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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07862642984611323 1.58e-08  
a 2.35325519383344 7.8893e-09 au
q 2.168227139425493 3.8567e-08 au
i 6.254321028804875 6.5284e-07 deg
node 287.0459815103265 5.5851e-06 deg
peri 323.6568175373877 1.1217e-05 deg
M 51.44758113645078 1.0792e-05 deg
tp 2459012.063761815960
(2020-Jun-11.56376182)
3.949e-05 TDB
period 1318.566281402717
3.61
6.6307e-06
1.815e-08
d
yr
n .2730238176703752 1.373e-09 deg/d
Q 2.538283248241386 8.5096e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2289  
   data-arc span      15787 days (43.22 yr)  
   first obs. used      1977-07-20  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45284  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:00:55  

Additional Information
 Earth MOID = 1.15543 au 
 Jupiter MOID = 2.50457 au 
 T_jup = 3.544 
[ 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 13.64   n/a E2021B10  
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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