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65985 (1998 HX146)
Classification: Main-belt Asteroid          SPK-ID: 2065985
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442329645855089 4.0788e-08  
a 2.702062962859112 1.3412e-08 au
q 2.312336411229238 1.1109e-07 au
i 11.82152920880601 4.6035e-06 deg
node 104.9196407660937 2.1921e-05 deg
peri 105.3570972069608 2.7587e-05 deg
M 39.05207733897848 1.5605e-05 deg
tp 2459024.511915729690
(2020-Jun-24.01191573)
7.0179e-05 TDB
period 1622.339057340628
4.44
1.2079e-05
3.307e-08
d
yr
n .2219018264838668 1.6521e-09 deg/d
Q 3.091789514488986 1.5346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1107  
   data-arc span      8122 days (22.24 yr)  
   first obs. used      1998-04-23  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54292  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:18:24  

Additional Information
 Earth MOID = 1.33833 au 
 Jupiter MOID = 1.99704 au 
 T_jup = 3.322 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457347.5 (2015-Nov-21.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1447927087282686 4.0687e-08  
q 2.310900135217394 1.1096e-07 au
tp 2457400.012485087878
(2016-Jan-12.51248509)
6.9631e-05 TDB
node 104.9432357445587 2.1924e-05 deg
peri 104.8952050313138 2.7563e-05 deg
i 11.82100692544092 4.6033e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1107  
   data-arc span      8122 days (22.24 yr)  
   first obs. used      1998-04-23  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54292  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:18:24  

Additional Information
 Jupiter MOID = 1.99704 au 
 T_jup = 3.322 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.655454538921285E-15 -4.489989190921328E-15 2.804292811868477E-13 -3.692192451849578E-15 1.016378848420428E-13 -4.542906534525027E-15
q -4.489989190921328E-15 1.23115729549926E-14 -7.984400408212082E-13 1.029069423877115E-14 -2.869632543187631E-13 1.274340365790156E-14
tp 2.804292811868477E-13 -7.984400408212082E-13 4.848539388426017E-9 -8.527879240205395E-12 1.182490959817449E-9 2.390950686017723E-12
node -3.692192451849578E-15 1.029069423877115E-14 -8.527879240205395E-12 4.806802672683309E-10 -4.722827971799941E-10 -6.664685053979278E-12
peri 1.016378848420428E-13 -2.869632543187631E-13 1.182490959817449E-9 -4.722827971799941E-10 7.597007596639304E-10 6.932110783601243E-12
i -4.542906534525027E-15 1.274340365790156E-14 2.390950686017723E-12 -6.664685053979278E-12 6.932110783601243E-12 2.119060286091062E-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 14.74   n/a E2021B10  

65985 (1998 HX146)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2059-Jun-26 15:58 < 00:01 David 0.0276154945214359 0.0276027529491843 0.0276282361150389 4.91186785938865 4.91186774801472 2473271.165082506 0.789323707616583 636.223723167891 75.8707907614925 -3.53356044229571 7293.14419008497 T 24 CATAB v2.0f-lin.ifort 2021-Apr-13 12:18:28 2021-Apr-13 12:18

Alternate Designations
 1998 HX146 = 2002 BY7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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