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192422 (1997 SH21)
Classification: Main-belt Asteroid          SPK-ID: 2192422
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1687752036129012 5.1026e-08  
a 2.410225683794644 1.0644e-08 au
q 2.003439353259159 1.2037e-07 au
i .800848687307364 7.98e-06 deg
node 290.2989371563662 0.00042448 deg
peri 146.1866947288306 0.00042564 deg
M 83.60126894412618 2.9279e-05 deg
tp 2459079.108449710177
(2020-Aug-17.60844971)
0.00011045 TDB
period 1366.737126690042
3.74
9.0538e-06
2.479e-08
d
yr
n .2634010542113878 1.7449e-09 deg/d
Q 2.817012014330128 1.2441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      203  
   data-arc span      8557 days (23.43 yr)  
   first obs. used      1997-09-29  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58484  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:16:02  

Additional Information
 Earth MOID = 1.01864 au 
 Jupiter MOID = 2.43266 au 
 T_jup = 3.500 
[ 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 17.59   n/a MPCxxxxx  

192422 (1997 SH21)          Discovered 1997-Sep-29 by Spacewatch at Kitt Peak
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2116-Jan-21 01:06 00:03 Iris 0.0173736623753216 0.0173572519040294 0.0173900820002771 2.78533342259396 2.78533330379723 2493932.545716984 2.96916387788493 1033.84795165015 95.4364214124875 37.9150383497042 16832.1550392462 T 10 CATAB v2.0f-lin.ifort 2021-Apr-13 22:16:03 2021-Apr-13 22:16

Alternate Designations
 1997 SH21 = 2001 XE216 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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