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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 ]

[ 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 .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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456764.5 (2014-Apr-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1390782270824165 5.9778e-08  
q 1.964698986472106 1.3801e-07 au
tp 2457236.672116345132
(2015-Aug-02.17211635)
5.6114e-05 TDB
node 18.65755717036724 3.8776e-05 deg
peri 304.0452931726741 4.2302e-05 deg
i 7.622302865211505 6.0391e-06 deg
  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
 Jupiter MOID = 2.72595 au 
 T_jup = 3.580 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.573426061112834E-15 -8.232641176977902E-15 8.896791273518075E-13 -1.356214240975312E-14 2.349389499465033E-13 -1.518978249858389E-14
q -8.232641176977902E-15 1.904721766364909E-14 -2.075822383036865E-12 3.033280936477644E-14 -5.593284258536623E-13 3.545000225651101E-14
tp 8.896791273518075E-13 -2.075822383036865E-12 3.148782228530594E-9 1.21361946758116E-11 9.700738390515136E-10 -8.239266877998549E-12
node -1.356214240975312E-14 3.033280936477644E-14 1.21361946758116E-11 1.503612547380413E-9 -1.485576722826662E-9 -1.026073282902832E-10
peri 2.349389499465033E-13 -5.593284258536623E-13 9.700738390515136E-10 -1.485576722826662E-9 1.789442738122151E-9 9.93933558207164E-11
i -1.518978249858389E-14 3.545000225651101E-14 -8.239266877998549E-12 -1.026073282902832E-10 9.93933558207164E-11 3.647082820236228E-11

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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