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JPL Small-Body Database Browser
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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1217685582801664 4.432e-08  
a 2.742716176295494 1.5518e-08 au
q 2.408739581736301 1.229e-07 au
i 12.08490674904959 5.1719e-06 deg
node 179.4455259585682 1.8632e-05 deg
peri 47.83665669811179 2.8751e-05 deg
M 80.98674672873419 1.9207e-05 deg
tp 2458627.266015171343
(2019-May-23.76601517)
8.8891e-05 TDB
period 1659.089171569896
4.54
1.4081e-05
3.855e-08
d
yr
n .2169865286139826 1.8416e-09 deg/d
Q 3.076692770854688 1.7408e-08 au
  Orbit Determination Parameters
   # obs. used (total)      927  
   data-arc span      9473 days (25.94 yr)  
   first obs. used      1993-09-16  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55119  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:13:18  

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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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
1917-Jan-22 16:53 00:02 Jupiter 1.9542315177706 1.95423079000862 1.95423224553657 3.53980954254806 3.41517080826794 2421251.203204492 2.22358634934271 182.05657130867 21.2700782263222 79.2519950719772 2547204.6088452 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 09:13:31 2020-Feb-23 09:13
1975-Nov-22 02:52 < 00:01 Jupiter 1.92466245625067 1.9246620070749 1.92466290542644 3.83913267008514 3.72273581235469 2442738.619783817 0.839617360462542 90.6435290354601 19.9008767545059 89.2714247534717 2661993.45658597 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 09:13:31 2020-Feb-23 09:13
2034-Sep-23 15:04 < 00:01 Jupiter 1.9696348182707 1.96963426762727 1.96963536891434 4.11793992229616 4.01215010105381 2464229.127567793 0.545846567833719 64.8211267923308 20.8241940970624 -77.1874392068463 2787995.30584066 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 09:13:31 2020-Feb-23 09:13
2130-Jun-16 17:33 00:03 Jupiter 1.94025108939735 1.94025050227406 1.94025167652582 3.55412710562527 3.42909804444789 2499193.231145408 2.76892837361807 243.399033452096 20.0527501252956 83.5293093063233 2434474.36026603 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 09:13:31 2020-Feb-23 09:13
2189-Apr-18 01:09 00:04 Jupiter 1.9352337011998 1.93523298156927 1.93523442084979 3.89702573986821 3.78304637457066 2520683.547941629 4.05872911518326 401.413590119824 19.7406980431548 -87.2650737475463 2620450.61061862 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 09:13:31 2020-Feb-23 09:13

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