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48772 (1997 MR9)
Classification: Main-belt Asteroid          SPK-ID: 2048772
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1217685694711769 4.2584e-08  
a 2.742716167093573 1.2734e-08 au
q 2.40873954296112 1.1571e-07 au
i 12.08490953610676 4.9482e-06 deg
node 179.4455422574449 1.6231e-05 deg
peri 47.83664914453875 2.6435e-05 deg
M 80.98674224785302 1.8863e-05 deg
tp 2458627.266037700169
(2019-May-23.76603770)
8.6952e-05 TDB
period 1659.089163220432
4.54
1.1554e-05
3.163e-08
d
yr
n .2169865297059802 1.5112e-09 deg/d
Q 3.076692791226027 1.4285e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1069  
   data-arc span      9867 days (27.01 yr)  
   first obs. used      1993-09-16  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53368  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 18:01:59  

Additional Information
 Earth MOID = 1.41923 au 
 Jupiter MOID = 1.9325 au 
 T_jup = 3.306 
[ 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 14.8   n/a MPO299292  
diameter diameter 3.111 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.154   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

48772 (1997 MR9)          Discovered 1997-Jun-27 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1997 MR9 = 2000 AC194 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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