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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2992416386991052 4.2144e-08  
a 2.307895475012619 1.187e-08 au
q 1.617277051123593 9.747e-08 au
i 23.55400325613784 5.5953e-06 deg
node 56.48081707874073 1.0822e-05 deg
peri 280.6257753440252 1.424e-05 deg
M 74.49866729148758 1.3198e-05 deg
tp 2458935.486112212740
(2020-Mar-26.98611221)
4.5871e-05 TDB
period 1280.626930279529
3.51
9.8802e-06
2.705e-08
d
yr
n .28111231420178 2.1688e-09 deg/d
Q 2.998513898901645 1.5423e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1144  
   data-arc span      13430 days (36.77 yr)  
   first obs. used      1984-05-30  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4817  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:52:17  

Additional Information
 Earth MOID = .77578 au 
 Jupiter MOID = 2.83833 au 
 T_jup = 3.420 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457471.5 (2016-Mar-24.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2994588601513323 4.2108e-08  
q 1.616411673772577 9.7394e-08 au
tp 2457655.810995592370
(2016-Sep-24.31099559)
4.1736e-05 TDB
node 56.48749154161536 1.0819e-05 deg
peri 280.7625159175422 1.4243e-05 deg
i 23.56064520351073 5.597e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1144  
   data-arc span      13430 days (36.77 yr)  
   first obs. used      1984-05-30  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4817  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:52:17  

Additional Information
 Jupiter MOID = 2.83833 au 
 T_jup = 3.420 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.773118461894769E-15 -4.086133699881882E-15 -6.445025731682808E-14 3.714815175841399E-15 3.29076635971929E-14 2.682298652262676E-15
q -4.086133699881882E-15 9.485496998628534E-15 2.583969207129692E-13 -7.89243739541103E-15 -5.394586539424324E-14 -5.416085912344861E-15
tp -6.445025731682808E-14 2.583969207129692E-13 1.74192585767008E-9 7.685154015633176E-12 3.998350036048978E-10 1.903464742546511E-12
node 3.714815175841399E-15 -7.89243739541103E-15 7.685154015633176E-12 1.170455759051207E-10 -1.049834799740073E-10 -8.815157796013274E-12
peri 3.29076635971929E-14 -5.394586539424324E-14 3.998350036048978E-10 -1.049834799740073E-10 2.028603760965887E-10 8.753153760951371E-12
i 2.682298652262676E-15 -5.416085912344861E-15 1.903464742546511E-12 -8.815157796013274E-12 8.753153760951371E-12 3.132643494068045E-11

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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