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JPL Small-Body Database Browser
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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 
[ 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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1972-Feb-25 22:19 00:02 Thisb 0.049993509691791 0.0499919945823139 0.0499950250706905 3.25878302625865 3.25878298440766 2441373.429557324 2.2890240351041 244.684283543027 46.6968424044615 75.6932028438798 155244.685929383 T 21 CATAB v2.0f-lin.ifort 2019-Sep-24 02:27:54 2019-Sep-24 02:27
2185-Sep-08 10:37 00:02 Hebe 0.048233297555179 0.0482157540157372 0.0482508475681046 4.94907606420943 4.9490760381667 2519365.942479109 2.19673396323135 1241.71369267536 32.8734595452485 -45.2413643779669 155846.67272847 T 21 CATAB v2.0f-lin.ifort 2019-Sep-24 02:27:54 2019-Sep-24 02:27

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