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17154 (1999 JS121)
Classification: Main-belt Asteroid          SPK-ID: 2017154
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08816393160015339 3.6323e-08  
a 2.979054769073781 1.6851e-08 au
q 2.716409588180049 1.1569e-07 au
i 9.049291370252954 3.6505e-06 deg
node 261.7143142961634 2.5465e-05 deg
peri 40.0939792552644 3.3907e-05 deg
M 263.2121515744002 2.3448e-05 deg
tp 2459105.433858344778
(2020-Sep-12.93385834)
0.00012357 TDB
period 1878.088953943947
5.14
1.5935e-05
4.363e-08
d
yr
n .1916842113596418 1.6264e-09 deg/d
Q 3.241699949967512 1.8337e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2281  
   data-arc span      13723 days (37.57 yr)  
   first obs. used      1982-01-20  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49669  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:23:40  

Additional Information
 Earth MOID = 1.70724 au 
 Jupiter MOID = 1.93298 au 
 T_jup = 3.235 
[ 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 12.4   n/a MPO473995  
diameter diameter 10.444 km 0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.891981 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.234   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17154 (1999 JS121)          Discovered 1999-May-13 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JS121 = 1982 BW11 = 1990 UG12 = 1998 FZ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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