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85988 (1999 JX5)
Classification: Main-belt Asteroid          SPK-ID: 2085988
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1468625166843494 5.7742e-08  
a 2.786470305535151 2.2426e-08 au
q 2.37724226379805 1.6236e-07 au
i 27.75385108908764 6.8516e-06 deg
node 204.701174316475 9.4915e-06 deg
peri 335.3293483181758 1.972e-05 deg
M 228.9649034826377 2.0978e-05 deg
tp 2459618.893887220361
(2022-Feb-08.39388722)
0.00010257 TDB
period 1698.947879737184
4.65
2.051e-05
5.615e-08
d
yr
n .2118958470083789 2.5581e-09 deg/d
Q 3.195698347272251 2.572e-08 au
  Orbit Determination Parameters
   # obs. used (total)      688  
   data-arc span      7513 days (20.57 yr)  
   first obs. used      1999-05-12  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54747  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:04:15  

Additional Information
 Earth MOID = 1.39197 au 
 Jupiter MOID = 1.8095 au 
 T_jup = 3.149 
[ 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 14.7   n/a MPO449533  
rotation period rot_per 14.575 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

85988 (1999 JX5)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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