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190436 (1999 XT181)
Classification: Main-belt Asteroid          SPK-ID: 2190436
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2995453870140401 3.2816e-08  
a 2.766309576483264 1.5754e-08 au
q 1.937674303794939 9.1926e-08 au
i 7.236711799288859 5.0048e-06 deg
node 312.8001305589547 3.582e-05 deg
peri 123.7624644605098 3.7094e-05 deg
M 200.1239069682569 1.0962e-05 deg
tp 2459946.829525490785
(2023-Jan-02.32952549)
5.581e-05 TDB
period 1680.542875934158
4.60
1.4356e-05
3.93e-08
d
yr
n .2142164922747883 1.8299e-09 deg/d
Q 3.594944849171589 2.0473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      552  
   data-arc span      7549 days (20.67 yr)  
   first obs. used      1999-10-14  
   last obs. used      2020-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54066  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:07:39  

Additional Information
 Earth MOID = .963552 au 
 Jupiter MOID = 1.73941 au 
 T_jup = 3.261 
[ 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 15.35   n/a E2021B55  
diameter diameter 3.927 km 0.809 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.104   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

190436 (1999 XT181)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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