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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08843984914662217 1.7138e-08  
a 2.981855698929624 1.3596e-08 au
q 2.718140830739293 5.3835e-08 au
i 9.040098200896221 6.5372e-07 deg
node 261.6808597935245 3.5212e-06 deg
peri 38.94781439625465 1.4588e-05 deg
M 19.18685059698102 1.1302e-05 deg
tp 2459100.262655184618
(2020-Sep-07.76265518)
5.9051e-05 TDB
period 1880.738266613457
5.15
1.2863e-05
3.522e-08
d
yr
n .1914141943037254 1.3091e-09 deg/d
Q 3.245570567119956 1.4798e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2541  
   data-arc span      14209 days (38.90 yr)  
   first obs. used      1982-01-20  
   last obs. used      2020-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47714  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 01:26:30  

Additional Information
 Earth MOID = 1.70727 au 
 Jupiter MOID = 1.92559 au 
 T_jup = 3.234 
[ 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 12.43   n/a E2021B10  
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 2.89186 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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