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11118 Modra (1996 PK)
Classification: Main-belt Asteroid          SPK-ID: 2011118
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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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.

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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08278196535454078 4.1398e-08  
a 2.313469851394711 9.1578e-09 au
q 2.121956270307779 9.631e-08 au
i 3.032806341673505 4.5467e-06 deg
node 7.470228920823804 8.136e-05 deg
peri 204.4921681303146 8.5714e-05 deg
M 27.48974564984211 2.6814e-05 deg
tp 2457502.356302886378
9.572e-05 JED
period 1285.269475059949
n .2800969034009063 1.6631e-09 deg/d
Q 2.504983432481642 9.9159e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1474  
   data-arc span      9163 days (25.09 yr)  
   first obs. used      1991-03-17  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4963  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:10:55  

Additional Information
 Earth MOID = 1.11608 au 
 Jupiter MOID = 2.46 au 
 T_jup = 3.576 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3 mag n/a MPO332924  
rotation period rot_per 27.12 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2011) Minor Planet Bul. 38, 82-86.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

11118 Modra           Discovered 1996 Aug. 9 by A. Galad and D. Kalmancok at Modra.
Fortuitously coded 118, the observing site of the Institute of Astronomy at Comenius University where this minor planet was discovered is located in the small historical town of Modra, 30 km northeast of Bratislava.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990928/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1996 PK = 1991 FL1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-Apr-30 16:56 UT
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