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249942 (2001 TB168)
Classification: Main-belt Asteroid          SPK-ID: 2249942
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1708413047474475 5.1555e-08  
a 2.761645901797955 1.6946e-08 au
q 2.289842712684351 1.4583e-07 au
i 24.60189544863389 4.8661e-06 deg
node 244.9361514678508 1.4124e-05 deg
peri 213.5058882836139 2.6305e-05 deg
M 340.7427886290469 2.1641e-05 deg
tp 2459090.168790602954
(2020-Aug-28.66879060)
0.00010115 TDB
period 1676.294869243356
4.59
1.5429e-05
4.224e-08
d
yr
n .2147593520718085 1.9767e-09 deg/d
Q 3.233449090911559 1.9841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      6946 days (19.02 yr)  
   first obs. used      2001-10-15  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47385  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:14:12  

Additional Information
 Earth MOID = 1.33216 au 
 Jupiter MOID = 2.13753 au 
 T_jup = 3.189 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457850.5 (2017-Apr-07.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1694397991643864 5.1846e-08  
q 2.295443842567384 1.4694e-07 au
tp 2457414.835262115833
(2016-Jan-27.33526212)
9.6374e-05 TDB
node 244.9415645757289 1.4132e-05 deg
peri 213.7935751771788 2.648e-05 deg
i 24.58364148604948 4.8668e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      6946 days (19.02 yr)  
   first obs. used      2001-10-15  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47385  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:14:12  

Additional Information
 Jupiter MOID = 2.13753 au 
 T_jup = 3.189 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.687995723333393E-15 -7.585276708471114E-15 3.740574976910128E-13 4.495654109900302E-14 2.685239969186368E-13 -1.035522422111207E-14
q -7.585276708471114E-15 2.159186101718675E-14 -6.342328723045381E-13 -1.244802866828052E-13 -6.524091152906781E-13 3.271131825586872E-14
tp 3.740574976910128E-13 -6.342328723045381E-13 9.287878190265748E-9 1.039608084699811E-11 2.18839653149086E-9 6.002468479460186E-11
node 4.495654109900302E-14 -1.244802866828052E-13 1.039608084699811E-11 1.997080339380539E-10 -1.7492103339661E-10 -3.878137934712778E-11
peri 2.685239969186368E-13 -6.524091152906781E-13 2.18839653149086E-9 -1.7492103339661E-10 7.011993298133856E-10 4.839805524086665E-11
i -1.035522422111207E-14 3.271131825586872E-14 6.002468479460186E-11 -3.878137934712778E-11 4.839805524086665E-11 2.368590373521463E-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 15.0   n/a MPO503177  
diameter diameter 2.971 km 1.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.264   0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249942 (2001 TB168)          Discovered 2001-Oct-15 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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