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JPL Small-Body Database Browser
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19657 (1999 RE123)
Classification: Main-belt Asteroid          SPK-ID: 2019657
[ 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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07822191564025562 2.8434e-08  
a 2.352514153735479 8.6243e-09 au
q 2.168495990059475 6.7253e-08 au
i 6.255213141046456 3.5075e-06 deg
node 287.0468055103086 3.5636e-05 deg
peri 323.7308237757311 4.5114e-05 deg
M 356.7849135628672 2.8505e-05 deg
tp 2459012.270284138430
(2020-Jun-11.77028414)		 0.00010436 TDB
period 1317.943505622703
3.61		 7.2473e-06
1.984e-08		 d
yr
n .273152831258808 1.5021e-09 deg/d
Q 2.536532317411484 9.2989e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2013  
   data-arc span      15535 days (42.53 yr)  
   first obs. used      1977-07-20  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47181  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:53:36  

Additional Information
 Earth MOID = 1.15731 au 
 Jupiter MOID = 2.50739 au 
 T_jup = 3.545 
[ 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 13.6   n/a MPO365487  
diameter diameter 4.373 km 0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.254   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19657 (1999 RE123)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RE123 = 1998 FK104 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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