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249640 (1999 TW168)
Classification: Main-belt Asteroid          SPK-ID: 2249640
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1408391189935411 4.6787e-08  
a 3.17093888562862 2.8549e-08 au
q 2.724346646594324 1.493e-07 au
i 4.424637676572218 5.2582e-06 deg
node 235.2267684263732 6.4009e-05 deg
peri 165.0313335340064 6.6561e-05 deg
M 223.5452614142126 2.0856e-05 deg
tp 2459782.247238193100
(2022-Jul-21.74723819)
0.00012633 TDB
period 2062.434831257876
5.65
2.7853e-05
7.626e-08
d
yr
n .1745509698264922 2.3573e-09 deg/d
Q 3.617531124662916 3.2569e-08 au
  Orbit Determination Parameters
   # obs. used (total)      397  
   data-arc span      7144 days (19.56 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58203  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:25:56  

Additional Information
 Earth MOID = 1.73284 au 
 Jupiter MOID = 1.79001 au 
 T_jup = 3.182 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456932.5 (2014-Oct-02.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1429426293205171 4.6739e-08  
q 2.715429508904351 1.4905e-07 au
tp 2457724.511382395473
(2016-Dec-02.01138240)
0.00010816 TDB
node 235.2521210691839 6.3973e-05 deg
peri 165.5531792647566 6.6453e-05 deg
i 4.42728217644461 5.2621e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      397  
   data-arc span      7144 days (19.56 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58203  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:25:56  

Additional Information
 Jupiter MOID = 1.79001 au 
 T_jup = 3.182 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.18451363462167E-15 -6.868872998486611E-15 -1.234348170423325E-13 5.203450889317982E-15 -3.154924132489646E-14 -3.547373580478447E-16
q -6.868872998486611E-15 2.221594583991696E-14 1.707996979149602E-12 -1.538207732361442E-14 2.73422330069543E-13 1.14893614882261E-15
tp -1.234348170423325E-13 1.707996979149602E-12 1.16995188185737E-8 -7.626195664001676E-12 1.96702855307849E-9 7.849566282510175E-13
node 5.203450889317982E-15 -1.538207732361442E-14 -7.626195664001676E-12 4.092550018538843E-9 -4.081310122679209E-9 -2.506942562499186E-11
peri -3.154924132489646E-14 2.73422330069543E-13 1.96702855307849E-9 -4.081310122679209E-9 4.415947208494075E-9 2.511750830521167E-11
i -3.547373580478447E-16 1.14893614882261E-15 7.849566282510175E-13 -2.506942562499186E-11 2.511750830521167E-11 2.768918584741738E-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 15.4   n/a MPO437159  

249640 (1999 TW168)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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