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18654 (1998 FR22)
Classification: Main-belt Asteroid          SPK-ID: 2018654
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1778745196242257 1.7093e-08  
a 2.595270735140944 1.1139e-08 au
q 2.133638199832937 4.6668e-08 au
i 14.34113357099909 7.926e-07 deg
node 169.3423540734094 1.6484e-06 deg
peri 261.9657885675142 7.6465e-06 deg
M 237.5575577493499 8.4806e-06 deg
tp 2459719.899962507012
(2022-May-20.39996251)
3.7721e-05 TDB
period 1527.117419952732
4.18
9.8317e-06
2.692e-08
d
yr
n .2357382577766304 1.5177e-09 deg/d
Q 3.05690327044895 1.312e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1875  
   data-arc span      8777 days (24.03 yr)  
   first obs. used      1996-10-07  
   last obs. used      2020-10-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46697  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:34:18  

Additional Information
 Earth MOID = 1.20102 au 
 Jupiter MOID = 2.38865 au 
 T_jup = 3.352 
[ 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 13.48   n/a E2021B10  
diameter diameter 6.344 km 0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.160   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18654 (1998 FR22)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 FR22 = 1996 TP40 = 2000 OH43 = 2000 QR87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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