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74071 (1998 MH9)
Classification: Main-belt Asteroid          SPK-ID: 2074071
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1748394646267285 2.8069e-08  
a 2.394678857906693 7.6316e-09 au
q 1.975994488437341 6.9003e-08 au
i 5.378297529113184 4.3522e-06 deg
node 166.214555328695 3.4872e-05 deg
peri 95.19443962394411 3.7385e-05 deg
M 332.3364756910307 1.2494e-05 deg
tp 2459104.509822214058
(2020-Sep-12.00982221)
4.7039e-05 TDB
period 1353.534552534238
3.71
6.4704e-06
1.771e-08
d
yr
n .2659703066508114 1.2714e-09 deg/d
Q 2.813363227376045 8.9659e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1004  
   data-arc span      8056 days (22.06 yr)  
   first obs. used      1998-05-23  
   last obs. used      2020-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56117  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:48:13  

Additional Information
 Earth MOID = .96953 au 
 Jupiter MOID = 2.27123 au 
 T_jup = 3.503 
[ 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 15.6   n/a MPO319934  

74071 (1998 MH9)          Discovered 1998-Jun-19 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 MH9 = 2001 DD105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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