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5494 Johanmohr (1933 UM1)
Classification: Main-belt Asteroid          SPK-ID: 2005494
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.

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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .079533162962584 5.0195e-08  
a 2.850321721424248 2.3068e-08 AU
q 2.62362661945842 1.4765e-07 AU
i 1.144520404744965 5.6169e-06 deg
node 322.9994788698715 0.00023503 deg
peri 59.26208440276813 0.00023781 deg
M 308.5089281292559 3.7392e-05 deg
tp 2457251.901973314660
0.00018392 JED
period 1757.677731402988
n .2048157028835121 2.4864e-09 deg/d
Q 3.077016823390076 2.4903e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1277  
   data-arc span      29559 days (80.93 yr)  
   first obs. used      1933-10-19  
   last obs. used      2014-09-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46275  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:59:07  

Additional Information
 Earth MOID = 1.62653 AU 
 T_jup = 3.301 
[ 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 12.6 mag n/a MPO265987  

5494 Johanmohr           Discovered 1933 Oct. 19 by K. Reinmuth at Heidelberg.
German-Dutch astronomer Johan Maurits Mohr (1716-1775) made several successful meteorological and astronomical observations from his private observatory on the Molenvliet, Batavia, Dutch East Indies. The observations included some of the transits of Venus in 1761 and 1769.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070926/MPCPages.arcLast Updated: 2007-09-30

Alternate Designations
 1933 UM1 = 1971 QD = 1986 TV10 = 1990 HK2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2015-Mar-27 05:16 UT
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