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43989 (1997 LG4)
Classification: Main-belt Asteroid          SPK-ID: 2043989
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1492985757065854 5.5605e-08  
a 2.892588508965465 2.2877e-08 au
q 2.460729164471686 1.5375e-07 au
i 15.97994343747851 4.9067e-06 deg
node 151.5282761683806 1.6706e-05 deg
peri 189.3362177170688 2.5839e-05 deg
M 207.8555274615567 2.4587e-05 deg
tp 2459959.920103922080
(2023-Jan-15.42010392)
0.00012729 TDB
period 1796.918631683247
4.92
2.1318e-05
5.837e-08
d
yr
n .2003429613631271 2.3768e-09 deg/d
Q 3.324447853459245 2.6293e-08 au
  Orbit Determination Parameters
   # obs. used (total)      895  
   data-arc span      19202 days (52.57 yr)  
   first obs. used      1968-08-23  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53105  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:28:12  

Additional Information
 Earth MOID = 1.45102 au 
 Jupiter MOID = 2.07642 au 
 T_jup = 3.216 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.53   n/a E2021B10  
diameter diameter 6.126 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43989 (1997 LG4)          Discovered 1997-Jun-09 by Williams, K. A. at Lake Clear
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 LG4 = 1968 QY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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