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JPL Small-Body Database Browser
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18198 (2056 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2018198
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1205174823625579 8.837e-08  
a 2.928410920031259 2.1714e-08 au
q 2.57548620862607 2.6176e-07 au
i 12.34304057024978 8.1739e-06 deg
node 205.3717148040381 2.453e-05 deg
peri 350.4843177522615 3.2128e-05 deg
M 60.54396996397381 2.2894e-05 deg
tp 2458292.667231960384
(2018-Jun-23.16723196)
0.00011565 TDB
period 1830.401880818259
5.01
2.0359e-05
5.574e-08
d
yr
n .196678119582715 2.1875e-09 deg/d
Q 3.281335631436448 2.4331e-08 au
  Orbit Determination Parameters
   # obs. used (total)      906  
   data-arc span      21083 days (57.72 yr)  
   first obs. used      1960-09-24  
   last obs. used      2018-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52445  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 17:47:44  

Additional Information
 Earth MOID = 1.57474 au 
 Jupiter MOID = 1.68576 au 
 T_jup = 3.232 
[ 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 13.8   n/a MPO350947  
diameter diameter 9.669 km 0.290 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18198 (2056 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2056 P-L = 1998 FM99 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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