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318 Magdalena
Classification: Main-belt Asteroid          SPK-ID: 2000318
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08511875939465598 3.4687e-08  
a 3.192984339938505 1.6187e-08 au
q 2.921201474156375 1.1083e-07 au
i 10.65727351827042 4.9908e-06 deg
node 161.509083938828 2.2348e-05 deg
peri 296.7372711492131 3.5475e-05 deg
M 158.5217193513735 2.7793e-05 deg
tp 2456682.844053922809
0.00015885 JED
period 2083.9803021284
n .1727463544796113 1.3136e-09 deg/d
Q 3.464767205720635 1.7564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1801  
   data-arc span      45496 days (124.56 yr)  
   first obs. used      1891-09-24  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52344  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:26:56  

Additional Information
 Earth MOID = 1.95573 au 
 Jupiter MOID = 1.68937 au 
 T_jup = 3.164 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.4 mag n/a MPO324305  
diameter diameter 85 km n/a J.G. Williams (E-mail September 1990) based on assumed albedo of 0.048 for C-type
rotation period rot_per 42.49 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pilcher, F.; Martinez, L. (2015) Minor Planet Bul. 42, 239.]
B-V BV .685 mag .037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=6.81 deg.
U-B UB .290 mag .078 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=6.81 deg.
Tholen spectral type spec_T CXF   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

318 Magdalena          Discovered 1891-Sep-24 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-Apr-29 08:04 UT
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