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43780 (1989 SL8)
Classification: Main-belt Asteroid          SPK-ID: 2043780
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1886564364360303 4.5163e-08  
a 2.272616054037536 6.2935e-09 au
q 1.843872407895501 1.011e-07 au
i 4.101864743921571 4.5038e-06 deg
node 5.104356444226732 4.0004e-05 deg
peri 359.36121491 4.0768e-05 deg
M 33.96292828790668 7.3712e-06 deg
tp 2459082.443430415310
(2020-Aug-20.94343042)
2.558e-05 TDB
period 1251.375166776231
3.43
5.1981e-06
1.423e-08
d
yr
n .287683509756251 1.195e-09 deg/d
Q 2.70135970017957 7.4808e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1490  
   data-arc span      11472 days (31.41 yr)  
   first obs. used      1989-09-09  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47405  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:22:21  

Additional Information
 Earth MOID = .840242 au 
 Jupiter MOID = 2.75719 au 
 T_jup = 3.584 
[ 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 15.49   n/a E2021B10  
diameter diameter 4.644 km 1.253 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.068   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

43780 (1989 SL8)          Discovered 1989-Sep-23 by Debehogne, H. at La Silla
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 SL8 = 2002 LM22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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