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181939 (1999 TQ163)
Classification: Main-belt Asteroid          SPK-ID: 2181939
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .184787231661312 4.8294e-08  
a 3.1431618623909 3.2493e-08 au
q 2.562345683176272 1.5755e-07 au
i 5.29249578212962 5.3508e-06 deg
node 71.9164439287507 5.7986e-05 deg
peri 291.9256864642763 5.9957e-05 deg
M 308.8916038143685 1.7923e-05 deg
tp 2459489.460379034355
(2021-Oct-01.96037903)
0.00010458 TDB
period 2035.394264271854
5.57
3.1562e-05
8.641e-08
d
yr
n .1768699098347843 2.7426e-09 deg/d
Q 3.723978041605528 3.8497e-08 au
  Orbit Determination Parameters
   # obs. used (total)      400  
   data-arc span      7176 days (19.65 yr)  
   first obs. used      1999-10-04  
   last obs. used      2019-05-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56584  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:40  

Additional Information
 Earth MOID = 1.56485 au 
 Jupiter MOID = 1.75951 au 
 T_jup = 3.177 
[ 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 15.58   n/a MPCxxxxx  
diameter diameter 3.350 km 1.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.119   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181939 (1999 TQ163)          Discovered 1999-Oct-09 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1999 TQ163 = 2004 PB2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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