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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039590585433643 5.6491e-08  
a 2.620512416179162 1.9612e-08 au
q 2.34808641249198 1.4644e-07 au
i 13.83382095040135 5.4365e-06 deg
node 113.2877451298156 2.3092e-05 deg
peri 111.8147009352378 3.5661e-05 deg
M 86.88741069713056 2.5071e-05 deg
tp 2458626.534004471483
(2019-May-23.03400447)
0.00010752 TDB
period 1549.450689232154
4.24
1.7394e-05
4.762e-08
d
yr
n .2323404045716367 2.6083e-09 deg/d
Q 2.892938419866345 2.1651e-08 au
  Orbit Determination Parameters
   # obs. used (total)      257  
   data-arc span      8607 days (23.56 yr)  
   first obs. used      1997-01-03  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54581  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 21:37:43  

Additional Information
 Earth MOID = 1.37568 au 
 Jupiter MOID = 2.23659 au 
 T_jup = 3.356 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457263.5 (2015-Aug-29.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1026924243836705 5.6688e-08  
q 2.351518272227789 1.466e-07 au
tp 2457076.771361655678
(2015-Feb-23.27136166)
0.00010889 TDB
node 113.3212104949791 2.3109e-05 deg
peri 111.8588432229083 3.5902e-05 deg
i 13.82746103323804 5.435e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      257  
   data-arc span      8607 days (23.56 yr)  
   first obs. used      1997-01-03  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54581  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 21:37:43  

Additional Information
 Jupiter MOID = 2.23659 au 
 T_jup = 3.356 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.213572165427744E-15 -8.253347818386656E-15 2.249026748740741E-13 -2.455218433726612E-14 2.255438728028427E-14 -9.522806926099587E-15
q -8.253347818386656E-15 2.149273270471697E-14 -7.493953455547596E-13 6.383378795605119E-14 -9.571367739807545E-14 2.4585629680427E-14
tp 2.249026748740741E-13 -7.493953455547596E-13 1.1856821705771E-8 -1.311035038118607E-11 3.023129412763826E-9 -4.224961413185752E-12
node -2.455218433726612E-14 6.383378795605119E-14 -1.311035038118607E-11 5.340374769886542E-10 -5.213262875854196E-10 -3.112377182089266E-11
peri 2.255438728028427E-14 -9.571367739807545E-14 3.023129412763826E-9 -5.213262875854196E-10 1.288938535971538E-9 2.929846228784724E-11
i -9.522806926099587E-15 2.4585629680427E-14 -4.224961413185752E-12 -3.112377182089266E-11 2.929846228784724E-11 2.953956777452471E-11

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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