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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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1217685593599547 4.4189e-08  
a 2.742716175356515 1.5397e-08 au
q 2.408739577950107 1.2241e-07 au
i 12.08490707526927 5.1539e-06 deg
node 179.4455273411997 1.8571e-05 deg
peri 47.83665608374044 2.8691e-05 deg
M 80.98674638414622 1.9201e-05 deg
tp 2458627.266016951071
(2019-May-23.76601695)
8.8857e-05 TDB
period 1659.089170717903
4.54
1.3971e-05
3.825e-08
d
yr
n .2169865287254119 1.8272e-09 deg/d
Q 3.076692772762923 1.7272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      940  
   data-arc span      9763 days (26.73 yr)  
   first obs. used      1993-09-16  
   last obs. used      2020-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54979  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:50:00  

Additional Information
 Earth MOID = 1.41923 au 
 Jupiter MOID = 1.9325 au 
 T_jup = 3.306 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456441.5 (2013-May-29.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1202083188942444 4.4605e-08  
q 2.414996591775382 1.2289e-07 au
tp 2456966.026539133131
(2014-Nov-04.52653913)
9.2915e-05 TDB
node 179.5870705160877 1.858e-05 deg
peri 47.25847572902261 2.8837e-05 deg
i 12.07699592326059 5.1518e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      940  
   data-arc span      9763 days (26.73 yr)  
   first obs. used      1993-09-16  
   last obs. used      2020-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54979  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:50:00  

Additional Information
 Jupiter MOID = 1.9325 au 
 T_jup = 3.306 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.989632316290893E-15 -5.449157394023296E-15 -1.523442624578063E-12 1.344635111387922E-14 -4.137776915917882E-13 -3.774099950731695E-15
q -5.449157394023296E-15 1.510158231267177E-14 3.816185644250759E-12 -3.625899654001885E-14 1.039233534920344E-12 1.089153947377226E-14
tp -1.523442624578063E-12 3.816185644250759E-12 8.633151774130787E-9 -2.602660386141568E-11 2.057427237760192E-9 -6.558191588916118E-12
node 1.344635111387922E-14 -3.625899654001885E-14 -2.602660386141568E-11 3.452073527338785E-10 -3.435374326458288E-10 3.482669920500474E-12
peri -4.137776915917882E-13 1.039233534920344E-12 2.057427237760192E-9 -3.435374326458288E-10 8.315659604213921E-10 -4.671031096234393E-12
i -3.774099950731695E-15 1.089153947377226E-14 -6.558191588916118E-12 3.482669920500474E-12 -4.671031096234393E-12 2.654127804485839E-11

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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