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36061 Haldane (1999 RJ44)
Classification: Outer Main-belt Asteroid          SPK-ID: 2036061
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

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 two-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 is not working, here are some notes that might help.
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06179943858895564 4.0555e-08  
a 3.255034701065084 2.0609e-08 au
q 3.053875383951692 1.3351e-07 au
i 3.512195175005668 4.0054e-06 deg
node 108.5490110440486 8.3432e-05 deg
peri 29.65159592397868 9.4113e-05 deg
M 67.92971451168287 4.1522e-05 deg
tp 2458595.747863633603
0.00024786 TDB
period 2145.022544837032
n .1678304038652195 1.5939e-09 deg/d
Q 3.456194018178474 2.1882e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1080  
   data-arc span      10552 days (28.89 yr)  
   first obs. used      1991-06-07  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50445  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:11:27  

Additional Information
 Earth MOID = 2.06803 au 
 Jupiter MOID = 1.55421 au 
 T_jup = 3.174 
[ 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 14.1   n/a MPO319524  
rotation period rot_per 8.47 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]

36061 Haldane           Discovered 1999 Sept. 11 by M. M. M. Santangelo at Monte Agliale.
British biologist and philosopher of science John Burton Sanderson Haldane (1892-1964) worked on the role of natural selection in biological evolution. He also studied the role of size of organisms, stating "Haldane's principle" (in his 1928 essay On being the right size) and wrote on the subject of biostatistics.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060413/MPCPages.arcLast Updated: 2006-04-17

[ show close-approach data ]
Alternate Designations
 1999 RJ44 = 1998 MO 
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