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100341 (1995 ST44)
Classification: Mars-crossing Asteroid          SPK-ID: 2100341
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3077806886213708 5.1231e-08  
a 2.35484812803863 8.4272e-09 au
q 1.630071349592154 1.229e-07 au
i 3.989497081379267 5.9229e-06 deg
node 193.1596122236984 5.8842e-05 deg
peri 175.561756948284 5.9224e-05 deg
M 353.3042526928734 8.3802e-06 deg
tp 2459225.049312616759
(2021-Jan-10.54931262)
3.0822e-05 TDB
period 1319.905327464597
3.61
7.0852e-06
1.94e-08
d
yr
n .2727468345714787 1.4641e-09 deg/d
Q 3.079624906485105 1.1021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      495  
   data-arc span      9275 days (25.39 yr)  
   first obs. used      1995-09-20  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55892  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:31:44  

Additional Information
 Earth MOID = .627934 au 
 Jupiter MOID = 2.38652 au 
 T_jup = 3.487 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456802.5 (2014-May-25.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3067691907230127 5.101e-08  
q 1.633264915072323 1.2219e-07 au
tp 2456585.797947722539
(2013-Oct-20.29794772)
2.315e-05 TDB
node 193.3021643964444 5.8973e-05 deg
peri 175.6202145159025 5.936e-05 deg
i 3.982844443538512 5.9159e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      495  
   data-arc span      9275 days (25.39 yr)  
   first obs. used      1995-09-20  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55892  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:31:44  

Additional Information
 Jupiter MOID = 2.38652 au 
 T_jup = 3.487 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.602017941405711E-15 -6.22679318774554E-15 -2.852208352097329E-13 -8.897800391986664E-15 -4.845026743225996E-14 -2.429937214418871E-15
q -6.22679318774554E-15 1.492997291271376E-14 7.164358444689645E-13 2.085561804412969E-14 1.232127605956801E-13 5.801288535968476E-15
tp -2.852208352097329E-13 7.164358444689645E-13 5.359097614005974E-10 2.634732968266936E-12 1.656185418852133E-10 1.688567188401627E-13
node -8.897800391986664E-15 2.085561804412969E-14 2.634732968266936E-12 3.477818733327433E-9 -3.467842423367899E-9 -3.245028622526566E-11
peri -4.845026743225996E-14 1.232127605956801E-13 1.656185418852133E-10 -3.467842423367899E-9 3.523664518329043E-9 3.237864349917015E-11
i -2.429937214418871E-15 5.801288535968476E-15 1.688567188401627E-13 -3.245028622526566E-11 3.237864349917015E-11 3.499790101058668E-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 16.18   n/a MPCxxxxx  

100341 (1995 ST44)          Discovered 1995-Sep-25 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1995 ST44 = 2000 AM122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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