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226121 (2002 QG4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2226121
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1029821406190415 5.8911e-08  
a 3.211281467301879 4.7808e-08 au
q 2.880576827668875 1.8308e-07 au
i 5.061494376795536 7.9555e-06 deg
node 312.1385714807822 7.3373e-05 deg
peri 87.68168118125591 8.3612e-05 deg
M 330.8695403210252 4.1085e-05 deg
tp 2459170.582967040446
(2020-Nov-17.08296704)
0.00024106 TDB
period 2101.919050002277
5.75
4.6938e-05
1.285e-07
d
yr
n .1712720573133442 3.8247e-09 deg/d
Q 3.541986106934882 5.2731e-08 au
  Orbit Determination Parameters
   # obs. used (total)      234  
   data-arc span      8852 days (24.24 yr)  
   first obs. used      1994-03-17  
   last obs. used      2018-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55506  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 08:45:23  

Additional Information
 Earth MOID = 1.89429 au 
 Jupiter MOID = 1.86574 au 
 T_jup = 3.177 
[ 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 15.5   n/a MPO454623  
diameter diameter 3.749 km 0.848 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.087   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226121 (2002 QG4)          Discovered 2002-Aug-16 by NEAT at Haleakala
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2002 QG4 = 2003 WE72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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