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120411 (2857 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2120411
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2417496611806182 7.164e-08  
a 2.544475586926289 1.2086e-08 au
q 1.929349475904504 1.8608e-07 au
i 5.477898318944234 4.2356e-06 deg
node 172.1518088325248 6.7826e-05 deg
peri 91.4062749203013 6.8459e-05 deg
M 31.65601924353502 9.8273e-06 deg
tp 2459070.138406674546
(2020-Aug-08.63840667)		 4.0175e-05 TDB
period 1482.503950863872
4.06		 1.0563e-05
2.892e-08		 d
yr
n .2428324051279754 1.7302e-09 deg/d
Q 3.159601697948074 1.5008e-08 au
   Orbit Determination Parameters
   # obs. used (total)      928  
   data-arc span      21898 days (59.95 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-09-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:37:20  

Additional Information
 Earth MOID = .92169 au 
 Jupiter MOID = 1.95428 au 
 T_jup = 3.396 
[ 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 15.54   n/a E2021B55  

120411 (2857 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 2857 P-L = 2001 XT202 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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