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46258 (2001 HE45)
Classification: Main-belt Asteroid          SPK-ID: 2046258
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1621563930603443 4.0893e-08  
a 2.313833052944866 8.0302e-09 au
q 1.938630230935522 9.6133e-08 au
i 3.883858254697407 4.7737e-06 deg
node 306.40871176 5.4212e-05 deg
peri 60.53031106663693 5.5697e-05 deg
M 358.8905173060157 1.3474e-05 deg
tp 2459004.462000166482
(2020-Jun-03.96200017)
4.8124e-05 TDB
period 1285.572156886544
3.52
6.6924e-06
1.832e-08
d
yr
n .2800309559222752 1.4578e-09 deg/d
Q 2.68903587495421 9.3324e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1277  
   data-arc span      14253 days (39.02 yr)  
   first obs. used      1981-10-23  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49692  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:48:07  

Additional Information
 Earth MOID = .94052 au 
 Jupiter MOID = 2.78482 au 
 T_jup = 3.562 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456735.5 (2014-Mar-19.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1624589884932874 4.0743e-08  
q 1.938899459392412 9.5774e-08 au
tp 2456433.535685464342
(2013-May-21.03568546)
4.4439e-05 TDB
node 306.49380250848 5.4243e-05 deg
peri 60.69716726163529 5.572e-05 deg
i 3.882335554172882 4.7711e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1277  
   data-arc span      14253 days (39.02 yr)  
   first obs. used      1981-10-23  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49692  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:48:07  

Additional Information
 Jupiter MOID = 2.78482 au 
 T_jup = 3.562 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.65998751821448E-15 -3.892830809833025E-15 -7.158081905124664E-13 9.241678376742356E-15 -2.161366045647138E-13 -2.777756367100714E-16
q -3.892830809833025E-15 9.172641087468106E-15 1.689585491404676E-12 -2.202077127736603E-14 5.122567479301604E-13 6.489821523787235E-16
tp -7.158081905124664E-13 1.689585491404676E-12 1.9748472392016E-9 -8.590966494080494E-12 5.758708071558593E-10 4.352371953370612E-13
node 9.241678376742356E-15 -2.202077127736603E-14 -8.590966494080494E-12 2.942294331739196E-9 -2.937811266071506E-9 7.106019799904684E-11
peri -2.161366045647138E-13 5.122567479301604E-13 5.758708071558593E-10 -2.937811266071506E-9 3.104674191725866E-9 -7.0794649036193E-11
i -2.777756367100714E-16 6.489821523787235E-16 4.352371953370612E-13 7.106019799904684E-11 -7.0794649036193E-11 2.276293781292367E-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 14.9   n/a MPO337628  

46258 (2001 HE45)          Discovered 2001-Apr-16 by LONEOS at Anderson Mesa
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

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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
2085-Mar-12 13:56 < 00:01 Juno 0.0194369552742611 0.019435842750743 0.0194380705649144 5.95509552801764 5.95509542291128 2482662.080864319 0.560847745008564 473.524307088796 34.9283856599163 -84.756981990888 82862.1599315314 T 21 CATAB v2.0f-lin.ifort 2020-Nov-12 23:48:10 2020-Nov-12 23:48

Alternate Designations
 2001 HE45 = 1981 UY13 = 2000 AT17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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