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213521 (2002 GH157)
Classification: Main-belt Asteroid          SPK-ID: 2213521
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1366879573556652 3.3489e-08  
a 2.255922457191387 9.1519e-09 au
q 1.947565024565123 7.5297e-08 au
i 6.057619239272937 4.1358e-06 deg
node 140.0784286810468 5.0359e-05 deg
peri 166.1968161666601 5.5203e-05 deg
M 96.09060273722338 2.4958e-05 deg
tp 2458870.158531553406
(2020-Jan-21.65853155)
8.4858e-05 TDB
period 1237.612474614084
3.39
7.5312e-06
2.062e-08
d
yr
n .2908826529986749 1.7701e-09 deg/d
Q 2.564279889817651 1.0403e-08 au
  Orbit Determination Parameters
   # obs. used (total)      381  
   data-arc span      6877 days (18.83 yr)  
   first obs. used      2002-04-11  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:43:01  

Additional Information
 Earth MOID = .931356 au 
 Jupiter MOID = 2.66072 au 
 T_jup = 3.604 
[ 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 16.94   n/a MPCxxxxx  

213521 (2002 GH157)          Discovered 2002-Apr-13 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 2002 GH157 = 2003 UN172 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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