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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 
[ show covariance matrix ]

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

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