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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3255614829626079 5.2354e-08  
a 2.996831046832856 2.2733e-08 au
q 2.021178287037567 1.6255e-07 au
i 10.61864957083601 6.073e-06 deg
node 233.4636121098858 3.0184e-05 deg
peri 14.9553532470429 3.2347e-05 deg
M 281.0501613920707 1.8198e-05 deg
tp 2459016.066529674824
(2020-Jun-15.56652967)
9.8891e-05 TDB
period 1894.924084973509
5.19
2.1561e-05
5.903e-08
d
yr
n .1899812255566073 2.1617e-09 deg/d
Q 3.972483806628145 3.0134e-08 au
  Orbit Determination Parameters
   # obs. used (total)      962  
   data-arc span      13178 days (36.08 yr)  
   first obs. used      1983-03-08  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54625  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:26:33  

Additional Information
 Earth MOID = 1.00957 au 
 Jupiter MOID = 1.07531 au 
 T_jup = 3.147 
[ 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 13.4   n/a MPO371144  
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. 2019-January); 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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