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181458 (2006 TH44)
Classification: Main-belt Asteroid          SPK-ID: 2181458
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1278445485344935 3.9575e-08  
a 2.249777556447733 1.0096e-08 au
q 1.962155760440636 8.8553e-08 au
i 2.503496321431506 4.4943e-06 deg
node 217.7241682260801 7.7831e-05 deg
peri 9.91353992261484 7.9122e-05 deg
M 303.6339702188621 1.6025e-05 deg
tp 2459589.484639003228
(2022-Jan-09.98463900)
5.5588e-05 TDB
period 1232.559226025367
3.37
8.2967e-06
2.272e-08
d
yr
n .2920752142360669 1.966e-09 deg/d
Q 2.537399352454829 1.1387e-08 au
  Orbit Determination Parameters
   # obs. used (total)      616  
   data-arc span      8417 days (23.04 yr)  
   first obs. used      1998-04-22  
   last obs. used      2021-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52047  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:38:16  

Additional Information
 Earth MOID = .95282 au 
 Jupiter MOID = 2.44179 au 
 T_jup = 3.616 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457612.5 (2016-Aug-12.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1279829282211144 3.9606e-08  
q 1.961796406488273 8.8637e-08 au
tp 2457125.258897773640
(2015-Apr-12.75889777)
4.8178e-05 TDB
node 217.7408128482274 7.7809e-05 deg
peri 10.07387922338661 7.9097e-05 deg
i 2.503595023013903 4.4956e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      616  
   data-arc span      8417 days (23.04 yr)  
   first obs. used      1998-04-22  
   last obs. used      2021-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52047  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:38:16  

Additional Information
 Jupiter MOID = 2.44179 au 
 T_jup = 3.616 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.568653525177332E-15 -3.493517692268189E-15 -8.814692945146664E-14 1.215394664639375E-14 -4.208835181214115E-14 -7.192436834073558E-17
q -3.493517692268189E-15 7.856494920837492E-15 3.267344848255258E-13 -2.708523673526481E-14 1.36831022333472E-13 2.628514091483786E-16
tp -8.814692945146664E-14 3.267344848255258E-13 2.321084536801501E-9 -4.339095603127746E-12 6.919884673623416E-10 4.415464050699959E-13
node 1.215394664639375E-14 -2.708523673526481E-14 -4.339095603127746E-12 6.054171503099522E-9 -6.049394512726132E-9 -4.365748659025269E-13
peri -4.208835181214115E-14 1.36831022333472E-13 6.919884673623416E-10 -6.049394512726132E-9 6.256306928046235E-9 5.768674620852457E-13
i -7.192436834073558E-17 2.628514091483786E-16 4.415464050699959E-13 -4.365748659025269E-13 5.768674620852457E-13 2.021054230136866E-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 16.82   n/a MPCxxxxx  
rotation period rot_per 2.92 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

181458 (2006 TH44)          Discovered 2006-Oct-12 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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