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JPL Small-Body Database Browser
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48728 (1997 AM20)
Classification: Main-belt Asteroid          SPK-ID: 2048728
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0955937200968538 3.9305e-08  
a 2.324694042549159 1.1558e-08 au
q 2.102467890934891 9.4233e-08 au
i 4.878501535253537 4.9742e-06 deg
node 146.1623650534016 5.1914e-05 deg
peri 138.6399301540553 6.0048e-05 deg
M 312.0948594472176 2.8818e-05 deg
tp 2458772.776781177965
(2019-Oct-16.27678118)
0.00010328 TDB
period 1294.634365089351
3.54
9.6552e-06
2.643e-08
d
yr
n .2780707894890108 2.0738e-09 deg/d
Q 2.546920194163427 1.2663e-08 au
  Orbit Determination Parameters
   # obs. used (total)      946  
   data-arc span      8156 days (22.33 yr)  
   first obs. used      1997-01-11  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56298  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:39:09  

Additional Information
 Earth MOID = 1.08841 au 
 Jupiter MOID = 2.56713 au 
 T_jup = 3.564 
[ 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 15.5   n/a MPO385128  

48728 (1997 AM20)          Discovered 1997-Jan-11 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AM20 = 1999 XA248 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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