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4147 Lennon (1983 AY)
Classification: Main-belt Asteroid          SPK-ID: 2004147
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08107683221189471 3.0669e-08  
a 2.362621994757942 7.1384e-09 au
q 2.17106808770882 7.3507e-08 au
i 5.732770500449623 3.3611e-06 deg
node 288.5526758683741 3.5218e-05 deg
peri 303.4699287934642 4.2264e-05 deg
M 54.0083770009537 2.2492e-05 deg
tp 2459001.502135136319
(2020-Jun-01.00213514)
8.307e-05 TDB
period 1326.446661221832
3.63
6.0116e-06
1.646e-08
d
yr
n .2714017913606814 1.23e-09 deg/d
Q 2.554175901807063 7.7172e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2579  
   data-arc span      17830 days (48.82 yr)  
   first obs. used      1971-12-16  
   last obs. used      2020-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41586  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:54:03  

Additional Information
 Earth MOID = 1.16435 au 
 Jupiter MOID = 2.46102 au 
 T_jup = 3.539 
[ 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 13.07   n/a E2021B10  
diameter diameter 5.171 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 137. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Hasegawa, S.; Miyasaka, S.; Yoshizumi, C.; Sekiguchi, T.; et al. (2012) arXiv:1204.0548.]
geometric albedo albedo 0.240   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4147 Lennon (1983 AY)          Discovered 1983-Jan-12 by Skiff, B. A. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1983 AY = 1971 YG = 1980 KA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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