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344450 (2002 JJ120)
Classification: Main-belt Asteroid          SPK-ID: 2344450
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039590560410447 5.8481e-08  
a 2.620512416619836 2.0365e-08 au
q 2.348086419444201 1.5307e-07 au
i 13.83382153556499 5.6853e-06 deg
node 113.2877433671773 2.4282e-05 deg
peri 111.8147015393914 3.779e-05 deg
M 86.8874115065163 2.61e-05 deg
tp 2458626.534000893532
(2019-May-23.03400089)
0.0001123 TDB
period 1549.450689622995
4.24
1.8062e-05
4.945e-08
d
yr
n .2323404045130301 2.7084e-09 deg/d
Q 2.892938413795471 2.2482e-08 au
  Orbit Determination Parameters
   # obs. used (total)      251  
   data-arc span      8204 days (22.46 yr)  
   first obs. used      1997-01-03  
   last obs. used      2019-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 23:03:28  

Additional Information
 Earth MOID = 1.37568 au 
 Jupiter MOID = 2.23659 au 
 T_jup = 3.356 
[ 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 16.2   n/a MPO476591  
rotation period rot_per 6.049 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

344450 (2002 JJ120)          Discovered 2002-May-05 by NEAT at Palomar
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

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