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78052 (2002 JW138)
Classification: Main-belt Asteroid          SPK-ID: 2078052
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0741005615198034 4.3503e-08  
a 2.714157031367873 1.6194e-08 au
q 2.513036471290591 1.1681e-07 au
i 6.746123942065958 4.7934e-06 deg
node 238.9480025980768 3.8499e-05 deg
peri 178.0895661458721 4.9481e-05 deg
M 188.9311390869698 3.127e-05 deg
tp 2459776.602970767216
(2022-Jul-16.10297077)
0.00014309 TDB
period 1633.243291531827
4.47
1.4618e-05
4.002e-08
d
yr
n .2204203145156373 1.9728e-09 deg/d
Q 2.915277591445155 1.7394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      525  
   data-arc span      10868 days (29.75 yr)  
   first obs. used      1990-10-12  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54399  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:28:26  

Additional Information
 Earth MOID = 1.52496 au 
 Jupiter MOID = 2.36296 au 
 T_jup = 3.348 
[ 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 15.6   n/a MPO436328  
rotation period rot_per 42.026 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.]

78052 (2002 JW138)          Discovered 2002-May-09 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 JW138 = 1997 GV24 = 1999 VZ228 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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