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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457610.5 (2016-Aug-10.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1963625910228906 2.9012e-08  
q 1.876791395248369 6.5695e-08 au
tp 2457459.115022806599
(2016-Mar-11.61502281)
3.8236e-05 TDB
node 120.1450934127917 4.9175e-05 deg
peri 98.29291421575074 5.0271e-05 deg
i 3.755912912271301 3.9583e-06 deg
  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
 Jupiter MOID = 2.18173 au 
 T_jup = 3.539 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.417150523363181E-16 -1.894371685000741E-15 5.480012531054282E-14 -4.55641653244916E-15 1.037081152940256E-14 -4.601501731626023E-17
q -1.894371685000741E-15 4.315791018824985E-15 -4.054920456323821E-14 1.046368112581603E-14 -2.532274941714098E-16 1.367265762353438E-16
tp 5.480012531054282E-14 -4.054920456323821E-14 1.461995814471994E-9 -5.33874427033486E-14 4.074296857236958E-10 -1.051732941554425E-12
node -4.55641653244916E-15 1.046368112581603E-14 -5.33874427033486E-14 2.418142796393877E-9 -2.412648156923151E-9 3.109397674962425E-11
peri 1.037081152940256E-14 -2.532274941714098E-16 4.074296857236958E-10 -2.412648156923151E-9 2.527191609185845E-9 -3.130323931044424E-11
i -4.601501731626023E-17 1.367265762353438E-16 -1.051732941554425E-12 3.109397674962425E-11 -3.130323931044424E-11 1.566801898855087E-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 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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