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22653 (1998 QW2)
Classification: Main-belt Asteroid          SPK-ID: 2022653
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .180486769375912 9.7839e-09  
a 2.750065290798868 1.841e-08 au
q 2.253714890889752 2.3436e-08 au
i 45.79663817022412 1.891e-06 deg
node 320.46332624 1.6346e-06 deg
peri 261.533446712053 7.7004e-06 deg
M 45.15589858643408 7.1963e-06 deg
tp 2458991.558397008954
(2020-May-22.05839701)
3.2413e-05 TDB
period 1665.761936567333
4.56
1.6727e-05
4.58e-08
d
yr
n .216117316704846 2.1702e-09 deg/d
Q 3.246415690707984 2.1733e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1067  
   data-arc span      23895 days (65.42 yr)  
   first obs. used      1954-11-27  
   last obs. used      2020-04-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51366  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:08:45  

Additional Information
 Earth MOID = 1.50565 au 
 Jupiter MOID = 2.26307 au 
 T_jup = 2.889 
[ 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 13.55   n/a E2021B10  
diameter diameter 7.457 km 0.172 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.139   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22653 (1998 QW2)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QW2 = 1998 RT20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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