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46771 (1998 HM7)
Classification: Mars-crossing Asteroid          SPK-ID: 2046771
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2992471823856297 4.2109e-08  
a 2.308157660652185 1.1892e-08 au
q 1.617447984200212 9.7407e-08 au
i 23.55199847466734 5.5877e-06 deg
node 56.47418663163709 1.0819e-05 deg
peri 280.6552658446548 1.4236e-05 deg
M 129.5595353727207 1.3432e-05 deg
tp 2458935.539710706906
(2020-Mar-27.03971071)
4.587e-05 TDB
period 1280.845162558789
3.51
9.8983e-06
2.71e-08
d
yr
n .2810644178729733 2.172e-09 deg/d
Q 2.998867337104158 1.545e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1155  
   data-arc span      13514 days (37.00 yr)  
   first obs. used      1984-05-30  
   last obs. used      2021-05-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47961  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 07:48:36  

Additional Information
 Earth MOID = .776365 au 
 Jupiter MOID = 2.8375 au 
 T_jup = 3.419 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.61   n/a E2021B10  

46771 (1998 HM7)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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