132 4.8667e-06 deg
node 248.6688284781146 6.9702e-05 deg
peri 83.68266820080069 7.0804e-05 deg
M 227.9562893852543 1.8764e-05 deg
tp 2459117.066925714707
(2020-Sep-24.56692571)
7.6309e-05 TDB
period 1408.352525020055
3.86
1.0033e-05
2.747e-08
d
yr
n .2556178184115327 1.8211e-09 deg/d
Q 3.107643208154245 1.476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1209  
   data-arc span      35999 days (98.56 yr)  
   first obs. used      1920-10-08  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54071  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 18:40:05  

Additional Information
 Earth MOID = .804333 au 
 Jupiter MOID = 2.28895 au 
 T_jup = 3.439 
[ 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 14.1   n/a MPO431563  
diameter diameter 7.691 km 0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.075   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5656 Oldfield (A920 TA)          Discovered 1920-Oct-08 by Baade, W. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A920 TA = 1978 WW18 = 1981 JZ5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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