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43990 (1997 LN4)
Classification: Main-belt Asteroid          SPK-ID: 2043990
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .147512390348884 4.1047e-08  
a 2.662792778564209 1.2063e-08 au
q 2.269997850794456 1.1179e-07 au
i 4.083800164717905 4.6895e-06 deg
node 175.2251816957587 4.4429e-05 deg
peri 12.13983096229007 4.6128e-05 deg
M 190.7416535458493 1.4533e-05 deg
tp 2459946.694554914340
(2023-Jan-02.19455491)
6.7233e-05 TDB
period 1587.100697819529
4.35
1.0785e-05
2.953e-08
d
yr
n .2268287075259896 1.5413e-09 deg/d
Q 3.055587706333962 1.3842e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1033  
   data-arc span      9602 days (26.29 yr)  
   first obs. used      1994-09-28  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57911  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:24:53  

Additional Information
 Earth MOID = 1.27086 au 
 Jupiter MOID = 1.89891 au 
 T_jup = 3.366 
[ 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 14.96   n/a MPCxxxxx  
diameter diameter 5.787 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43990 (1997 LN4)          Discovered 1997-Jun-07 by Spacewatch at Kitt Peak
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 LN4 = 1994 SA7 = 1997 JV17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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