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181909 (1999 TX15)
Classification: Outer Main-belt Asteroid          SPK-ID: 2181909
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09441232506184877 7.4602e-08  
a 3.216143593539424 3.9561e-08 au
q 2.912499999140598 2.534e-07 au
i 1.439061982283113 8.063e-06 deg
node 15.78112664998235 0.00021123 deg
peri 355.1281324294893 0.00021393 deg
M 284.1284185703529 3.9798e-05 deg
tp 2459840.495132147647
(2022-Sep-17.99513215)
0.00023854 TDB
period 2106.694556266298
5.77
3.8871e-05
1.064e-07
d
yr
n .1708838136640127 3.153e-09 deg/d
Q 3.519787187938251 4.3296e-08 au
  Orbit Determination Parameters
   # obs. used (total)      213  
   data-arc span      7560 days (20.70 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60092  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:33  

Additional Information
 Earth MOID = 1.91139 au 
 Jupiter MOID = 1.94551 au 
 T_jup = 3.183 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457211.5 (2015-Jul-08.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0940370035254068 7.4331e-08  
q 2.913146423440881 2.516e-07 au
tp 2457742.900438246761
(2016-Dec-20.40043825)
0.00021456 TDB
node 15.82139159543562 0.00021121 deg
peri 356.4737973946135 0.00021395 deg
i 1.439312667369935 8.0628e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      213  
   data-arc span      7560 days (20.70 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60092  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:33  

Additional Information
 Jupiter MOID = 1.94551 au 
 T_jup = 3.183 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.525087655344941E-15 -1.851958311586983E-14 -2.624525660170793E-12 -3.032499860906642E-14 -3.350510128252384E-13 1.438087949109806E-16
q -1.851958311586983E-14 6.330352932003141E-14 1.308477001383876E-11 9.131888494620968E-14 1.76747877719099E-12 -5.428396290918952E-17
tp -2.624525660170793E-12 1.308477001383876E-11 4.60350248747157E-8 -1.706198412856123E-11 7.342018376837546E-9 -2.384193274012139E-13
node -3.032499860906642E-14 9.131888494620968E-14 -1.706198412856123E-11 4.460956942164415E-8 -4.459775163206441E-8 -1.169343717277176E-11
peri -3.350510128252384E-13 1.76747877719099E-12 7.342018376837546E-9 -4.459775163206441E-8 4.577537726622258E-8 1.16474182507044E-11
i 1.438087949109806E-16 -5.428396290918952E-17 -2.384193274012139E-13 -1.169343717277176E-11 1.16474182507044E-11 6.500954033606938E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.88   n/a E2021B55  
diameter diameter 3.796 km 0.545 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181909 (1999 TX15)          Discovered 1999-Oct-12 by Pravec, P., Kusnirak, P. at Ondrejov
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1999 TX15 = 2005 VJ58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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