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18951 (2000 QQ98)
Classification: Main-belt Asteroid          SPK-ID: 2018951
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2167567522919112 3.2851e-08  
a 2.465565669352623 7.942e-09 au
q 1.931137662301317 7.9885e-08 au
i 3.167968077945731 4.1257e-06 deg
node 104.9819311058526 5.73e-05 deg
peri 320.2504675430638 5.8003e-05 deg
M 35.42849521899949 9.5203e-06 deg
tp 2459061.337092389682
(2020-Jul-30.83709239)
3.7088e-05 TDB
period 1414.077748152505
3.87
6.8325e-06
1.871e-08
d
yr
n .254582890134818 1.2301e-09 deg/d
Q 2.99999367640393 9.6635e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1211  
   data-arc span      18201 days (49.83 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50357  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:40:57  

Additional Information
 Earth MOID = .945477 au 
 Jupiter MOID = 2.31952 au 
 T_jup = 3.452 
[ 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 15.1   n/a MPO449090  
diameter diameter 3.256 km 0.722 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.154   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

18951 (2000 QQ98)          Discovered 2000-Aug-28 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 QQ98 = 1998 EO10 = 2268 T-1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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