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100875 (1998 HW84)
Classification: Main-belt Asteroid          SPK-ID: 2100875
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .119600226537346 3.8105e-08  
a 2.361442936818676 1.195e-08 au
q 2.079013826620146 8.9818e-08 au
i 5.166867382574849 4.0596e-06 deg
node 64.72777132591393 5.2309e-05 deg
peri 175.6613492571397 5.5871e-05 deg
M 11.89192703767155 2.1026e-05 deg
tp 2458956.716109870874
(2020-Apr-17.21610987)
7.7341e-05 TDB
period 1325.453847518028
3.63
1.0061e-05
2.755e-08
d
yr
n .2716050812890363 2.0616e-09 deg/d
Q 2.643872047017205 1.3379e-08 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      8115 days (22.22 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57615  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:03:47  

Additional Information
 Earth MOID = 1.06647 au 
 Jupiter MOID = 2.35813 au 
 T_jup = 3.536 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456930.5 (2014-Sep-30.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1201214867518926 3.8037e-08  
q 2.077061608180137 8.9712e-08 au
tp 2456305.708795835377
(2013-Jan-13.20879584)
7.4838e-05 TDB
node 64.77817191785013 5.2301e-05 deg
peri 175.4720233483227 5.5829e-05 deg
i 5.167892671983422 4.0597e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      8115 days (22.22 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57615  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:03:47  

Additional Information
 Jupiter MOID = 2.35813 au 
 T_jup = 3.536 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.446807668115721E-15 -3.388576228870646E-15 -1.119601685020056E-12 -3.560356996652596E-15 -2.741440620809781E-13 -5.944277363769092E-16
q -3.388576228870646E-15 8.048169242316243E-15 2.618314086668441E-12 8.851273349183503E-15 6.525844911778631E-13 1.496599660658936E-15
tp -1.119601685020056E-12 2.618314086668441E-12 5.60071405531158E-9 3.017612312506362E-12 1.484779899598972E-9 1.640508161528376E-12
node -3.560356996652596E-15 8.851273349183503E-15 3.017612312506362E-12 2.735355927244205E-9 -2.723242458137163E-9 -6.539792605772493E-11
peri -2.741440620809781E-13 6.525844911778631E-13 1.484779899598972E-9 -2.723242458137163E-9 3.116931301325804E-9 6.559627480457289E-11
i -5.944277363769092E-16 1.496599660658936E-15 1.640508161528376E-12 -6.539792605772493E-11 6.559627480457289E-11 1.648101163888441E-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 15.9   n/a MPO426633  

100875 (1998 HW84)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 HW84 = 2003 VW5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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