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100890 (1998 HS122)
Classification: Main-belt Asteroid          SPK-ID: 2100890
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1539065886348278 4.7927e-08  
a 2.27557073282465 1.3715e-08 au
q 1.925345404138352 1.1307e-07 au
i 7.119321717710752 4.7555e-06 deg
node 89.95996011266287 3.9506e-05 deg
peri 161.7271553009235 4.2875e-05 deg
M 133.3326773681389 1.9808e-05 deg
tp 2458536.125850932032
(2019-Feb-21.62585093)
6.6618e-05 TDB
period 1253.81637093276
3.43
1.1335e-05
3.103e-08
d
yr
n .2871233845289344 2.5958e-09 deg/d
Q 2.625796061510947 1.5826e-08 au
  Orbit Determination Parameters
   # obs. used (total)      455  
   data-arc span      7247 days (19.84 yr)  
   first obs. used      1998-04-23  
   last obs. used      2018-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64854  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Mar-05 23:46:44  

Additional Information
 Earth MOID = .91217 au 
 Jupiter MOID = 2.41564 au 
 T_jup = 3.583 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456690.5 (2014-Feb-02.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .154225645915922 4.804e-08  
q 1.925078967974721 1.1344e-07 au
tp 2457281.330212156013
(2015-Sep-15.83021216)
6.1006e-05 TDB
node 89.99834082945712 3.9474e-05 deg
peri 161.5787355616274 4.2817e-05 deg
i 7.121907108237282 4.7576e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      455  
   data-arc span      7247 days (19.84 yr)  
   first obs. used      1998-04-23  
   last obs. used      2018-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64854  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Mar-05 23:46:44  

Additional Information
 Jupiter MOID = 2.41564 au 
 T_jup = 3.583 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.307807847751559E-15 -5.423360275299511E-15 -7.134609388824869E-13 1.762877691244044E-14 -1.161786007195055E-13 -3.636383356899398E-15
q -5.423360275299511E-15 1.286915248285036E-14 1.919808588106349E-12 -4.060278362950838E-14 3.222429689627225E-13 9.383069304739263E-15
tp -7.134609388824869E-13 1.919808588106349E-12 3.721746800529311E-9 -9.94968075193678E-12 1.024000569376954E-9 8.870244365462999E-12
node 1.762877691244044E-14 -4.060278362950838E-14 -9.94968075193678E-12 1.558207177330825E-9 -1.547633886046491E-9 -1.560646547943724E-11
peri -1.161786007195055E-13 3.222429689627225E-13 1.024000569376954E-9 -1.547633886046491E-9 1.833288370931583E-9 1.774832697793188E-11
i -3.636383356899398E-15 9.383069304739263E-15 8.870244365462999E-12 -1.560646547943724E-11 1.774832697793188E-11 2.263500047658834E-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 16.2   n/a MPO280443  

100890 (1998 HS122)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 HS122 = 2001 DZ100 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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