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31145 (1997 UK)
Classification: Main-belt Asteroid          SPK-ID: 2031145
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01914090836983628 5.8603e-08  
a 2.467287151874773 1.1574e-08 au
q 2.420061034578664 1.3713e-07 au
i .381455949669925 4.1837e-06 deg
node 218.1110412667623 0.00058012 deg
peri 351.1421842055963 0.00058899 deg
M 107.6352701362069 0.00010031 deg
tp 2458577.266459909115
(2019-Apr-03.76645991)
0.00039531 TDB
period 1415.558991396682
3.88
9.9603e-06
2.727e-08
d
yr
n .2543164941821327 1.7895e-09 deg/d
Q 2.514513269170882 1.1795e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1292  
   data-arc span      9918 days (27.15 yr)  
   first obs. used      1993-09-15  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50923  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:33:51  

Additional Information
 Earth MOID = 1.41287 au 
 Jupiter MOID = 2.44347 au 
 T_jup = 3.486 
[ 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 15.3   n/a MPO474163  

31145 (1997 UK)          Discovered 1997-Oct-19 by Klet at Klet
Reference: 20011130/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
2121-Aug-07 07:09 00:04 Amphi 0.0313455170171694 0.0313353139050257 0.0313557258278568 2.50268001632181 2.50267994304066 2495957.797840028 3.57736431006709 838.38130610039 31.8642829473356 52.7440953189526 117026.593345082 T 25 CATAB v2.0f-lin.ifort 2020-Dec-18 03:33:55 2020-Dec-18 03:33
2174-Nov-29 00:10 00:06 Thisb 0.0447406348798382 0.044729849798314 0.0447514312147747 3.29226667652006 3.29226663023108 2515429.507241961 6.05169286617597 1243.25380580658 38.2598101856751 -64.4240938477627 157682.978584508 T 25 CATAB v2.0f-lin.ifort 2020-Dec-18 03:33:55 2020-Dec-18 03:33

Alternate Designations
 1997 UK = 1993 RL15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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