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JPL Small-Body Database Browser
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4955 Gold (1990 SF2)
Classification: Main-belt Asteroid          SPK-ID: 2004955
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .132886263767262 4.1844e-08  
a 3.153983961556251 1.8635e-08 au
q 2.734862816923173 1.3056e-07 au
i 7.404829021070122 3.7312e-06 deg
node 89.44911073649656 3.4367e-05 deg
peri 250.1487662804476 3.7181e-05 deg
M 131.0705519611959 1.6044e-05 deg
tp 2458255.613205210588
8.9875e-05 TDB
period 2045.915288459135
n .1759603645521077 1.5594e-09 deg/d
Q 3.573105106189329 2.1111e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2338  
   data-arc span      13047 days (35.72 yr)  
   first obs. used      1984-08-02  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44857  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:14:23  

Additional Information
 Earth MOID = 1.73729 au 
 Jupiter MOID = 1.83329 au 
 T_jup = 3.180 
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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 11.8   n/a MPO502200  
diameter diameter 19.805 km 0.180 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.136   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

4955 Gold           Discovered 1990 Sept. 17 by H. E. Holt at Palomar.
Named in honor of Rob Gold (b. 1943), who has made many contributions to space science through numerous spacecraft missions including Ulysses, Geotail, Delta Star and ACE. Rob is currently the payload manager for the NEAR mission, the first spacecraft bound to orbit a minor planet. Rob played a key role in insuring that the six science instruments on NEAR were delivered and integrated on time and under cost for NASA's first Discovery class mission. Name proposed by J. Veverka and citation written by M. Robinson.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1990 SF2 = 1987 BQ2 = 1990 WB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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