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134396 (1997 HM9)
Classification: Main-belt Asteroid          SPK-ID: 2134396
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 .2154189512912182 4.6955e-08  
a 2.577081180593047 1.2963e-08 au
q 2.021929055277359 1.2007e-07 au
i 3.983236316396669 4.0604e-06 deg
node 32.14350318053397 8.5107e-05 deg
peri 231.1618385185885 8.5893e-05 deg
M 227.6484790899654 1.3816e-05 deg
tp 2459756.042145394498
(2022-Jun-25.54214539)
6.0114e-05 TDB
period 1511.090850840809
4.14
1.1401e-05
3.121e-08
d
yr
n .2382384883077592 1.7975e-09 deg/d
Q 3.132233305908736 1.5755e-08 au
  Orbit Determination Parameters
   # obs. used (total)      455  
   data-arc span      8711 days (23.85 yr)  
   first obs. used      1997-04-06  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62312  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:08:11  

Additional Information
 Earth MOID = 1.00759 au 
 Jupiter MOID = 1.96142 au 
 T_jup = 3.390 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457175.5 (2015-Jun-02.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2159346351951203 4.6855e-08  
q 2.019750060587075 1.1985e-07 au
tp 2456735.662418773880
(2014-Mar-19.16241877)
5.1721e-05 TDB
node 32.15953185385954 8.5064e-05 deg
peri 231.2640514249398 8.5848e-05 deg
i 3.985450859028434 4.0621e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      455  
   data-arc span      8711 days (23.85 yr)  
   first obs. used      1997-04-06  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62312  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:08:11  

Additional Information
 Jupiter MOID = 1.96142 au 
 T_jup = 3.390 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.195425925168228E-15 -5.595682218296951E-15 1.198383970568136E-12 1.185531815787105E-14 2.344104198026483E-13 -3.678177996344612E-15
q -5.595682218296951E-15 1.436306163149293E-14 -3.000411690987767E-12 -3.167426634325324E-14 -5.788359327379322E-13 9.473372965771368E-15
tp 1.198383970568136E-12 -3.000411690987767E-12 2.675032968386798E-9 1.38717130367163E-11 6.427160471833303E-10 -4.28378804640711E-12
node 1.185531815787105E-14 -3.167426634325324E-14 1.38717130367163E-11 7.235882567852506E-9 -7.215726591347747E-9 -4.331627626570092E-11
peri 2.344104198026483E-13 -5.788359327379322E-13 6.427160471833303E-10 -7.215726591347747E-9 7.369823353851432E-9 4.225115357838888E-11
i -3.678177996344612E-15 9.473372965771368E-15 -4.28378804640711E-12 -4.331627626570092E-11 4.225115357838888E-11 1.65005946781588E-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 16.04   n/a MPCxxxxx  

134396 (1997 HM9)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

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Alternate Designations
 1997 HM9 = 2001 FE161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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