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115807 (2003 UJ238)
Classification: Main-belt Asteroid          SPK-ID: 2115807
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117786259582876 4.3569e-08  
a 2.632578049668133 1.1328e-08 au
q 2.322496528137741 1.1545e-07 au
i 1.411358139367266 4.8599e-06 deg
node 39.84296274764127 0.00014635 deg
peri 359.9675474674498 0.00014766 deg
M 55.08653013723963 1.6917e-05 deg
tp 2459157.766575834961
(2020-Nov-04.26657584)
7.3734e-05 TDB
period 1560.164208660407
4.27
1.007e-05
2.757e-08
d
yr
n .2307449421039497 1.4894e-09 deg/d
Q 2.942659571198525 1.2662e-08 au
  Orbit Determination Parameters
   # obs. used (total)      607  
   data-arc span      22056 days (60.39 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51259  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:45:15  

Additional Information
 Earth MOID = 1.32972 au 
 Jupiter MOID = 2.44192 au 
 T_jup = 3.389 
[ 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 16.08   n/a MPCxxxxx  
rotation period rot_per 5.20 h n/a LCDB (Rev. 2020-October); 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.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]

115807 (2003 UJ238)          Discovered 2003-Oct-23 by NEAT at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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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
2083-Sep-10 10:19 < 00:01 Eunom 0.049274586521445 0.0492697453461724 0.0492794281397017 4.06482965547843 4.06482958539287 2482112.930110421 0.819457022510436 337.407095838727 39.4251527608494 -44.755621890865 132419.648676201 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 16:45:17 2021-Apr-13 16:45
2133-May-13 19:25 < 00:01 Juno 0.0498043344132008 0.049798306858858 0.0498103632687109 4.85384208049943 4.85384203017334 2500255.309174217 0.521093102877522 504.522656169298 43.2219015774127 -53.7469156938449 139189.47871569 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 16:45:17 2021-Apr-13 16:45
2197-Jan-14 04:12 00:02 Hebe 0.0432357337708242 0.0432294113888561 0.0432420611517533 4.78953560908582 4.78953557906508 2523511.675327881 1.7555548540911 801.814004043219 34.6324006089029 -66.9736402654761 171831.675232487 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 16:45:17 2021-Apr-13 16:45

Alternate Designations
 2003 UJ238 = 2838 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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