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52297 (1991 CH2)
Classification: Mars-crossing Asteroid          SPK-ID: 2052297
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3602729576700728 5.6197e-08  
a 2.58019809641447 1.6671e-08 au
q 1.650622496844537 1.5043e-07 au
i 27.877877623744 7.1576e-06 deg
node 315.2620982158574 1.3094e-05 deg
peri 284.917515944997 1.6212e-05 deg
M 350.893602895748 9.2707e-06 deg
tp 2459038.793237611991
(2020-Jul-08.29323761)
3.9039e-05 TDB
period 1513.83312000308
4.14
1.4672e-05
4.017e-08
d
yr
n .2378069255079236 2.3048e-09 deg/d
Q 3.509773695984402 2.2677e-08 au
  Orbit Determination Parameters
   # obs. used (total)      654  
   data-arc span      10716 days (29.34 yr)  
   first obs. used      1991-02-12  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51707  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 22:03:33  

Additional Information
 Earth MOID = .823207 au 
 Jupiter MOID = 2.34343 au 
 T_jup = 3.178 
[ 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 14.5   n/a MPO432080  

52297 (1991 CH2)          Discovered 1991-Feb-12 by McNaught, R. H. at Siding Spring
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 CH2 = 1999 CW10 = 2000 SZ271 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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