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117897 (2845 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117897
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1294316332872456 5.7944e-08  
a 3.113667717274288 3.3932e-08 au
q 2.710660619113707 1.8083e-07 au
i 2.790201683185159 6.6871e-06 deg
node 29.85643367408051 0.00013559 deg
peri 3.662669450096994 0.00013807 deg
M 301.6035077131205 2.5754e-05 deg
tp 2459326.030048569320
(2021-Apr-21.53004857)
0.00014454 TDB
period 2006.812616573641
5.49
3.2805e-05
8.982e-08
d
yr
n .1793889459468572 2.9324e-09 deg/d
Q 3.516674815434869 3.8324e-08 au
  Orbit Determination Parameters
   # obs. used (total)      311  
   data-arc span      21030 days (57.58 yr)  
   first obs. used      1960-09-24  
   last obs. used      2018-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57966  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 05:24:14  

Additional Information
 Earth MOID = 1.71691 au 
 Jupiter MOID = 1.91537 au 
 T_jup = 3.203 
[ 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 MPO449689  

117897 (2845 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2845 P-L = 2004 TH175 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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