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181943 (1999 TT179)
Classification: Main-belt Asteroid          SPK-ID: 2181943
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07693896660660847 3.9218e-08  
a 3.067560117943759 2.5851e-08 au
q 2.83154521246552 1.2603e-07 au
i 11.36761258804927 4.9414e-06 deg
node 215.341673054952 2.3247e-05 deg
peri 83.77484809818796 5.9215e-05 deg
M 49.62227970460411 4.9091e-05 deg
tp 2458930.003118463744
(2020-Mar-21.50311846)
0.00026894 TDB
period 1962.402330822722
5.37
2.4806e-05
6.792e-08
d
yr
n .1834486202679309 2.3189e-09 deg/d
Q 3.303575023421998 2.784e-08 au
  Orbit Determination Parameters
   # obs. used (total)      486  
   data-arc span      7728 days (21.16 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-12-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:41  

Additional Information
 Earth MOID = 1.84399 au 
 Jupiter MOID = 1.86668 au 
 T_jup = 3.197 
[ 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 15.36   n/a E2021B55  
diameter diameter 4.370 km 0.793 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.084   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

181943 (1999 TT179)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1999 TT179 = 2003 JG16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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