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42531 McKenna (1995 LJ)
Classification: Mars-crossing Asteroid          SPK-ID: 2042531
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3262008265040193 4.9903e-08  
a 2.309432655528556 5.5689e-09 au
q 1.556093814539769 1.1511e-07 au
i 7.080546270859223 5.5477e-06 deg
node 315.7532281001642 3.1993e-05 deg
peri 344.2744575408519 3.2679e-05 deg
M 92.55003473521342 7.7971e-06 deg
tp 2458870.943056810770
(2020-Jan-22.44305681)
2.6943e-05 TDB
period 1281.906591256874
3.51
4.6367e-06
1.269e-08
d
yr
n .2808316943335394 1.0158e-09 deg/d
Q 3.062771496517344 7.3855e-09 au
  Orbit Determination Parameters
   # obs. used (total)      613  
   data-arc span      22053 days (60.38 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54744  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:09:28  

Additional Information
 Earth MOID = .540133 au 
 Jupiter MOID = 2.19265 au 
 T_jup = 3.503 
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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 16.1   n/a MPO474288  

42531 McKenna           Discovered 1995 June 5 by D. J. Asher at Siding Spring.
Martin McKenna (b. 1978) was named 2005 Astronomer of the Year by the Irish Federation of Astronomical Societies. An avid visual comet hunter and all-round observer, he also undertakes a photographic search for novae. The name was suggested by J. C. McConnell.
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

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Alternate Designations
 1995 LJ = 1988 PP1 = 1988 QF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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