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19646 (1999 RF102)
Classification: Main-belt Asteroid          SPK-ID: 2019646
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09826760910047071 2.5073e-08  
a 3.021973917019712 1.6376e-08 au
q 2.725011765430201 8.2019e-08 au
i 14.26686352311524 3.2132e-07 deg
node 292.810540358327 1.9096e-06 deg
peri 163.058253256311 6.4163e-06 deg
M 273.687308598965 8.794e-06 deg
tp 2459660.551713337889
(2022-Mar-22.05171334)
4.8259e-05 TDB
period 1918.821138737591
5.25
1.5597e-05
4.27e-08
d
yr
n .1876151938980863 1.525e-09 deg/d
Q 3.318936068609223 1.7985e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2252  
   data-arc span      13232 days (36.23 yr)  
   first obs. used      1984-11-21  
   last obs. used      2021-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46101  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 02:21:10  

Additional Information
 Earth MOID = 1.74464 au 
 Jupiter MOID = 1.83959 au 
 T_jup = 3.192 
[ 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 12.55   n/a E2021B10  
diameter diameter 22.716 km 0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.023   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

19646 (1999 RF102)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RF102 = 1984 WS1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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