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152812 (1999 TC244)
Classification: Main-belt Asteroid          SPK-ID: 2152812
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1429155042293538 5.8494e-08  
a 3.052300702518421 2.3862e-08 au
q 2.61607960855839 1.8567e-07 au
i 15.56301769704505 6.1418e-06 deg
node 11.71466864173478 1.3768e-05 deg
peri 348.7351936440999 2.0073e-05 deg
M 358.3924534721817 1.3165e-05 deg
tp 2459209.197620468987
(2020-Dec-25.69762047)
7.1247e-05 TDB
period 1947.777756134164
5.33
2.2841e-05
6.254e-08
d
yr
n .1848260146036923 2.1674e-09 deg/d
Q 3.488521796478452 2.7273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      542  
   data-arc span      7780 days (21.30 yr)  
   first obs. used      1999-08-22  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5228  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:28:46  

Additional Information
 Earth MOID = 1.61401 au 
 Jupiter MOID = 1.97344 au 
 T_jup = 3.165 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457503.5 (2016-Apr-25.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1463323466941402 5.8214e-08  
q 2.60411853982354 1.8554e-07 au
tp 2457263.737301409212
(2015-Aug-29.23730141)
6.8005e-05 TDB
node 11.91060393864571 1.3754e-05 deg
peri 348.9637117560711 1.9744e-05 deg
i 15.58833227226286 6.1451e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      542  
   data-arc span      7780 days (21.30 yr)  
   first obs. used      1999-08-22  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5228  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:28:46  

Additional Information
 Jupiter MOID = 1.97344 au 
 T_jup = 3.165 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.388888043465084E-15 -1.074238337555085E-14 -6.407832284123613E-13 3.087582953991926E-15 -1.874460038083505E-13 -5.190231384375678E-16
q -1.074238337555085E-14 3.442547563157834E-14 1.770309107029223E-12 -1.072266334113984E-14 5.524949912280194E-13 2.751885339423657E-15
tp -6.407832284123613E-13 1.770309107029223E-12 4.624673556993338E-9 5.038864898628086E-13 9.720166505028024E-10 -3.971583162952877E-12
node 3.087582953991926E-15 -1.072266334113984E-14 5.038864898628086E-13 1.891808628751286E-10 -1.817429646259027E-10 -2.471010688868372E-11
peri -1.874460038083505E-13 5.524949912280194E-13 9.720166505028024E-10 -1.817429646259027E-10 3.898102350186111E-10 2.295383595193545E-11
i -5.190231384375678E-16 2.751885339423657E-15 -3.971583162952877E-12 -2.471010688868372E-11 2.295383595193545E-11 3.776164647746342E-11

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 15.00   n/a E2021B55  
diameter diameter 8.018 km 1.231 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.035   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

152812 (1999 TC244)          Discovered 1999-Oct-07 by CSS at Catalina
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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Alternate Designations
 1999 TC244 = 1999 TL228 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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