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117879 (2621 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117879
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1383820730608701 5.9727e-08  
a 2.282860989322873 1.0524e-08 au
q 1.966953953110585 1.3785e-07 au
i 7.617538192541879 6.0351e-06 deg
node 18.62918253656937 3.8806e-05 deg
peri 303.9477962275776 4.2371e-05 deg
M 144.1974322782022 1.6251e-05 deg
tp 2458495.870479163330
(2019-Jan-12.37047916)
5.6509e-05 TDB
period 1259.846480141956
3.45
8.7123e-06
2.385e-08
d
yr
n .2857491017155013 1.976e-09 deg/d
Q 2.598768025535161 1.1981e-08 au
  Orbit Determination Parameters
   # obs. used (total)      443  
   data-arc span      21670 days (59.33 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57177  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:51:21  

Additional Information
 Earth MOID = .967233 au 
 Jupiter MOID = 2.72595 au 
 T_jup = 3.580 
[ 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 16.4   n/a MPO348192  

117879 (2621 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
 2621 P-L = 1998 SM161 = 1998 TW36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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