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120639 (1996 KJ3)
Classification: Main-belt Asteroid          SPK-ID: 2120639
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3660701985418727 3.4681e-08  
a 3.077702198576954 2.126e-08 au
q 1.951047143691131 1.0238e-07 au
i 14.84884032576201 5.5247e-06 deg
node 153.4936956915954 1.7679e-05 deg
peri 123.4357105356469 1.9408e-05 deg
M 188.4452608065917 9.7064e-06 deg
tp 2460140.306702936953
(2023-Jul-14.80670294)
6.0055e-05 TDB
period 1972.142621346499
5.40
2.0435e-05
5.595e-08
d
yr
n .1825425788699839 1.8915e-09 deg/d
Q 4.204357253462777 2.9043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      596  
   data-arc span      8981 days (24.59 yr)  
   first obs. used      1996-05-19  
   last obs. used      2020-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52423  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:25:36  

Additional Information
 Earth MOID = .976536 au 
 Jupiter MOID = 1.37144 au 
 T_jup = 3.074 
[ 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 15.2   n/a MPO453677  
rotation period rot_per 85.9257 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

120639 (1996 KJ3)          Discovered 1996-May-24 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1996 KJ3 = 2001 FZ99 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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