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JPL Small-Body Database Browser
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2555 Thomas (1980 OC)
Classification: Main-belt Asteroid          SPK-ID: 2002555
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08083377619665083 3.5687e-08  
a 2.869890913540458 1.1016e-08 au
q 2.637906793726527 1.0587e-07 au
i .9022979268642087 3.3604e-06 deg
node 282.874247873422 0.00024129 deg
peri 91.19617655983603 0.00024226 deg
M 29.18250499497685 2.1023e-05 deg
tp 2458856.548372782148
(2020-Jan-08.04837278)
0.0001037 TDB
period 1775.810054940342
4.86
1.0224e-05
2.799e-08
d
yr
n .2027243842878759 1.1672e-09 deg/d
Q 3.10187503335439 1.1906e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2917  
   data-arc span      24986 days (68.41 yr)  
   first obs. used      1951-08-11  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48377  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:37:56  

Additional Information
 Earth MOID = 1.63856 au 
 Jupiter MOID = 2.32042 au 
 T_jup = 3.293 
[ 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 11.9   n/a MPO347540  
diameter diameter 10.256 km 1.605 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.320   0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2555 Thomas (1980 OC)          Discovered 1980-Jul-17 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1980 OC = 1961 US = 1971 UZ2 = 1976 YQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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