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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .153709533704526 3.6675e-08  
a 2.275989124962053 9.9679e-09 au
q 1.926147897847563 8.2496e-08 au
i 7.118941497344531 4.3678e-06 deg
node 89.96172251611823 3.2333e-05 deg
peri 161.7484857453756 3.5302e-05 deg
M 190.7255758564319 1.5673e-05 deg
tp 2459790.215502960230
(2022-Jul-29.71550296)
5.648e-05 TDB
period 1254.162181556886
3.43
8.239e-06
2.256e-08
d
yr
n .2870442158868999 1.8857e-09 deg/d
Q 2.625830352076542 1.15e-08 au
  Orbit Determination Parameters
   # obs. used (total)      568  
   data-arc span      8297 days (22.72 yr)  
   first obs. used      1998-04-23  
   last obs. used      2021-01-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60111  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:28  

Additional Information
 Earth MOID = .911351 au 
 Jupiter MOID = 2.41456 au 
 T_jup = 3.583 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457204.5 (2015-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .153490554551612 3.6676e-08  
q 1.926433063880591 8.248e-08 au
tp 2457282.350317088774
(2015-Sep-16.85031709)
5.0219e-05 TDB
node 89.97450256366538 3.2345e-05 deg
peri 161.8164971892041 3.532e-05 deg
i 7.11797882798582 4.3668e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      568  
   data-arc span      8297 days (22.72 yr)  
   first obs. used      1998-04-23  
   last obs. used      2021-01-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60111  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:28  

Additional Information
 Jupiter MOID = 2.41456 au 
 T_jup = 3.583 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.345143740418019E-15 -3.009524895898565E-15 1.832294253075008E-13 6.705887702121922E-15 5.929443450183497E-14 -7.265531621695818E-16
q -3.009524895898565E-15 6.802889542811739E-15 -3.142323959194992E-13 -1.421034638787265E-14 -1.091402363043071E-13 1.98384405542739E-15
tp 1.832294253075008E-13 -3.142323959194992E-13 2.52194226747727E-9 8.409763384896988E-12 7.251339736748383E-10 3.437349853229197E-12
node 6.705887702121922E-15 -1.421034638787265E-14 8.409763384896988E-12 1.046187062727759E-9 -1.035293305840053E-9 6.144990333558771E-12
peri 5.929443450183497E-14 -1.091402363043071E-13 7.251339736748383E-10 -1.035293305840053E-9 1.24751333202116E-9 -5.130031369973241E-12
i -7.265531621695818E-16 1.98384405542739E-15 3.437349853229197E-12 6.144990333558771E-12 -5.130031369973241E-12 1.906906988063239E-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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