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19702 (1999 SK23)
Classification: Main-belt Asteroid          SPK-ID: 2019702
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1558912977338101 3.6605e-08  
a 3.074339824522001 1.816e-08 au
q 2.595076999602533 1.1839e-07 au
i 7.088438781087886 3.578e-06 deg
node 56.74570285716424 3.3418e-05 deg
peri 336.9939404209775 3.6016e-05 deg
M 318.0045034430656 1.5385e-05 deg
tp 2459430.181731327967
(2021-Aug-03.68173133)
8.5236e-05 TDB
period 1968.911670468506
5.39
1.7445e-05
4.776e-08
d
yr
n .1828421281663374 1.6201e-09 deg/d
Q 3.55360264944147 2.0991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1633  
   data-arc span      25206 days (69.01 yr)  
   first obs. used      1951-12-01  
   last obs. used      2020-12-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47989  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:03:13  

Additional Information
 Earth MOID = 1.60254 au 
 Jupiter MOID = 1.87844 au 
 T_jup = 3.199 
[ 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 13.29   n/a E2021B10  
diameter diameter 11.979 km 0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19702 (1999 SK23)          Discovered 1999-Sep-30 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 SK23 = 1951 XM1 = 1978 WH16 = 1999 RD221 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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