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4247 Grahamsmith (1983 WC)
Classification: Main-belt Asteroid          SPK-ID: 2004247
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2271686737292317 3.8764e-08  
a 3.179970557371328 1.5015e-08 au
q 2.457580863355277 1.2319e-07 au
i 2.074770627177773 3.45e-06 deg
node 124.538584187099 0.0001201 deg
peri 288.2927343453158 0.0001203 deg
M 201.4727961122207 8.2468e-06 deg
tp 2460112.583027296910
(2023-Jun-17.08302730)
5.106e-05 TDB
period 2071.252641655909
5.67
1.467e-05
4.016e-08
d
yr
n .1738078652308634 1.231e-09 deg/d
Q 3.902360251387378 1.8426e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1776  
   data-arc span      24035 days (65.80 yr)  
   first obs. used      1954-09-04  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50127  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:07:00  

Additional Information
 Earth MOID = 1.46896 au 
 Jupiter MOID = 1.48123 au 
 T_jup = 3.158 
[ 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 13.45   n/a MPCxxxxx  
diameter diameter 12.430 km 0.237 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4247 Grahamsmith (1983 WC)          Discovered 1983-Nov-28 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1983 WC = 1973 AK1 = 1988 RW9 = 3050 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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