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59057 (1998 UO18)
Classification: Main-belt Asteroid          SPK-ID: 2059057
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2197129142599041 4.727e-08  
a 2.369567255402475 8.3277e-09 au
q 1.848942728183154 1.1314e-07 au
i 2.236999207925101 5.1282e-06 deg
node 2.002694392752042 8.6907e-05 deg
peri 13.42144651279071 8.7398e-05 deg
M 355.4592932505123 8.251e-06 deg
tp 2459017.304397295636
(2020-Jun-16.80439730)
3.0565e-05 TDB
period 1332.299873166567
3.65
7.0235e-06
1.923e-08
d
yr
n .270209438018157 1.4245e-09 deg/d
Q 2.890191782621795 1.0157e-08 au
  Orbit Determination Parameters
   # obs. used (total)      828  
   data-arc span      9139 days (25.02 yr)  
   first obs. used      1994-08-12  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6004  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:27:50  

Additional Information
 Earth MOID = .850159 au 
 Jupiter MOID = 2.57559 au 
 T_jup = 3.512 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456634.5 (2013-Dec-08.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2208809309327207 4.7305e-08  
q 1.846805767537608 1.1345e-07 au
tp 2456353.399288414366
(2013-Mar-01.89928841)
2.8667e-05 TDB
node 2.15084826581247 8.6805e-05 deg
peri 13.49351608806712 8.7287e-05 deg
i 2.239116468467055 5.1298e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      828  
   data-arc span      9139 days (25.02 yr)  
   first obs. used      1994-08-12  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6004  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:27:50  

Additional Information
 Jupiter MOID = 2.57559 au 
 T_jup = 3.512 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.237740123543003E-15 -5.357872353338638E-15 -3.52684543198088E-13 1.336401837006522E-14 -1.342670605261722E-13 -1.357968306816656E-15
q -5.357872353338638E-15 1.287009455693046E-14 8.073344302580628E-13 -3.27995028811224E-14 3.133270033049382E-13 3.30540068144877E-15
tp -3.52684543198088E-13 8.073344302580628E-13 8.218232781587922E-10 -6.931062441834999E-12 2.694845456765383E-10 1.302437761106265E-13
node 1.336401837006522E-14 -3.27995028811224E-14 -6.931062441834999E-12 7.535102171416369E-9 -7.530716278605942E-9 -9.641745345250602E-13
peri -1.342670605261722E-13 3.133270033049382E-13 2.694845456765383E-10 -7.530716278605942E-9 7.619053043870108E-9 9.979856110170604E-13
i -1.357968306816656E-15 3.30540068144877E-15 1.302437761106265E-13 -9.641745345250602E-13 9.979856110170604E-13 2.631517581047869E-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 15.6   n/a MPO436195  
rotation period rot_per 5.398 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.]

59057 (1998 UO18)          Discovered 1998-Oct-25 by Kobayashi, T. at Oizumi
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 UO18 = 1994 PB28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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