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192488 (1998 HK22)
Classification: Main-belt Asteroid          SPK-ID: 2192488
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1422981671833459 4.3359e-08  
a 2.602200793501338 1.4399e-08 au
q 2.231912389943049 1.1035e-07 au
i 6.16970610586704 4.9975e-06 deg
node 24.86384140253324 3.7096e-05 deg
peri 146.8219299510604 4.031e-05 deg
M 207.8332923994969 1.6402e-05 deg
tp 2460044.577251806186
(2023-Apr-10.07725181)
7.2188e-05 TDB
period 1533.238211756221
4.20
1.2726e-05
3.484e-08
d
yr
n .2347971745288323 1.9489e-09 deg/d
Q 2.972489197059626 1.6448e-08 au
  Orbit Determination Parameters
   # obs. used (total)      507  
   data-arc span      8213 days (22.49 yr)  
   first obs. used      1998-03-22  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:16:18  

Additional Information
 Earth MOID = 1.24069 au 
 Jupiter MOID = 1.99297 au 
 T_jup = 3.391 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457502.5 (2016-Apr-24.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1403140369847105 4.3233e-08  
q 2.238553515324607 1.098e-07 au
tp 2456973.423099988105
(2014-Nov-11.92309999)
6.5899e-05 TDB
node 25.0347036673724 3.7087e-05 deg
peri 146.2913135754966 4.0439e-05 deg
i 6.169104975829944 4.9963e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      507  
   data-arc span      8213 days (22.49 yr)  
   first obs. used      1998-03-22  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:16:18  

Additional Information
 Jupiter MOID = 1.99297 au 
 T_jup = 3.391 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.869108640835244E-15 -4.718890968967437E-15 7.748371319193213E-13 2.308831655658365E-15 1.717185829786829E-13 2.685074452135617E-15
q -4.718890968967437E-15 1.205679949805628E-14 -1.905728463659371E-12 -6.339596500250723E-15 -4.098792500168609E-13 -6.63447179218613E-15
tp 7.748371319193213E-13 -1.905728463659371E-12 4.3426630887896E-9 -1.818362887640535E-11 1.074497393875023E-9 1.700304457407878E-12
node 2.308831655658365E-15 -6.339596500250723E-15 -1.818362887640535E-11 1.375408503210051E-9 -1.371340031642167E-9 4.360468262413322E-12
peri 1.717185829786829E-13 -4.098792500168609E-13 1.074497393875023E-9 -1.371340031642167E-9 1.635338611760504E-9 -3.904464043892829E-12
i 2.685074452135617E-15 -6.63447179218613E-15 1.700304457407878E-12 4.360468262413322E-12 -3.904464043892829E-12 2.496309134992413E-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 15.99   n/a E2021B55  

192488 (1998 HK22)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

[ show close-approach data ]
Alternate Designations
 1998 HK22 = 2002 CG257 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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