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17953 (1999 JB20)
Classification: Main-belt Asteroid          SPK-ID: 2017953
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 .3260449184109527 5.0099e-08  
a 2.997876043406962 1.4829e-08 au
q 2.02043379342819 1.5526e-07 au
i 10.61576058858349 5.509e-06 deg
node 233.4377295512942 1.8312e-05 deg
peri 15.00319613741387 1.9649e-05 deg
M 35.01001882908335 4.5779e-06 deg
tp 2459016.122136656428
(2020-Jun-15.62213666)
2.4658e-05 TDB
period 1895.915312920263
5.19
1.4067e-05
3.851e-08
d
yr
n .1898818990208455 1.4089e-09 deg/d
Q 3.975318293385735 1.9664e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1553  
   data-arc span      13737 days (37.61 yr)  
   first obs. used      1983-03-08  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47206  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:18:24  

Additional Information
 Earth MOID = 1.00751 au 
 Jupiter MOID = 1.07191 au 
 T_jup = 3.146 
[ 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 13.71   n/a E2021B10  
diameter diameter 7.322 km 0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 37.279 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.098   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17953 (1999 JB20)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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