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190399 (1999 TQ144)
Classification: Main-belt Asteroid          SPK-ID: 2190399
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2064912252822828 4.931e-08  
a 2.769330814552565 2.1345e-08 au
q 2.197488301443624 1.3654e-07 au
i 7.380217011179244 5.5857e-06 deg
node 185.9066315381488 4.2123e-05 deg
peri 108.8941687442398 4.4055e-05 deg
M 267.7065812680796 1.6855e-05 deg
tp 2459632.047809719973
(2022-Feb-21.54780972)
8.1487e-05 TDB
period 1683.296746764226
4.61
1.9461e-05
5.328e-08
d
yr
n .2138660344303653 2.4726e-09 deg/d
Q 3.341173327661506 2.5753e-08 au
  Orbit Determination Parameters
   # obs. used (total)      520  
   data-arc span      8343 days (22.84 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46871  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:07:29  

Additional Information
 Earth MOID = 1.19344 au 
 Jupiter MOID = 1.9383 au 
 T_jup = 3.295 
[ 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 15.51   n/a E2021B55  
diameter diameter 5.469 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

190399 (1999 TQ144)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ show close-approach data ]
Alternate Designations
 1999 TQ144 = 1998 HW66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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