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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1417215000486784 4.3331e-08  
a 2.603508458354886 1.4542e-08 au
q 2.234535334247409 1.1035e-07 au
i 6.16742780578886 4.9955e-06 deg
node 24.87763323644162 3.7112e-05 deg
peri 146.8150586910939 4.0354e-05 deg
M 161.8168480446887 1.6327e-05 deg
tp 2458510.803292020021
(2019-Jan-27.30329202)
6.7681e-05 TDB
period 1534.394087346347
4.20
1.2855e-05
3.52e-08
d
yr
n .2346202992886925 1.9657e-09 deg/d
Q 2.972481582462363 1.6603e-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 = 1.2421 au 
 Jupiter MOID = 1.99374 au 
 T_jup = 3.391 
[ show covariance matrix ]

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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