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117871 (2186 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117871
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .1272719171886156 5.0583e-08  
a 2.556576675498906 1.607e-08 au
q 2.231196260568463 1.3248e-07 au
i 12.96053962350329 8.4055e-06 deg
node 358.559687826479 1.52e-05 deg
peri 244.105960658626 3.4995e-05 deg
M 330.1738282719951 2.9938e-05 deg
tp 2459124.203410625174
(2020-Oct-01.70341062)
0.00012418 TDB
period 1493.092316076517
4.09
1.4077e-05
3.854e-08
d
yr
n .2411103426919994 2.2733e-09 deg/d
Q 2.881957090429349 1.8115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      697  
   data-arc span      21765 days (59.59 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54691  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:15:21  

Additional Information
 Earth MOID = 1.25454 au 
 Jupiter MOID = 2.20849 au 
 T_jup = 3.390 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO280570  

117871 (2186 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

Alternate Designations
 2186 P-L = 2001 TP90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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