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100879 (1998 HC91)
Classification: Main-belt Asteroid          SPK-ID: 2100879
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1969483223920516 2.895e-08  
a 2.334978124883954 9.5143e-09 au
q 1.875108100365921 6.5593e-08 au
i 3.756911057075296 3.9595e-06 deg
node 120.1283623358544 4.9159e-05 deg
peri 98.34609283650551 5.0254e-05 deg
M 120.7394757336563 1.1757e-05 deg
tp 2458763.411443544058
(2019-Oct-06.91144354)
4.1242e-05 TDB
period 1303.234748768063
3.57
7.9654e-06
2.181e-08
d
yr
n .2762357283216282 1.6884e-09 deg/d
Q 2.794848149401987 1.1388e-08 au
  Orbit Determination Parameters
   # obs. used (total)      511  
   data-arc span      10727 days (29.37 yr)  
   first obs. used      1991-06-06  
   last obs. used      2020-10-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58427  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:11  

Additional Information
 Earth MOID = .870954 au 
 Jupiter MOID = 2.18173 au 
 T_jup = 3.539 
[ 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 16.73   n/a E2021B55  

100879 (1998 HC91)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 HC91 = 1991 LU5 = 2000 YK14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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