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185778 (1999 TL291)
Classification: Main-belt Asteroid          SPK-ID: 2185778
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1774350528874689 5.5698e-08  
a 3.188870376111643 3.6177e-08 au
q 2.623052992274991 1.7969e-07 au
i 6.857414350330458 6.1531e-06 deg
node 95.85685111128133 4.9994e-05 deg
peri 274.6807777013336 5.3199e-05 deg
M 248.1164072468604 2.2069e-05 deg
tp 2459646.924233201015
(2022-Mar-08.42423320)
0.00013502 TDB
period 2079.95397918463
5.69
3.5395e-05
9.691e-08
d
yr
n .1730807525564219 2.9453e-09 deg/d
Q 3.754687759948296 4.2596e-08 au
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      7149 days (19.57 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57165  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:53:03  

Additional Information
 Earth MOID = 1.63435 au 
 Jupiter MOID = 1.76315 au 
 T_jup = 3.162 
[ 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 MPO470003  
diameter diameter 5.128 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

185778 (1999 TL291)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 1999 TL291 = 2004 QD2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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